Technical Opinion on "One Spray, Multiple Promotions" for Soybeans

Just after the beginning of autumn, soybeans in Northeast China are in the stage of pod filling and grain filling, while soybeans are in the stage of flowering and pod setting. They have entered a critical period for yield formation and are also a window period for implementing the "one spray, multiple promotions" policy for soybeans. Each region should closely follow the agricultural season, adopt targeted and classified policies, select fertilizers and pesticides, scientifically match them, spray them in a timely and precise manner, unify operations, ensure safety, and fully implement the "one spray, multiple promotion" spraying operation to consolidate the foundation of soybean harvest.

Set goals according to local conditions. With the goal of "promoting early maturity, disaster prevention, and fruit setting", and with a focus on "fertilizer and water regulation, foliar spraying, and post disaster recovery", we also take into account disease and pest control. We implement tailored policies based on different seedling conditions, disaster situations, and diseases, and apply a mixture of foliar fertilizers, regulators, fungicides, and insecticides in different regions, disaster types, and stages to promote stable growth, post disaster recovery, mature filling, and yield improvement of soybeans. Soybean growth regulators can be selected from brassinolide, thiamethoxam, gibberellin, 14 hydroxycoumarin thiamethoxam, calcium citrate, etc.

Highlight key and excellent formulas. For normal plots, with "promoting early maturity and increasing grain weight" as the core, water-soluble fertilizers such as potassium dihydrogen phosphate are selected to delay leaf aging and improve photosynthetic efficiency. For drought affected areas, potassium dihydrogen phosphate, water-soluble fertilizers containing trace elements, and drought and stress resistant preparations can be sprayed. For flooded land, urea and potassium dihydrogen phosphate can be sprayed on the leaves after timely drainage, and amino acid water-soluble fertilizers, amino oligosaccharides, mushroom polysaccharides, etc. can be added according to local conditions. For plots with a high threat of early frost, phosphorus and potassium fertilizers or liquid film can be sprayed.

Standardize homework to ensure safety. In terms of homework time, try to avoid the high temperature period at noon and choose to do it before 9am or after 4pm. In case of wind force greater than level 3 or rainy weather, pesticide application should be stopped; If there is heavy rain within 24 hours after spraying, it should be promptly sprayed again. In terms of operation mode, when using crop protection drones for spraying, the amount of pesticide sprayed per mu should be at least 2 liters, and settling agents should be added. The flight height and speed should be appropriately controlled, and the spraying flight route should be planned to avoid missed spraying and re spraying; When using large-scale plant protection machinery for spraying, the amount of pesticide sprayed per mu should be at least 15 liters, and attention should be paid to driving at a constant speed and reducing seedling pressure. In areas where large crop protection drones cannot operate around fields, fields, and forest belts, manual spraying is required.