摘要
不同耕作方式对麦田土壤理化性质的影响研究结果表明,与翻耕不覆盖秸秆处理、翻耕秸秆覆盖处理相比,免耕秸秆覆盖处理的土温变化平稳;土壤自然含水量提高;土壤容重分别下降了5.6%和4.0%;土壤有机质、全氮、全磷、全钾分别提高了7.7%和0.5%、5.1%和1.1%、3.4%和-1.6%、7.0%和1.7%。免耕覆盖较其他耕作方式有着较为明显的优势,在改良土壤结构、防止水土流失、提高经济效益等方面具有积极作用。
Effect of different tillage methods on the soil properties of wheat field were studied in this paper,results showed that,compared with treatments with plowing and taking straw away,plowing and returning straw to field by coverage,the treatment with no-tillage and returning straw to field by coverage could keep the change of soil temperature more flat,soil water content increased;soil bulk denstity decreased by 5.6% and 4.0% respectively;soil organic matter contents,total nitrogen content,whole phosphorous content and whole potassium content increased by 7.7% and 0.5%,5.1% and 1.1%,3.4% and-1.6%,7.0% and 1.7% respectively.The treatment with no-tillage and returning straw had obvious advantages than other treatments,which could play an important role in improving soil properties,preventing soil erosion and improving economic effect,etc.
出处
《现代农业科技》
2012年第7期276-277,282,共3页
Modern Agricultural Science and Technology
关键词
耕作方式
土壤理化性质
免耕覆盖
四川西昌
小庙乡
tillage methods
soil properties
no-tillage coverage
Xichang Sichuan
Xiaomiao Town
