实施保护性耕作对保护黑土带的效应  

Protecting Effect of Protective Cultivation on Black Soil Zone

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

机构地区：[1]吉林农业大学,长春130118

出　　处：《东北林业大学学报》2007年第9期59-60,80,共3页Journal of Northeast Forestry University

基　　金：中国科学院知识创新工程重大项目(KZCXI-SW-19-3-02)

摘　　要：采用保护性耕作措施及其以根茬留田为主要的技术环节,论证了根茬留田的保土肥田效应。垄作少耕、根茬留田可以减轻水土流失,保护黑土层不受侵蚀,特别是干旱春季保墒效果良好,有利于一次播种保全苗,同时发挥着未腐解有机物的培肥效应;增强土壤生物活性,更新土壤中已渐老化的腐殖质,提高土壤保肥供肥性能,保持和增进地力。Measures for protective cultivation and stubble remained in field were applied to soil fertility improvement. Less cultivation in ridge system and stubble remained in field can lighten soil and water loss and protect the black soil layer from erosion, and the effect of soil moisture and water conservation in dry season （spring） is more obvious, which help to ensure all seedlings are alive. Meanwhile, the fertilization effect of non-degraded organic trotter can be brought into play. Moreover, less cultivation in ridge system and stubble remained in field can increase the microbial activities of soil, renovate the gradually aging humus and improve soil fertility.

关 键 词：黑土带 保护性耕作 培肥地力 防止侵蚀 

分 类 号：X157.4[环境科学与工程—环境科学]