教育培训和技术援助在推广保护性耕作中的作用

保护性耕作技术是众多减少土壤侵蚀方法中的一种。从广义上来说，保护性耕作是对一种耕作体系的定义，是指在作物收获后，将足够的谷物秸秆覆盖在地表以保护土壤不被侵蚀。总的来说，覆盖量达到30％时．就被认为是保护性耕作。根据土壤类型、谷物轮作方式、冬季作物以及其他的因素，秸秆覆盖方式有所不同？

The Role of Education and Technical Assistance in the Use of Conservation Tillage

Conservation tillage is one of many conservation practices developed to reduce soil erosion. In its broadest sense, conservation tillage is defined as a tillage system that leaves enough crop residue on the field after harvest to protect the soil from erosion. In general, tillage that leaves a residue cover of at least 30% is deemed conservation tillage. Residue cover will vary, however, according to soil type, crop rotation, winter crop cover and other factors.