一、概述当前,土壤耕作技术的改革,引起国内外从事农业工作者的普遍关注。特别是欧、美、澳及东南亚等几十个国家已采用一整套新的包括免耕或少耕法在内的土壤耕作体系,在多种粮食作物和经济作物的栽培中,都起着节能、省劳和增产的作用。据报道,美国采用免耕法播种粮食面积已超过全国耕地七分之一,其中玉米应用免耕法,9年平均单产93.8公担/公顷,比传统耕法增产8.3％,耗油量减少三分之一,劳动生产率提 I. Overview At present, the reform of soil cultivation technology has aroused the widespread concern of agricultural workers both at home and abroad. In particular, dozens of countries in Europe, the United States, Australia, and Southeast Asia have adopted a whole new set of soil tillage systems, including no-tillage or less tillage, and have played a major role in energy saving in the cultivation of various food crops and cash crops , The role of provincial labor and increase production. It has been reported that the area of ​​grain sown by the United States using no-till farming has exceeded one-seventh of the country’s total cultivated land. Among them, the no-till method for maize yields 93.8 hectares per hectare in 9 years, an increase of 8.3% over the conventional tillage method and a reduction of fuel consumption by 3 One part, labor productivity mention