新疆国营农场从1973年开始推行化学除草,1979年化学除草的面积发展到70多万亩,灭草效果达90%左右,省工省本,很受群众欢迎.为了更好地掌握化学除草的施药时期、方法和用药量,我们对稻田、棉田的杂草及化学防除效果进行了调查,现分述于下. Xinjiang state-run farms started chemical weeding in 1973. In 1979, the area of ​​chemical weed has grown to more than 700,000 mu and the effect of eliminating weeds has reached about 90% .It is popular among provinces for saving labor and capital. In order to better understand the effects of chemical weeding Application time, methods and dosage, we have paddy fields, cotton weeds and chemical control effects were investigated, are described below.