How to control the falling flowers and pods of soybean
1. Reasonable topdressing. Usually, nitrogen fertilizer is applied once at the early flowering stage of soybean, which can reduce the rate of flower and pod dropping, prolong the life of plant, increase seed weight and increase yield. Generally, ammonium nitrate can be applied 150~230 kg per hectare, or urea 120~180 kg; in the flowering and pod stage, topdressing can be carried out outside the root, urea 0.5 kg per mu, calcium superphosphate 1.5 kg, potassium sulfate 0.3 kg, borax 30 g, water 50 kg, extract extract solution, spray on the leaves, which is conducive to maintaining flowers, increasing pods and increasing seeds, and increasing the weight of 100 seeds.
II. Chemical control treatment. Chemical control treatment can be carried out on the plots with excessive soybean growth to prevent excessive growth, improve field ventilation and light transmission conditions, optimize soybean growth environment, promote good soybean growth and reduce flower and pod drop.
3. Drought and waterlogging control. "Soybean flowering, furrow touch shrimp". Soybean from flowering to pod setting period is the most water absorption in soybean life, the fastest period, this period of drought easy to drop flowers and pods, so reasonable irrigation, to prevent drought, irrigation should be a thorough irrigation, see drought irrigation, avoid heavy irrigation, soybean is afraid of waterlogging, flooding is also easy to cause flowers and pods, so at the same time to do a good job in flood prevention work.
4. Prevention and control of diseases and pests. Due to the large area of continuous cropping, the occurrence area of soybean diseases and insect pests is also large and serious, so we should insist on prevention first, combination of prevention and control, comprehensive management, and reduce flower and pod shedding.
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Mechanized high-yield cultivation techniques of soybean close planting
The comprehensive high-yield cultivation technology of soybean close planting mechanization is on the basis of soybean three-ridge cultivation technology, continuing to maintain deep loosening, layered deep fertilization, precision sowing, absorbing foreign experience in increasing production, such as narrow row close planting and semi-dwarf varieties, and combined with supporting machines and tools, a mechanized comprehensive high-yield cultivation technique is assembled, including flat sowing and small ridge dense planting techniques. First, technical advantages. 1. Reasonable close planting to increase output. The technical characteristics are reasonable close planting, uniform distribution of crops and increase of crop photosynthesis. Select semi-dwarf varieties with lodging resistance.
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Matters needing attention in planting zedoary turmeric
Matters needing attention in planting zedoary turmeric
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