The flower of this kind of rose is relatively large, and its flower color will change with the change of environmental conditions, which is due to its hybrid variety.
Youlai
Youlai's plant is very small, and the whole flower is particularly beautiful, and it has strong resistance to pests and diseases.
Pink attraction
Pink attraction is a hybrid. If planted in the ground, it is very resistant to disease and will hardly get sick. The most noteworthy is its flowering period, which can be seen almost all year round.
Cauliflower pest control 1. The main diseases of cauliflower are black shank, black rot and downy mildew. Black shank disease is a disease in seedling stage. Seed was dressed with 50% thiram wettable powder, and the dosage was 0.4% of the seed weight. At the initial stage of the disease, 60% thiram wettable powder can be sprayed 600 times, every 9 days 1 time, and 1-2 times can be prevented. Black rot is a bacterial disease, which can be controlled initially with 72% streptomycin 3000 times solution or potassium permanganate 3000-4000 times solution. Downy mildew can be prevented and treated with 75% chlorothalonil 600 times solution or 70% boron-manganese wettable powder 500 times solution, every 5-7 days/kloc-0 times, for 2-3 times continuously.
2. Pests The main pests of cauliflower reproduction are aphids, diamondback moths and Pieris rapae. Plutella xylostella can be controlled by avermectin, and the other two pests can be controlled by conventional chemicals.
Yunyan 97 pest control Let me tell you:
The common pests of chrysanthemum are aphids, tetranychus urticae, red spider, red spider and so on. These pests will cause the stem tips of plants to curl, the leaves wither and shrink, and the flowers become smaller. Once it happens, it should be prevented in time.
1. Chrysanthemum aphid: 1 Symptom: Chrysanthemum is most seriously damaged by aphids, which occurs from seedling stage to flowering stage. Coriolus versicolor is the most common and widely distributed, with a body length of 65,438+05 ~ 65,438+07 mm, dark brown or grayish brown, which harms young stems and leaves, secretes mucus, binds stems and leaves, curls stem tips and shrinks leaves. Aphids occur within 1 year 10 ~ 20 generations, and the peak of reproduction is April ~ May and September ~1October every year. Control: In order to prevent aphids, carbofuran was applied from the soil rhizosphere. The method is as follows: firstly, the topsoil around the rhizosphere of chrysanthemum plants is planed flat, then 3% carbofuran particles are evenly buried around, 20 ~ 30 cm away from the trunk, and then covered with soil and watered. After dissolving in water, the particles were absorbed by the roots of chrysanthemum and conducted to the upper part of the plant, and aphids died after sucking. Generally, the efficacy lasts for at least 2 months, which can effectively control aphids. 2. After the chrysanthemum seedlings are planted or grafted, spray a mixture of 800 times carbendazim solution and 40% omethoate solution 1 time every 20 days.
Second, Tetranychus urticae: 1 Symptoms: Tetranychus urticae harms chrysanthemum most obviously, and it is mainly spread by wind or with water. It is mostly parasitic on the back of leaves, with tiny body and many peripheral branches, and the back of damaged leaves is grayish brown. It usually spreads upward from the lower leaves. When the new buds grow, mites migrate upward to the new leaves and buds, causing the branches and leaves to turn yellow. When the damage is serious, the leaves of the whole plant turn yellow, the growth is slow, the flowers become smaller and the flowering period is shortened, which affects the ornamental value. Control: (1) Avoid cutting with mites. (2) The affected chrysanthemum plants can be sprayed with 0.2% urea to promote the vegetative growth. (3) Regular inspection shows that mites are sprayed with chemicals in time to prevent and control them. Common pesticides are 20% dicofol EC 1000 times solution, 35% dicofol EC 2000 times solution and 80% dichlorvos EC 1000 times solution. Acaricide and organophosphorus are used alternately to avoid making mites resistant.
