用撒油沙法防治稻飞虱、稻叶蝉等小害虫,是过去推广使用过的土办法,而今仍可应用。此法防治效果可达80%以上,并有以下好处:一是成本低,每亩只需几元钱,比用农药要低一倍多;二是无药害,能保护稻飞虱、稻叶蝉的 The use of oil sands method to control planthoppers, rice leafhoppers and other small pests, is to promote the use of the soil in the past, but can still be applied. This method of prevention and treatment of up to 80% or more, and has the following benefits: First, low cost, only a few dollars per acre, more than double the use of pesticides; Second, no injury, to protect planthoppers, rice Leafhopper