2008—2009年分别在重茬和迎茬条件下进行了不同耕作措施对大豆产量影响的试验研究。结果表明，良好的耕作措施增产原理是生态控制了重茬大豆减产的影响因子，通过调控土层，改变病原菌、虫卵和生化他感物质的位置，使有害生物由于改变了生境而致死，有害物质遇到了更有利于被分解的环境而被分解。耕作措施改善了土壤水、肥、气、热、菌，使大豆生长旺盛，根系发育良好，抵御因重迎茬带来的逆境，缓解了危害，最终达到了增产的目的。% The effect of different tillage practices on yield of continuous soybean and alternate cropping soy⁃bean was investigated in 2008 and 2009. The results showed that the yield improved principle by better tillage practices was ecological control in regulating limiting factors to continuous soybean and alternate cropping soybean yield, which could be explained by changes in position of pathogen, pest insect eggs and biochemical substance as well as the death of pest insects and fast decomposition of harmful substances. The improved en⁃vironment in soil water, fertility, aeration, heat and bacteria by tillage practices, was beneficial to soybean growth, particularly to root development.
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