Third, pink cockroaches: the body length is about 0.6 mm, and the body color is mostly light or white. Breeding fast, many groups live on the back of young leaves, sucking juice, and chrysanthemums are harmed by acaroid mites, resulting in yellowing and falling off leaves. Huang Juhua was seriously affected by the disaster, which affected flowering and appreciation. 40% omethoate 1, 500 ~ 2000 times solution or 20% metronidazole 2000 times solution were used at onset.
4. Stem borer: Also known as Apriona germari, spraying 1 000 times of acaricide every month from late May to early July to prevent stem borer from harming chrysanthemum seedlings.
5. Carnivorous insects: From mid-August to late September, spray the killing liquid on the tender top 2-3 times to prevent moths from harming flower buds.
6. Leaf miner: it is mainly harmful to leaves, and can be sprayed with 40% dimethoate EC 1000 times, 40% omethoate EC 1000 ~ 2000 times, 50% dichlorvos EC 800 times, 50% Nale EC 1500 times and 40 times.
Seven, short-fronted negative locust: 20% metronidazole EC 2000 times solution spray killing, you can also choose diphacinone, permethrin and so on.
I know, so you know!
Pest control of Eupatorium adenophorum
Once brown spot occurs, the leaves can be picked and burned, and then sprayed with 0.2% bactericide or zineb.
Pay attention to increase soil acidity, reduce direct sunlight, pay attention to shading, and apply fertilizer too hard.
If root rot is found early, the soil surface can be torn apart until living roots are seen, and then gypsum powder is sprinkled for sterilization, or diluted lime water is used for sterilization, except for this disease.
Soaking leaves and bones in water can kill aphids.
The mixture of 10~ 15 times of pine alkali was used to spray scale insects, and the effect was good.
The problem of vegetable pest control is too wide to be answered. Describe the characteristics of plant diseases and insect pests of a vegetable, so as to give you a symptomatic control plan.
Prevention and control of diseases and insect pests of rehmannia glutinosa. Land selection and soil preparation: Rehmannia likes sunny, dry and warm climate; Poor adaptability to soil, it should grow in neutral or slightly alkaline sandy loam with deep soil layer, loose soil, rich humus, high and dry terrain, which can discharge energy and irrigate, and the growth of clay is poor. Avoid repeated planting. It takes 7-8 years to replant after harvest. We should avoid planting sesame, peanut, cotton, rape, beans, cabbage, radish, melon and other crops in the previous crop, because these crops are prone to root-knot nematode disease and red spider.
Second, the breeding method Because the offspring of sexual reproduction of Rehmannia glutinosa grow irregularly, it is not suitable for production and is mostly used for breeding. In production, rhizomes are mainly used for asexual reproduction. There are sparse rosary nodules on the rhizome of Rehmannia glutinosa, and there are leaf scars (bud eyes) on the nodes. Generally, there are more than three dormant buds in leaf scars, which can germinate into plants under suitable environmental conditions after removing the apical advantage of aboveground parts. The rhizome of khaki can be used as asexual propagation material, and the rhizome at this time is also called sowing.
The head, middle and tail of Rehmannia glutinosa can be planted, but the yield of the head and rhizome is the highest, followed by the middle and tail. In addition, the quality of rhizome also has a great influence on the emergence of Rehmannia glutinosa. If the inside of the rhizome has turned black, it can germinate after planting, but it will not grow well or even die, and the withered rhizome will germinate badly. Therefore, it is necessary to select disease-free rhizomes with the thickness of 1-2 cm, remove the tail section of 1-2, and cut them into small sections of about 5㎝ for planting, and each section must ensure that there are three.
After the rhizome of Rehmannia glutinosa is planted, it needs a certain temperature to germinate. Rootstocks emerge at18-21℃ for about 10 days. At 1 1- 13℃, it takes 30-45 days to emerge. When the temperature is lower than 8℃, it cannot germinate. At this time, too much water often leads to seed rot and lack of seedlings; If it encounters high temperature and drought, the seeds will be dehydrated and drained, which will also cause direct economic losses and a large number of seedlings will be lacking.
