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在土壤混施有5%乐果的过磷酸钙,对防治甜菜象虫十分有效,甜菜在收获时也无残留物。如乌克兰的甜菜种植面积在150万公顷以上,甜菜象虫危害最严重,1973年由于一次严重暴发,开放了对滴滴涕的禁用令,于5月30日前进行了多次喷施,以适应滴滴涕必须在收前70—80天使用的规定。采用滴滴
In the soil mixed with 5% dimethoate dimethoate, the prevention and control of beetles like insects is very effective, sugar beet at harvest without residue. For example, Ukraine has more than 1.5 million hectares of bee-planted beet and the beetles have the most serious beetles. As a result of a serious outbreak in 1973, the ban on DDT was opened and sprayed several times by May 30 to meet the needs of DDT 70-80 days before the receipt of the use of the provisions. With drops