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乐果和氧化乐果乐果原药为淡黄色晶体,有一定水溶性(可达4％),有恶臭味,遇高温易自行分解,遇碱性物质分解更快。对害虫有强烈的触杀作用,对刺吸口器害虫如蚜、螨、介有内吸作用,杀虫范围广、作用快。商品有40％和50％乳油、1.5％粉剂等。根据防治对象可采取喷雾、喷粉、拌种、涂茎、撒毒土等多种方法施药。1.5％粉剂每亩3～5斤喷粉可防治花生蚜、烟蚜、麦蚜、稻飞虱等。50％乳油1,200～2,000倍液喷雾可防治果树、蔬菜等多种蚜虫和红蜘蛛。乐果毒沙防治高粱蚜和大豆蚜,每亩可用50％乳油1两加20斤砂子进
Dimethoate and omethoate The original drug for the light yellow crystals, a certain water-soluble (up to 4%), a bad smell, easy to self-decomposition in case of high temperatures, the event of decomposition of alkaline substances faster. On the pests have a strong role in contact with insects on the piercing mouth, such as aphids, mites, mediated by systemic action, a wide range of insecticide, the role of fast. Goods 40% and 50% EC, 1.5% powder and so on. According to the prevention and treatment of objects can be sprayed, dusting, seed dressing, coating stems, spreading soil and other methods of application. 1.5% powder 3 ~ 5 kg per acre powder can prevent peanut aphids, aphids, wheat aphids, planthoppers and so on. 50% EC 1,200 ~ 2,000 times spray can prevent fruit trees, vegetables and other aphids and spider mites. Dimethoate prevention and control of sorghum aphids and soybean aphid, 50% of the available emulsifiable concentrate per acre 1 plus two 20 kg sand into