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前言随着农业生产的发展,大豆施用化肥量不断增加。但如何合理施用肥料,仍是生产中面临的重要课题。合理施肥要求对种子萌发和幼苗生长不产生盐害,同时又要保证作物最有效的利用养分,以协调营养生长和生殖生长的关系,并在土壤—作物体系中使养分损失减少到最低限度,为此,我们布置了不同施肥深度和不同施肥部位试验,结果表明,
Preface With the development of agricultural production, the amount of fertilizer applied to soybeans is constantly increasing. However, how to properly apply fertilizers is still an important issue in production. Rational application of fertilizers requires no salt damage to seed germination and seedling growth while ensuring the most efficient use of nutrients in crops to coordinate the relationship between vegetative and reproductive growth and to minimize nutrient losses in soil-crop systems, To this end, we arranged different depth of fertilization and fertilization sites test, the results show that,