作物根茬留田的保土培肥效应  

Effects of Crop Stubble on Soil Conservation and Feitilization

作　　者：冯君[1] 李万辉[1] 耿玉辉[1] 姜亦梅[1] 姜岩[1] 

机构地区：[1]吉林农业大学,吉林长春130118

出　　处：《土壤通报》2006年第5期890-893,共4页Chinese Journal of Soil Science

基　　金：吉林省科技发展项目990532

摘　　要：论述了作物根茬留田可以增强土壤的生物活性,促进土壤中的生物化学过程,从而更新土壤中已渐老化的腐殖质,保持地力常新。这种培肥效应,改善了土壤的物理性状和增强土壤的保持水土和保肥供肥性能,增加了作物的产量。连续根茬留田还有迭加效应。It was found that crop stubble increased the microbial activities of soil and accelerated the process of soil biochemistry due to the refreshment of the old humic substance. This effect was resulted from the improvement of soil physical properties and this, in turn, increased the ability of the soil to maintain water. At last, crop yields were enhanced.

关 键 词：根茬留田 保土肥田 保肥供肥 迭加效应 

分 类 号：S158[农业科学—土壤学]