Rehmannia glutinosa is planted in spring When planting, ditch at the row spacing of 0.33m( 1 ft), put 1 section of rhizome (8000- 10000 plants per mu, about 45 kg) in the ditch every 15cm, then cover the soil for 3-5 cm, slightly compact it, and then pour water.
Third, on-site management
⑴ Covering with grass: After planting Rehmannia glutinosa and covering the soil, covering the border with grass or other crops Artemisia stem can inhibit the growth of weeds and keep the soil loose.
(2) Intercropping: 20-30 days after emergence, remove excess seedlings during intertillage weeding. The principle is to discard the inferior and keep the superior, and leave 1-2 seedlings everywhere.
(3) Topdressing: After the emergence of Rehmannia glutinosa, a large number of fleshy rhizomes began to form 1 month. After two months, the dry matter of rhizomes increased sharply, and the line was harvested in about two and a half months, so topdressing must be completed before the line was harvested. Topdressing is needed for 2-3 times during the whole growth period of Rehmannia glutinosa. The first time is 20 days after 15- full seedlings, the second time is 20-30 days after the first follower fattens, and the third time depends on the growth strength of seedlings. Top dressing is mainly nitrogen fertilizer, and 20-30 tons of human and animal manure or 3.5-5 kilograms of urea are used per mu each time.
⑷ Intertillage and weeding: Rehmannia glutinosa root system is shallow, so the number of intertillage should not be too much. Too much intertillage will often reduce production due to root damage. Only intertillage (shallow tillage) 1-2 times is needed in the whole growth period. But there are weeds that need to be pulled out in time.
5] Drainage and irrigation: In case of drought after sowing, water should be given in time to improve the emergence rate. Rootstocks form rapidly 2-3 months after sowing, which requires more water, and it is also a period when roots are perishable. At this time, attention should be paid to rational irrigation and timely drainage.
[6] Picking flowers: If you don't plant Rehmannia glutinosa, you should pick off the pregnant buds in time to avoid consuming nutrition.
Fourth, pest control.
1, disease (1) ring rot: the pathogen is a semi-unknown fungus among fungi, and the leaf spot is yellowish brown, nearly round or irregular, with obvious concentric ring marks and small black spots on it.
Prevention and control methods: remove diseased leaves and burn them centrally. Ditching and drainage in time after rain; Spray 10- 14 days with1:500 bordeaux solution, and use 500-600 times of 65% zineb solution every 7- 10 days for 3-4 days.
⑵ Fusarium wilt: Pathogen is a semi-unknown fungus among fungi. At the beginning, the petiole appeared brown spots in water, the outer leaves spread to the heart leaves, and the petiole rotted. The aboveground part gradually withered and drooped, and the underground part rotted. Prevention and control methods: implement crop rotation once every 3-5 years; Digging ditches and draining water in time; Soak seeds with 50% bactericide 1000 times solution for 3-5 minutes before planting; At the beginning of the disease, 50% carbendazim 1000 times solution or 50% carbendazim 1000 times solution was poured. Every 7- 10 days, 2-3 times in a row.
⑶ Ring rot: It occurs in the dry season from June to July. At the beginning of the disease, there are slightly round and wheel-shaped spots on the leaves, and there are many small black spots on the spots; Rupture and perforation of late lesion.
Prevention and control methods: burning diseased plants or spraying1∶1∶ (120-140) times bordeaux solution once every 15 days for three times in a row, and the prevention and control effect is good.
2. The pests are mainly red spiders and leopard butterfly larvae.
(1) Starscream: It happened in June and July. After the occurrence, yellow and white spots appeared on the leaves, and then gradually turned yellow, and cobwebs appeared on the back of the leaves. In the later stage, the leaves shrink and are covered with many red spots (that is, red spiders). Can spray1:1000 omethoate.
⑵ Lepidoptera caterpillar larvae (also called yellow caterpillar or caterpillar): overwintering larvae appear in March. The first generation larvae hatch in June, the second generation in late July and the third generation in early September. August is the peak of breeding, especially in dry season. After the occurrence, leaves and meat are eaten into the net by larvae. Larvae above the 3rd instar live in dispersion, eating leaves into irregular wormholes, and at worst, only veins are left. Can spray1:1000 omethoate.
