The resistance level of rice varieties to rice blast is determined as follows: the lower the level, the higher the resistance; Conversely, the higher the level, the lower the resistance. Details are as follows:
Resistance level of disease level
High resistance (HR ), 0 leaves without disease spots.
The lesion of 1 is a needle-sized brown spot antibody (R)
The brown spots are a little bigger.
3 round to oval gray lesions with brown edges and a diameter of 1-2mm (MR).
4. The spindle lesion, which is 1-2cm long, is usually confined between two veins, and the lesion area does not exceed 2% of the leaf area (MS).
Spindle lesions, the lesion area does not exceed 65438 00% of the leaf area.
6. Spindle lesions, the lesion area does not exceed 1 1-25% of the leaf area.
7. Spindle lesions, the lesion area does not exceed 26-50% of the leaf area.
8. Spindle lesions, the lesion area does not exceed 0-75% of the leaf area (HS).
9 All leaves are dead and highly sensitive.
The comprehensive index of rice blast is 5.0-9.0, and the highest loss rate of ear blast is 9. What do you mean?
The rice blast comprehensive index of 5.5 is the disease resistance index, and there are 6.0. Generally, the lower the better, the stronger the disease resistance ~
The higher the loss rate of ear explosion, the same reason!
What rice varieties are resistant to rice blast?
The resistance level of rice varieties to rice blast is determined as follows: the lower the level, the higher the resistance; Conversely, the higher the level, the lower the resistance. The details are as follows: the disease level is 0. There are no diseased spots on the leaves. High resistance (HR) 1. The lesion is needle-sized brown spot resistance (R) 2. Brown spots are slightly larger. The edge is brown. The diameter of the lesion was 1-2mm. The length of the lesion is 1-2cm, usually limited to two. The affected area shall not exceed 2% of the leaf area, 10% of the leaf area, 1 1-25% of the leaf area and 26-50% of the leaf area. The damaged area shall not exceed 5 1-75% of the leaf area. High sensitivity (HS) 9 All leaves are dead. A highly sensitive rice variety tested in China: 5 You 360. A new national experimental rice variety: Jin 7 You 18. A new national experimental rice variety: Xu 68 You 20 1. Su Xiu 9, a new national experimental rice variety. New Rice Variety: Jinyuan D 1 National Trial Rice Variety: Jin 9 You 78 National Trial Rice Variety: Xinhanyou 26 National Trial Rice Variety: Jiaohan 1 National Trial Rice Variety-Ⅱ You 264 High-yield and Good-quality Rape Hybrid Mianyou1Super Rape Vivi) Japonica New Black Glutinous Rice Variety ". Kloc-0/4 A New Aromatic Rice Variety with Good Quality —— Introduction of Zhong Jian No.2 Medium Indica Zhejiang 1500 Rice Variety —— Introduction of Early Indica Jiayu 280 Rice Variety —— Introduction of Late Nuoshaonuo 6544 2-34 Rice Variety —— Late Indica Hybrid Rice —— "Zhongzheyou 1" New Rice Variety ——— Jin
Introduction of early rice varieties
T you 15 (national trial rice 2007005) has an average whole growth period of 109.9 days. The plant height is 9 1.7 cm, the effective panicle per 667 square meters is 228,000, the panicle length is 2 1.4 cm, the total grains per panicle 120.6, the seed setting rate is 77.5%, and the 1000-grain weight is 24.4 grams. The regional trial production in 2005 and 2006 was 486.28 kg per 667 square meters. Trial production in 2006, the output per 667 square meters was 42 1.24 kg. It is suitable for direct seeding in field, throwing seedlings in dry land and raising seedlings in conventional water, and the amount of seeds used per 667 square meters is 2 kg ~ 2.5 kg. This variety is late-maturing, with average rice quality, and is highly sensitive to rice blast and bacterial blight. Zhuliangyou 173 (Guodao 20 10004) average growth period 108 days. The plant height is 86.8cm, the effective panicle per 667m2 is 223,000, the panicle length19.4cm, the total grains per panicle 104.9, the seed setting rate is 84.5%, and the 1000-grain weight is 27.9g.. In 2008 and 2009, the output per 667 square meters was 5 10. 