摘要
在美国,发展了只松土不翻土,保持土表有较多覆益物的耕作法,总称为保持覆盖耕作法(Conservation tillage)。与传统耕作法相比,能减少水土流失和风蚀,成本较低,且产量不相上下,所以近年已获得广泛的应用。1988年已占美国全部作物播种面积的32％(3600万ha)。本文较详细介绍了保持覆盖耕作法的定义和主要方式,以及这种耕作法的特点,所用农具和存在的问题。
Conservation tillaget at h stirs the soil with noniversion and leaves more residue on soil surface has been developing in the United State of America.Compared with conventional tillage conservative tillage it reducess the loss of soil, water and wind erosion, and its cost is lower while its yield is similar to that of conventional tillage. In this paper, saveral important aspects of the conservation tillage are introduced.
出处
《河南农业大学学报》
CAS
CSCD
1991年第1期93-97,共5页
Journal of Henan Agricultural University