Verb (abbreviation for verb) harvest
Generally, autumn harvest can be carried out when the leaves gradually turn yellow, the stems shrink, the seedlings top and stop growing, the roots begin to enter the dormant period, and tender rehmannia turns red and Huang Shi. When harvesting, shovel the plants, open a trench about 0.33 m (1 ft) deep at the edge of the ground, and then dig along the trench line by line to prevent the roots from being lost, broken or damaged. Graded baking processing is carried out on the ground according to different sizes. Fresh rehmannia glutinosa should not be stored for a long time and should be processed in time.
The newly dug rehmannia glutinosa is spread and dried for 3-5 days. When the epidermis is slightly dry, bury it with moist river sand. The temperature in winter should not be lower than 5℃. If stored in the cellar, fresh medicinal materials can be dried for one day, and then the whole ones can be selected and discharged with several layers of sand, and the height can be controlled at 30-40 cm. The method can reduce mildew and prolong shelf life.
Jinhua arrowroot 1 pest control. Symptoms and characteristics of bud rot (1): after the invasion, countless white spots appear on the leaves, which spread along the veins and fuse together, making the leaves partially or completely black, and the diseased spots spread along the petiole, which will cause bud death. After the old leaves are infected, brown spots, stripes and distortions appear. After the flower buds were invaded, the stems rotted and the flowers were destroyed. (2) Prevention and cure method: soak the rhizome with streptomycin 1000 times solution for disinfection, remove the diseased stems and leaves in time during management and burn them. The planting density of flower fields should be reasonable, not too dense, keep ventilation and light transmission, and keep the environment dry, which is conducive to disease prevention. After onset, plants can be sprayed with 4000 times solution of 72% streptomycin. 2. Symptoms of virus disease (1): The roots with virus show symptoms such as slow germination and weak seedling growth at seedling stage. Some plants only have symptoms in adulthood, which is manifested in the heart leaves. As soon as the leaves come out, they produce pale green stripes parallel to the veins, some of which are intermittent, and the leaves are shrunk, uneven or curly. Most or all leaves turn yellow in the later stage. The newly infected plants have mottled leaves of dark green and light green. It can bloom normally when the disease is mild, but the flowering period is very small. When the condition is serious, the contraction can't be extended, the flower buds can't be extended, and the flowering is blocked. The virus source is a strain of cucumber mosaic virus. It is also related to the occurrence of aphids. The climatic conditions favorable to aphids are favorable, and the virus disease is also serious. (2) Prevention and control methods ① Select disease-free plants to keep seeds, and do not use virus-carrying rhizomes as propagation materials. ② Dig out the diseased plants as soon as possible, burn them centrally or bury them deeply, so as to reduce the germ source in the coming year. (3) Spraying drugs in time to prevent aphids and reduce the spread of infection. The medicament can be 1200 times of 50% pirimicarb wettable powder or 3,000 times of 2.5% Kung Fu EC and 1500 times of 40% dimethoate EC. ④ When necessary, spray 10% mixed fatty acid aqueous solution 100 times or 10% valin soluble aqueous solution 500 times, 5% mushroom proteoglycan aqueous solution 300 times, 7.5% keduling aqueous solution 800 times and 3.8% valin wettable powder 700 times. 3. Harmful characteristics of sweet potato beetle (1): also known as blue-black golden flower worm and sweet potato scarab. Adults eat apical tender leaves and stems. At the seedling stage, the top of canna often breaks, and the seedlings grow slowly or the whole plant dies. Larvae also absorb rhizomes from the soil, thus affecting the growth of rhizomes. (2) Control method: Before planting, soak the root tuber with 40% omethoate or 500 times cartap for 5- 10 minutes, and then plant it after drying. In management, the insect body should be removed in time to prevent adults from laying eggs, and adults can be killed when there is dew in the morning. At the peak of adults, 80% dichlorvos 1000 times was sprayed.