1 kg. Trial production in 2009, with an output of 477 kg per 667 square meters. Sow at the right time, and it is advisable to sow seedlings early in dry land, with a seed dosage of about 2 kg per 667 square meters. This variety is moderately mature, highly sensitive to rice blast, moderately sensitive to bacterial leaf blight, highly sensitive to brown salamander and white-backed salamander, and its rice quality is average. Lingliangyou 2 1 1 (Guodao 20 10003) Average growth period 109.8 days. The plant height is 79.8 cm, with an effective panicle of 234,000 per 667 square meters, panicle length 18.7 cm, total grains per panicle 105.8 grains, seed setting rate of 82.9% and 1000-grain weight of 26.3 grams. In 2008 and 2009, the regional trial output was 565,438+04 kg per 667 square meters. In the production test in 2009, the output per 667 square meters was 484. 1 kg. Sow in time and disinfect the seeds. The amount of seeds used in the field is 2 kg ~ 2.5 kg per 667 square meters. This variety is moderately mature, highly sensitive to rice blast, moderately sensitive to bacterial blight, highly sensitive to brown salamander and white-backed salamander, and has good rice quality. The whole growth period of Zhuliangyou 8 19 (Xiangshendao 20050 10) is about 106 days. The plant height is about 82 cm, and the effective panicle is 236,000 /667 m2. Total grains per panicle 109.6, seed setting rate of 79.8% and 1000-grain weight of 24.7 grams. In 2003 and 2004, the regional test produced 470.48 kilograms per 667 square meters. Sow dry seedlings on March 25th, and sow hydroponic seedlings at the end of March. The seed amount per 667 square meters is 2 kg ~ 2.5 kg, and the sowing amount in paddy field is 15kg. Insist on soaking seeds with strong chlorine essence, and timely apply pesticides to prevent and control pests such as Chilo suppressalis, rice leaf roller, rice planthopper and sheath blight. Jinyou 899 (Xiangshendao 2004007) is suitable for early rice planting in light rice blast areas in southern Hunan. The whole growth period is 1 13. 1 day. The plant height is about 90 cm, the effective panicle per 667 square meters is 224,000, the total number of grains per panicle is about 65,438 0.20, the panicle length is about 265438±0cm, the seed setting rate is about 80%, and the 1000-grain weight is 27 grams. The regional tests in 2006 and 2002 yielded 490.39 kilograms per 667 square meters. Sow in late March to early April. The amount of seeds used in 667 square meters field is 2 kg ~ 2.5 kg, the dry seedlings in rice field are 0. 10 kg, and the hydroponic seedlings are 0.03 kg per square meter. The whole growth period of Zhuliangyou 2008 (Xiangshendao 20 1 1007) is 1 13.6 days. The plant height is 94.6 cm, with an effective panicle of 220,000 per 667 square meters. The total grains per panicle 122.3, the seed setting rate was 79.7%, and the 1000-grain weight was 28.2 grams. Highly sensitive to rice blast. In 2009 and 20 10, the output per 667 square meters was 52 1 kg. Sowing from the end of March to the beginning of April, the amount of seeds per 667 square meters is 2.5 kg in the field and 0/5 kg in the seedling field/kloc, and the seedling age is controlled within 30 days. Pay attention to the prevention and control of rice blast, Chilo suppressalis and sheath blight. The whole growth period of Luliangyou 996 (Xiangshendao 2005008) is about 1 12 days. The plant height is about 95 cm, the effective panicle is 2 1 0,000 per 667 square meters, the total grains per panicle are 1 0,654,38+0.3, the seed setting rate is 85%, and the 1000-grain weight is 28 grams. In 2003 and 2004, the regional trial production was 507.48 kilograms per 667 square meters. Sowing in central Hunan on March 25th, the amount of seeds used per 667m2 field is 2-2.5kg, and the seedling age is controlled within 1 month. Pay attention to the timely prevention and control of rice blast, Chilo suppressalis, rice leaf roller and rice planthopper. The whole growth period of Lingliangyou 104 (Xiangshendao 201kloc-0/009) is 1 16 days. The plant height is 88.6 cm, and the effective panicle per 667 square meters is 228,000, with a total panicle number. ......
Can the crop varieties approved at the national level be popularized throughout the country?
Each variety has its own suitable planting area. Here is a rice variety approved by the state. It can be seen that there are recommended suitable planting areas in the review comments.
Ⅱ you 728
Ⅱ You 728 (Hongliangyou 166) test number: Guo 200608 1.
Breeding unit: Hefei Fenghai Marker Rice Research Institute of Jiangsu Zhongjiang Seed Industry Co., Ltd.
Parental source: Ⅱ-32a× Su Hui 728
Characteristics: This variety belongs to indica three-line hybrid rice. The average whole growth period of mid-season rice planting in the middle and lower reaches of the Yangtze River is 137.3 days, which is 2.8 days later than the control Shanyou 63. Moderate plant type, vigorous growth, stout stems, sword Ye Ting, effective panicle per mu 169000, plant height 122.8 cm, panicle length 24.0 cm, total grains per panicle1610.6, seed setting rate 79.8%, 1000-grain. Resistance: the average level of rice blast is 5.7, the highest level is 9, and the resistance frequency is 90%; Bacterial blight grade 5. Main indicators of rice quality: head rice rate 66.5%, length-width ratio 2.6, chalkiness 36%, chalkiness 6.4%, gel consistency 78 mm, amylose content 23.4%.
Yield performance: in 2004, I participated in the regional test of late-maturing medium indica rice group in the middle and lower reaches of the Yangtze River, with an average yield of 592.88 kg per mu, which was 5. 18% higher than Shanyou 63 (extremely significant); In 2005, the average yield per mu was 574.07 kg, which was 7.28% higher than that of Shanyou 63 (extremely significant). The average yield per mu in the two-year regional trial was 583.47 kg, which was 6.20% higher than that of the control Shanyou 63. In 2005, the average yield per mu was 529.48 kg, which was 4.63% higher than Shanyou 63.
Key points of cultivation techniques: 1. Seedling raising: Sow early in time according to the production season of mid-season indica rice in various places, the sowing amount per mu of rice field is 10 ~ 12 kg, and the seedling age is about 30 days. 2. Transplanting: planting 1.5 ~ 1.8 million holes in the upper-middle fertility field, with 2 rice seedlings per hole1~, and controlling the basic seedlings at about 50,000 plants per mu; Planting1.8 ~ 20,000 holes and 70,000 ~ 80,000 basic seedlings per mu in plots with poor fertility. 3. Fertilizer and water management: Generally, pure nitrogen 15 kg per mu is applied, and the method of "promoting before, controlling after and supplementing after" is adopted, with sufficient base fertilizer, increasing phosphorus and potassium fertilizer at the early tillering stage, controlling nitrogen fertilizer at the middle stage and appropriate panicle fertilizer at the later stage, with flower-keeping fertilizer as the main fertilizer. In the early stage of water management, shallow water irrigation can promote early development, and after enough seedlings, they should be put into the field as soon as possible to control growth and put them gently in stages; In the middle stage of panicle differentiation, water should be covered in time, dry and wet alternate in the later stage, and irrigation should be stopped about one week before harvest. 4. Pest control: Pay attention to timely control of pests such as rice blast, thrips oryzae, rice planthopper, Chilo suppressalis and rice leaf roller. Examination and approval opinion: This variety conforms to the national rice variety examination and approval standard and has passed the examination and approval. This variety has moderate maturity, high yield, moderate sensitivity to bacterial blight, high sensitivity to rice blast and average rice quality. It is suitable to be planted as one-season mid-season rice in the Yangtze River valley rice areas in Jiangxi, Hunan, Hubei, Anhui, Zhejiang, Jiangsu and other provinces (except Wuling Mountain area) and rice blast-prone areas in northern Fujian and southern Henan.
Source: Announcement of People's Republic of China (PRC) and Ministry of Agriculture (No.794).
Remarks: It was approved by the National Variety Approval Committee in 2006.
Characteristics of Y Liangyou 900
Indica two-line hybrid rice varieties. Mid-season rice was planted in the middle and lower reaches of the Yangtze River, with a total growth period of 140.7 days, which was 2.7 days higher than that of the control Fengliangyou 4. The plant height was 1 19.7 cm, the panicle length was 27.7 cm, the effective panicle per mu was149,000 panicles, and the total number of grains per panicle was 238.2. Bacterial blight grade 5; Brown flying salamander level 9; Medium heat resistance at heading stage; Highly susceptible to rice blast, moderately susceptible to bacterial blight, and highly susceptible to brown salamander. Main indicators of rice quality: head rice rate 68.65438 0%, length-width ratio 3.0, chalkiness rate 65438 02%, chalkiness degree 65438 0.4%, gel consistency 68 mm, amylose content 65438 04.7%.
Full growth period of hybrid rice Y Liangyou 483 _ Baidu Academic
Luliangyou 996, an indica two-line hybrid rice. This variety has moderate maturity, high yield, high sensitivity to bacterial blight and rice blast, and average rice quality. It is suitable for early rice planting in double-cropping rice areas with mild rice blast and bacterial blight in northern Fujian, Jiangxi, Hunan and central and southern Zhejiang.
Chinese name
Luliangyou 996
Approval number
National Shen Dao 20060 13
Breeding unit
Hu' nan agricultural university rice science institute
Parental source
Lu 18S×996
catalogue
Basic information of 1
2 Typical characteristics
3 Yield performance
4 key points of cultivation techniques
5 examination and approval opinions
1 basic information editing
Luliangyou 996
Examination number: National Examination Rice 20060 13
Breeding unit: Rice Research Institute of Hunan Agricultural University
Hu' nan yahua seed industry science study institute
Parental source: Lu 18S×996
2 feature feature editing
This variety belongs to indica two-line hybrid rice. The average growth period of early rice planting in the middle and lower reaches of the Yangtze River is 109.7 days, which is earlier than Zhaojinyou 40210.7 days. Moderate plant type, stout stems, effective panicle per mu196,000, plant height 95 1 cm, panicle length 20.0 cm, total grains per panicle 129.0, seed setting rate 82.0% and 1000-grain weight 27.5 g. Resistance: the average level of rice blast is 3.9, the highest level is 9, and the resistance frequency is 30%; Xanthomonas oryzae pv. oryzae. 7. Main indicators of rice quality: head rice rate is 42.3%, length-width ratio is 2.8, chalkiness grain rate is 9 1%, chalkiness1.1%,gel consistency is 55 mm, and amylose content is 24.2%.
3 Output Performance Editor
In 2004, he participated in the regional test of late-maturing early indica rice varieties in the middle and lower reaches of the Yangtze River, and the average yield per mu was 520.5 1 kg, which was 7. 17% higher than that of Zhaojinyou 402 (extremely significant). In 2005, the average yield per mu was 524.67 kg, which was 4.24% higher than that of Zhaojinyou 402 (extremely significant). The average yield per mu in the two-year regional trial was 522.59 kg, which was 5.70% higher than that of Zhaojinyou 402. In 2005, the average yield per mu was 557.60 kg, 7.34% higher than that of Zhaojinyou 402.
Four main points of editing cultivation techniques
1. Sowing: Sow in time according to the early rice production season. Generally, it should be sowed by water at the end of March, and sowed in dry land as soon as possible. The sowing amount per mu of paddy field is 8 kg, and the seed amount per mu of field is 2 ~ 2.5 kg. 2. Transplanting: Generally, 3. 1 ~ 4. 1 leaf is used for dry seedlings, and 4.5 leaves are transplanted for hydroponic seedlings (seedling age is 25 days). The planting density is 16.5 cm× 20 cm or the throwing planting density is 20,000 holes per mu. Plant two rice seedlings in each hole and plant (throw) basic seedlings per mu. 3. Fertilizer and water management: in general, the average medium fertility field should apply pure nitrogen 1 1 ~ 12 kg, 6 kg of phosphorus pentoxide and 6 ~ 7 kg of potassium oxide per mu. Apply sufficient base fertilizer, topdressing early and applying ear fertilizer skillfully. When raking the field, apply 50 kg of 25% special compound fertilizer for rice per mu, 7.5- 10 kg of urea per mu after 5-7 days of sowing, and 6-7 kg of potassium chloride per mu at booting stage. Dry-wet alternation promotes tillering at tillering stage, mainly wetting at booting stage, keeping the water layer on the field surface, keeping shallow water in the field at heading stage, and alternating dry-wet at filling stage to avoid premature water failure. 4. Pest control: insist on soaking seeds with strong chlorine to prevent the occurrence of seed-borne diseases such as bakanae disease, and timely control rice blast, bacterial leaf blight, sheath blight, stem borer, rice planthopper and other pests and diseases during the growth period.
When peanut leaf spot occurred, 22g of 12.5% diniconazole and 43% tebuconazole10g were sprayed. Does peanut have premature aging? Can you still add drugs to control growth?
