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应用土壤养分状况系列研究法对试验土壤进行了养分分析、吸附试验以及盆栽试验。结果表明 N、P、K、S和 Zn元素已成为高产的主要限制因子;在各种元素平衡施用的基础上,不同硫肥均有增产效果,对大豆有促进其根瘤形成,植株生长发育和改善其结实性状的作用。
A series of soil nutrient status research methods were used to analyze soil nutrients, adsorption tests and pot experiments. The results showed that N, P, K, S and Zn elements have become the main limiting factor of high yield. Based on the balanced application of different elements, different sulfur fertilizers have the effect of increasing yield, promoting the formation of nodules and the growth and development of plants Improve its strong traits role.