How to fertilize soybeans for high yields? A complete guide to fertilization techniques
Soybean is one of China's important food crops, with a long history of cultivation in China and an extremely wide growing range and area. Fertilization is crucial when planting. So how should soybeans be fertilized? When is the best time to fertilize? What fertilizer should be applied? Come to QinNong Net to learn about high-yield fertilization techniques for soybeans.
1. Apply sufficient base fertilizer
Applying sufficient base fertilizer when planting soybeans is extremely important. Base fertilizer is used for seedling growth. Seedling growth needs nutrients, but the root system is weak and has not yet grown, so it cannot absorb what it needs for growth from the soil. Therefore, base fertilizer can help seedlings grow strong quickly and improve disease resistance. Base fertilizer should account for about 50%-60% of the total fertilizer. For base fertilizer, compound fertilizer and organic fertilizer are recommended. Generally, about 30 kg of compound fertilizer is used per mu, while about 2000 kg of decomposed organic fertilizer is used.
2. Skillfully apply seed fertilizer
Seed fertilizer is fertilizer applied together with the seeds when sowing soybeans, mainly to provide nutrients for seed germination so that seedlings emerge smoothly and safely. When applying seed fertilizer, be careful to avoid direct contact between seeds and fertilizer, so as to prevent the fertilizer from burning the seeds and young sprouts and affecting the seed germination rate. When fertilizing, first apply the fertilizer, cover it with a layer of fine soil, and then sow. In this way, after the seeds germinate, they can absorb nutrients and emerge quickly.
3. Apply topdressing at the right time
Base fertilizer and seed fertilizer are meant to meet the fertility needs of seedlings and the early to mid-growth stages, but by the later stage these nutrients have basically been used up. At this time, plants often suffer from nutrient deficiency, which affects yield and quality. Therefore, topdressing is needed to ensure nutrient supply and increase yield. Generally, topdressing is mainly done by root topdressing and foliar spraying. Root topdressing is done at the seedling stage and flowering stage, according to the plant's growth and flowering conditions, and urea is mainly used for topdressing; foliar spraying is to supplement the trace elements lacking in the plant, especially trace elements such as boron, molybdenum, and zinc, generally at the pod-setting stage.
4. Fertilization methods
In the early stage, fertilization should be mainly nitrogen fertilizer, supplemented by phosphorus fertilizer. Nitrogen fertilizer can promote plant growth and can advance flowering and pod setting, while phosphorus fertilizer can improve plant disease resistance, reduce the incidence of disease, and make diseases milder when they occur. By the pod-setting stage, phosphorus and potassium fertilizers should be the main focus, with less nitrogen fertilizer, because the plant has already completed its development and does not need much nitrogen fertilizer, while pod setting has a greater demand for phosphorus and potassium fertilizers. In the later stage, an appropriate amount of organic fertilizer should be applied to provide trace elements and achieve the goal of high and quality yield.
The above is the high-yield fertilization technique for soybeans brought to you by QinNong Net. Friends who grow soybeans can refer to the above content according to actual conditions and fertilize reasonably and scientifically. Hope it can help you. For more related agricultural knowledge, please stay tuned to QinNong Net.