云南省广大农村在大面积的稻田中推广使用化学除草剂。到七月二十日,全省使用化学除草剂除草的稻田占全省稻田总面积的将近三分之一。用化学除草剂除草是一项经济、有效的增产措施。云南各地的实践表明,使用成本较低的扑草净、敌草隆、除草醚等化学除草剂,可以把百分之八十到九十的稻田杂草除掉,既能增产稻谷,又节省了大量人力。据楚雄彝族自治州调查,使用化学除草剂除草,每亩 The vast rural areas of Yunnan Province promote the use of chemical herbicides in a large area of ​​paddy fields. By July 20, paddy fields that use chemical herbicides in the province will account for nearly one-third of the total paddy fields in the province. Weeding with chemical herbicides is an economical and efficient stimulation. Practice in various parts of Yunnan Province shows that the use of chemical herbicides such as prometryne, diuron and weed-ether, which are cheaper, can remove 80 to 90 percent of weeds in paddy fields and increase both the production of rice and the savings A lot of manpower. According to the investigation of Chuxiong Yi Autonomous Prefecture, the use of chemical herbicides weeding, per acre