Rice leaf roller is commonly known as "explosion" and "fire breathing". Rice blast is one of the three major diseases in rice production, which is widely distributed in different rice planting areas. Rice blast may occur in the whole growth period of rice. According to the different victims and parts of rice, it can be divided into seedling explosion, leaf explosion, node explosion, ear neck explosion and high yield, especially compared with high yield rice with large ear neck explosion. In recent years, because most rice varieties in cities do not have blast resistance, some high-quality rice, japonica rice and plateau rice varieties are prone to rice blast; In some areas, part of nitrogen, long-term deep irrigation, easy to bear children, urban rainfall, high temperature, is a good city with an upward trend of rice blast. The booting stage and heading stage of rice in the city are the key periods that are prone to ear neck blast. Coupled with frequent rainfall and suitable temperature, it is very conducive to being popular all over the world. Attention should be paid to the discovery and treatment, especially for rice fields with leaf blast, susceptible varieties or old wards where rice is planted, such as dark brown spots or gray-green mold layers, panicle neck branches, spikelets, etc., which should be sprayed immediately. Control methods: 75% triadimefon wettable powder 30g, 40% isoprothiolane EC 100ml, 30% tebuconazole (Tefuli) SC 10- 15ml, or 25% tebuconazole (Oning Tang Shuangning) wettable powder 30g can be sprayed at the ear breaking and full heading stages. 40 grams, 50 kilograms of water spray or polson boy.
Rice false smut, also known as green powder disease, is commonly known as "high yield fruit". In recent years, it is usually a common rice disease in the later stage, which mainly harms the panicle of rice. Dark green or yellow dough is more harmful to rice yield, pollution and personal health, not only affecting. This disease is a typical climatic disease. Even in the case of rainy weather in heading and flowering rice, the number of days above the second grade will be conducive to the long-term occurrence of rainy weather, and excessive nitrogen fertilizer or heavy peak fertilization will further aggravate the occurrence of diseases. Serious diseases will occur in continuous cropping land and japonica rice field, and the number of diseased ears will increase obviously after the disease. Early-maturing varieties have fewer diseases. According to the forecast of meteorological department, the rainfall in July and August in the city is more than normal, which is very beneficial to the onset of this disease. All localities should attach great importance to it, prevent and control its harm in advance. Prevention and control methods: In the critical period of the disease, spraying at the late booting stage (the intermission period is 3-5 days), the rest time in the middle period is about 50% of the rice breakthrough time, and then spraying again in the rainy weather at the heading stage, so the prevention and control efficiency at the full heading stage is very low. This chemical can use 150-200ml, 5% super jinggangmycin polymer, or 75ml of 20% triadimefon emulsifiable concentrate, or100-150g of 50% carbendazim wettable powder, or 30-40g of tebuconazole or/kloc. Spraying 20-30g diniconazole and 50kg water.
Rice sheath blight is a common disease. In rice planting, it is very beneficial to reduce leaf sheath and leaf tissue necrosis, make plants vulnerable to the growth of bad factories, increase the empty chaff rate, and directly affect the high temperature, high humidity, development and harm of rice production. In recent years, the incidence area in cities has expanded and the degree of harm has increased year by year, but farmers are often ignored. According to the recent survey, the average disease aggregation rate in Gushi county is 1 1.2%, 8.2%, 23.6%, 14.7% respectively. The average disease field rate, disease cluster rate and plant rate in Huangchuan County were 65438 05.6%, 2.43% and 2.65438 0% respectively. In Guangshan County, the average disease aggregation rate was 2 1.2%, the highest was 37%, and the average disease plant rate was 9.56%, the highest was 13. 1%. The average rate of diseased fields in Pingqiao District is 30%, the rate of diseased plants is 7.39%, and the serious plots are as high as 22.4%, 12.5%? The average rate of diseased plants in Luoshan was as high as 15.5438+0%. The epidemic peak of sheath blight occurred. In recent years, due to the repeated occurrence of sheath blight in cities, a large number of bacterial sources appeared on the scene. Long-term deep-water irrigation, partial application of nitrogen fertilizer in some areas obscured the growth of rice, and light green was combined with light green. If rice varieties with suitable rainfall have strong resistance to sheath blight, it is easy to cause the epidemic harm of sheath blight. All localities should strengthen propaganda and guidance, actively mobilize farmers to carry out prevention, especially super rice, and pay close attention to prevention and control to prevent lodging in the later period. about
Prevention index: 10%- 15% clustering incidence.
Chemical control: 50g of 25% triadimefon wettable powder or150g of 5% jinggangmycin or 30% of 25% wettable powder (tebuconazole) per mu? 40 grams or 25-50 grams of Zhixing, or 30% off (tebuconazole) SC 10? 15 ......