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施肥是大豆高产栽培中的重要措施。了解大豆的需肥特点是合理施肥的基础。大豆根部着结根瘤,固定空气中的氮素,可为大豆整个生育期提供1/2到2/3的氮。如何充分发挥根瘤的固氮能力,改善大豆氮素营养,是提高大豆产量和品质的重要途径。然而,根瘤的固氮效能受多种因素影响,国内外对此作了大量的试验研究,目前对大豆施氮肥
Fertilization is an important measure in high-yield cultivation of soybean. Understand the characteristics of soybean needs fertilization is the basis for rational fertilization. Soy nodules root nodules, fixed in the nitrogen in the air, soy can provide the entire growing period of 1/2 to 2/3 of the nitrogen. How to give full play to nitrogen fixation capacity of nodules and improve nitrogen nutrition of soybean is an important way to increase soybean yield and quality. However, the nodule’s nitrogen fixation efficiency is affected by many factors, and lots of experimental studies have been done at home and abroad. At present,