First, flowering and podging period This period is the most prosperous period of
Soybean production. The main goal is to cultivate strong plants, increase flower growth, and reduce flower bud loss. Remove weeds and topdressing fertilizers as required. For lands that are thin and thin, soybean seedlings are thin and young, and land that cannot be ridged in time can be topdressed with nitrogen fertilizers at the early flowering stage. Generally, 5-7.5 kg of ammonium nitrate can be applied per acre. During the flowering stage, topdressing with phosphate fertilizer is also required to improve the quality of the beans and promote maturity. Spray 25%-3% of superphosphate solution 32.5-75 kg per acre on the plants. Pot irrigation water, water irrigation during the flowering period can increase production 15% -30%. Irrigation can be determined based on soybean varieties, weather conditions, and soil conditions, ie, the number of irrigated and water-intensive varieties should be appropriately increased, and more varieties requiring more water and moisture should be filled more than stalk-soft varieties. To grasp the long-term clear, rain-free speed irrigation, it will be raining without irrigation, the rain will be insufficient for early irrigation, and the black earthworm (with sufficient soil moisture) will not be flooded, and the "yellow grasshopper" (with insufficient soil moisture) shall be filled. For soils with large sand, poor water retention and poor fertilizer, light irrigation and ground irrigation should be used; viscous soils with strong water storage and easy evaporation of water should be used, and the amount of irrigation water should be more appropriate; soil structure is good, organic matter is large, and water retention is good. Soil, irrigation frequency and irrigation volume should not be too much. For lands with high groundwater level, the number of irrigations should be less and the amount should be smaller; the frequency and quantity of irrigation should be increased when the groundwater table is low. In places where groundwater levels are often very high, drainage should be taken care of. At the same time, in order to prevent lodging, the flowering period is still topping, and the top of the main stem of soybean is generally removed by about 2 cm. Soybean sprouts and pods often occur in soybean pods, eating hearts and other pests, can be used 20% chrysanthemum EC 30-50 ml of water spray 30-35 kg, 2% killing pine loose powder with 2 kg of powder spray per acre to control pests. Fertilizer production in high-yield fields should be carried out according to the principle of less application at the flowering stage and more facilities at the end of the crop.
Second, drumsticks long-grained period to take water or drainage, pest control and other measures to prevent pests and other measures to maintain a larger leaf area, extend its functional period, increase the amount of organic matter synthesis, to achieve more than a few, many grain, grain weight and high yield purposes.
After maturity, the soybeans should be harvested in time, mechanical sun drying can be used 2-3 days earlier, and harvesting using a combine harvester should be carried out 2-3 days later.
