随着化学除草剂的广泛使用,控制或消除了草害,但稻田使用除草剂以后是否还需要人工中耕,尚有争论,需要研究解决。我们自1973年以来连续进行了此项试验,比较了化学除草不中耕和人工中耕的除草效果及增产效应,并对稻株及土壤作了一些测定分析。现将三年来的试验结果,初步总结如下: With the widespread use of chemical herbicides, grass control is eliminated or controlled. However, there is still a debate about whether artificial cultivation should be carried out after the use of herbicides in paddy fields. Therefore, it needs to be studied and solved. We have conducted this experiment continuously since 1973, comparing the herbicidal effect and yield increasing effect of chemical herbicidal non-tillage and artificial cultivating, and made some determination analysis on rice plant and soil. Now three years of test results, the initial summary is as follows: