合理的轮作倒茬能够增加农作物的产量,提高或保持土壤肥力,这已被农业生产实践所证实。但是前几年某些地方搞乱了合理的轮作制度,茬口越倒越乱,土地越种越薄,产量逐年下降。这是目前农业生产需要解决的重要问题之一。1979年5月,我们对万荣县汉薛、皇甫两个公社的部分大队进行了调查研究。现在对该地区的轮作制度进行粗浅的讨论,为晋南旱地制定合理的耕作制度提供参考。 Reasonable crop rotation can increase crop yields and increase or maintain soil fertility, as evidenced by agricultural practices. However, in some places a few years ago, the reasonable rotation system was confused in some places. As the situation became more and more chaotic, the more thinning the land was, the more the output fell year by year. This is one of the important issues to be solved in agricultural production. In May 1979, we conducted a survey of some brigades of Han commune and Huangfu commune in Wanrong County. Now we have a superficial discussion on the rotation system in this region and provide a reference for formulating a reasonable farming system in drylands of South Shanxi.