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一、少耕、免耕 1943年美国的佛克纳(Edwayd H.Fauikner)在他写的《庄稼人的蠢行》一书中对犁提出非议,并提出“免耕”的论点,到现在已有40余年的历史了。目前世界上已有30多个国家大规模地采用免耕法和少耕法,面积还在不断扩大,正引起农民、农学家、耕作学家的注意。当前国际上按农机具对土壤耕作的强度和次数,把土壤耕作划分为三种耕作体系,一是常规耕作;二是免耕制又称零耕制;三是少耕制。三种耕
I. Less Tillage and No Tillage Edwayd H. Fauikner of the United States raised the issue of plowing in his book The Stupidity of Themselves, 1943, and put forward the argument of “no-tillage,” and up to now More than 40 years of history. At present, more than 30 countries in the world have adopted the no-tillage and tillage methods on a large scale and the area is still expanding. This is attracting the attention of farmers, agronomists and tillage scientists. At present, according to the strength and number of times of agricultural implements to soil cultivation in the world, the soil cultivation is divided into three kinds of farming systems, one is conventional farming; the other is zero-tillage is also called zero-tillage; the third is less tillage. Three kinds of farming