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采用苗前土壤处理和苗后茎叶处理,研究了不同剂量的30%咪草烟.广灭灵乳油防除春大豆田杂草田间药效,并检验其不同剂量下对大豆的安全性。结果表明:土壤处理适宜施用量为1.65~2.70 L.hm-2,在此剂量下对大豆安全,而茎叶处理适宜施用量为1.35~1.65 L.hm-2,在此剂量下对大豆安全。此药剂在茎叶处理使用时除草效果明显,用药量少于土壤处理所需量,能降低成本,节省开支。
The effects of different doses of 30% imazethapyr were studied using pre-emergence soil treatment and post-emergence stem-leaves treatment, the efficacy of guanculing cream in controlling weeds in spring soybean field was tested, and the safety of soybean seedlings at different doses was tested. The results showed that the suitable application rate of soil treatment was 1.65 ~ 2.70 L · hm -2, which was safe for soybean at this dose and 1.35 ~ 1.65 L · hm -2 for stem and leaf treatment, . This medicament has obvious herbicidal effect when used in the treatment of stems and leaves, and the dosage is less than that required for soil treatment, which can reduce the cost and save the expenses.