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我省水稻常年种植面积在3600万亩左右。稻田杂草种类繁多,对水稻生产影响较大。一般年份因草害产量损失约10～15％,高的可达20％以上。据全省农田杂草普查表明,草害Ⅱ级以上需要进行防除的面积在1670万亩左右。从1988年以来,我站对乐吉化工厂生产的丁西颗粒剂进行了防除早、晚稻本田杂草应用技术的试验研究及示范推广,并探讨该药剂安全性、增产效果和推广前景。1988～1991年全省丁西颗粒剂试验、示范、推广面积累计达244万亩次。现将试验研究初步结果总结如下:
Rice perennial planting area in our province about 3600 mu. Paddy weeds a wide range of great impact on rice production. The general year due to grass loss of about 10 ~ 15%, high up to 20% or more. According to the survey of farmland weeds in the entire province, the area under control of Grade II and above requires about 16.7 million mu. Since 1988, I have carried out experimental research and demonstration of Dingxi Granules produced by Lucky Chemical Factory on the application of weeds in early and late rice Honda Weeds, and discussed the safety, yield increasing effect and promotion prospect of this drug. From 1988 to 1991, Dingxi granules in the whole province tested and demonstrated a total area of 2.44 million mu. The preliminary results of the pilot study are summarized as follows: