How to manage safflower in the field?

(1) Fixed-distance seedling: When the height of spring-sown safflower seedlings is about 10 cm, fixed-distance seedling is carried out at about 20 cm; Safflower is planted in autumn, usually between seedlings before winter and at the beginning of spring. Reasonable close planting should be ensured, and the survival of the fittest should be eliminated, and 30 thousand seedlings should be protected every 667 meters.

(2) Weeding by Changing Tillage to Soil Safflower grows slowly at seedling stage and is vulnerable to weeds, so it should be weeded in time. Especially in autumn, the seedling stage of safflower is long, so the weeding times should be increased. Adult safflower, the flower head is located at the top of the branch, which is heavier and prone to lodging. After weeding, intertillage should be carried out in time. Spring-sown safflower is usually weeded three times in intertillage, the first time at seedling stage, the second time at the early stage of stem node elongation, and the third time before plant ridge sealing.

(3) Top dressing in bud stage can increase yield. Excessive fertilization in the early stage will lead to white growth of plants, easy to break and lodging, or premature closure and insufficient ventilation, which will lead to the aggravation of diseases and affect the later growth. Therefore, fertilization can be divided into two times. The first time, before and after the seedlings are fixed, light fertilizer is used to raise seedlings; The second time in the bud stage, it is advisable to fertilize more and strengthen the seedlings. Generally, farmyard manure 1500 ~ 2000 kg is applied every 667㎡, and 5 kg of nitrogen fertilizer is mixed. If the base fertilizer is sufficient and the seedlings are in good condition, the first topdressing can be omitted.

(4) After topping and pulling out the stem, there are many branches on the upper part, which are easy to lodging, so it is necessary to cultivate the soil in early May. Remove the terminal buds in time after stem pulling to promote the increase of branch buds.

(5) Irrigation and drainage. In China, safflower is mostly cultivated in arid areas or dry seasons, so proper irrigation should be paid attention to before emergence, overwintering, budding and flowering. Irrigation should be done several times, and flooding is strictly prohibited. When the rainy season comes, it is necessary to dredge the drainage ditch to ensure that there is no water in the field after the rain.