Indoor flower pest control and plant pest control are basically the same. You can visit China Yunnan Orchid Network, which should solve your problem.
Pest control of Acer mono
The cultivation techniques of five-pointed maple, of course, also include pest control. There will be many different kinds of pests and diseases in the planting process, so the pest control technology of Wujiaofeng should also be based on evidence. Because the pests and diseases of this tree are rare, it can be prevented if new high-fat film is sprayed regularly all the year round. The following are the specific pest control techniques of five-pointed maple.
The main diseases of Acer truncatum seedlings are damping-off and brown spot, which mostly occur in the rainy season from June to August. Therefore, in order to prevent and control the diseases of five-pointed maple, 0. 1% diclofenac or a mixture of pentachloronitrobenzene, namely 3 parts of pentachloronitrobenzene, 65,433 parts of carbendazim and 65,430 parts of diclofenac, can be sprayed within 7- 10 days after all seedlings are unearthed. The disease of five-pointed maple occurs quickly in nursery period, so measures must be taken immediately to spray Bordeaux mixture or pentachloronitrobenzene mixture with a ratio of 1∶2∶200 on plants to achieve pest control in nursery period.
When powdery mildew occurs in five-pointed maple, Bordeaux mixture (inorganic copper bactericide) can be sprayed, and Bordeaux mixture 1 ~ 2 times can be sprayed at the initial stage, or the mixture of stone and sulfur can be used for control. And remember to collect the diseased fruits and leaves after the five-pointed maple tree gets sick in autumn, and then burn or bury them.
The main pests of five-pointed maple are spiny moth, moth, aphid, longicorn and so on. Aphids harm the tender branches and leaves of five-pointed maple. We can inject 500 times of 40% omethoate EC or 80% DDVP emulsion 1500 times of EC into the hole of the trunk, and then seal it with yellow mud, which can effectively prevent and control the harm of these pests and diseases to the five-pointed maple.
Sunflower Pests The main pests for controlling sunflowers are: golden needle worm, grub, cutworm, meadow moth, chafer and sunflower moth. Underground pests can be treated with poison bait prepared by omethoate. Grasshoppers and scarabs harm stems and leaves, and sodium fluorosilicate can be sprayed. If the seed kernel is damaged, you can spray the flower tray with omethoate when the tubular inflorescence withers. The main diseases of sunflower are rust, Sclerotinia sclerotiorum and solar spot. Rust can be harmful from seedling stage to mature stage, and the control methods are generally resistant varieties, crop rotation, increasing potassium fertilizer application or treating stems and leaves with 25% Weixiuling 2000 times solution. Sclerotinia sclerotiorum, commonly known as rotten head, harms stems and discs, and can be treated by seed dressing or stem and leaf treatment with "Redomo". The podium is a flowering parasitic plant, which absorbs juice from the root of sunflower, and the drought and heat are the most harmful. The best way to eliminate the podium is to shovel and hoe in the field in time. 1. Sclerotinia sclerotiorum is a common and serious disease, which can cause stem breakage, disc rot and kernel rot of sunflower, posing a great threat to sunflower production. There are four kinds of common root rot, stem rot, leaf rot and flower rot, among which root rot and flower rot are the most serious. The characteristic of flower rot is that after the disk is damaged, water-soaked spots appear on the back of the disk, which turn brown and rot in the later stage, grow white hyphae, spread between achenes and fruit seats, and form black sclerotia. After rot, the disk falls off and achenes cannot mature. Slightly damaged disk produces small seeds, which are dull and bitter, and the epidermis falls off, so most seeds cannot germinate. Prevention and control measures: In the early stage of dish preparation, agents such as Sukeling, Junhejing, Nongliling, Bikuli or carbendazim can be selected for spray prevention and control, with the emphasis on protecting the back of dishes. Because the sunflower plants are tall in the later stage, it is difficult to spray chemicals, and it is also possible to reduce the humidity by hitting poles in the field after rain.