一、新耕作法的内容七十年代出现的新耕作法,集中表现在深松和免耕,克服了过去的连年无差别的平翻,无疑这是有利于减少有机质的消耗的。在麦→杂→豆三年一个轮作周期中,其主要耕作方法及效果调查如下:第一年麦作后搅麦茬深松起垄秋镇压;第二年用上年搅麦茬所作成的垄型,在垄上播种玉米,秋季调查其根干重比平翻增 I. The Contents of New Tillage The new tillage practices that emerged in the 1970s focused on deep plowing and no-tillage and overcoming the past year’s indiscriminate flattening. This is undoubtedly conducive to reducing the consumption of organic matter. In the wheat → miscellaneous → beans three years of a rotation cycle, the main farming methods and effects are as follows: the first year of wheat stubble after the deep loose Ridge Qiuqian pressure; the second year made with wheat stubble made the last year, Sowing corn on the ridge, autumn investigation of the root dry weight than the flat increase