上海市植保所等应用95%的棉隆对棉花苗床土壤进行播前处理试验。设每平方米土壤施8、14、20克(依次记作1、2、3)三个处理,无药作 CK。结果:(1)20克处理后30～65天,土壤、根线虫量分别比 CK 下降95.6%、96.2%;处理2分别下降91.6%、92.9%;处理1分别下降83.1%38.6%.且处理3防效与处理1相比差异显著。(2)处理3的棉枯萎病发病率较 CK 下降88.9%,处理2、 Shanghai Plant Protection Institute and other applications of 95% cotton on cotton seedbed soil pre-sowing test. Set per square meter of soil applied 8,14,20 grams (followed by records 1,2,3) three treatments, no drug for CK. Results: (1) The soil and root-knot nematodes decreased by 95.6% and 96.2%, respectively, from 30 to 65 days after treatment with 20 g, decreased by 91.6% and 92.9% respectively in treatment 2 and decreased by 83.1% and 38.6% 3 control effect and treatment 1 significant difference. (2) The incidence of cotton blight in treatment 3 was 88.9% lower than that in CK,