摘要
本文采用田间与盆栽试验结合的方法探讨在未施肥条件下大豆生育过程中土壤肥力的变化。结果表明,种植大豆能明显改善土壤的理化性状。收获期大豆根区土壤全氮基本保持平衡,增加有机质含量,减少速效氮的消耗,提高土壤水稳性团聚体含量,改善土壤结构。
The physical and chemical characters of the tilth soil could be obviously improved through planting soybean on it.The total nitrogen content in soil where soybean roots spread could be basically balanced until harvest stage.The content of organic matters in soil could be increased and depletion of soil available nitrogen could be decreased.The content of soil waterstable aggregate could also be increased through planting soybean.
出处
《中国油料》
CSCD
北大核心
1992年第4期38-40,共3页
关键词
大豆
根区土壤
生理化学特性
Soil nutrients
Soybean
Soil waterstable aggregate
