高巧与氟虫腈混合剂种子包衣对萝卜虫害的防效及增产效果研究

Studies on Pest Control and Yield Effects by Coating Radish Seed with the Mixture of 60% Gaucho and 8% Fipronil

为实现萝卜生产的安全性和经济性,试验以8%氟虫腈种衣剂与60%高巧种衣剂为研究对象,探讨了2种药剂的混合剂种子包衣对萝卜虫害的综合防效,并评价其对萝卜生长和产量的影响。结果表明,8%氟虫腈种衣剂与60%高巧种衣剂的混合剂种子包衣处理(处理1)的出苗率较施用10%毒死蜱(处理2)、对照(处理3)分别高6.3和12.2个百分点,苗期叶片虫害发生率分别降低39.9%和46.9%,根部遭受虫害的危害率为零,根畸形率明显低于处理2和处理3。萝卜收获时发现,处理1叶片虫害发生率、根部遭受虫害的危害率、根畸形率较处理2、处理3分别降低43.2%和46.1%、83.5%和87.2%、71.9%和83.3%,产量较处理2和处理3分别提高8.5%和11.5%。

To achieve the safety and economy of the radish production,8% fipronil seed coating agent and 60% gaucho seed coating agent as the research objects,pests integrated control effect was discussed by coating seed with the mixture of two kinds of medicament,and the influence on the growth and yield of radish was evaluated. The results showed that the emer-gence rate,the morbidity rate of pests of leaf in seedling of coated treatment （treatment 1） was 6.3 and 12.2 percentage point,39.9% and 46.9% higher than 10% chlorpyrifos applied （treatment 2） and CK,respectively. The damage rate to root of treatment 1 was zero,and the malformation root rate of treatment 1 was obviously lower than treatment 2 and CK. In harvest, the morbidity rate of pests of leaf,the damage rate to root and the malformation root rate of treatment 1 were 43.2% and 46.1%、83.5% and 87.2%、71.9% and 83.3% lower than treatment 2 and CK, respectively. But the yield of treatment 1 was 8.5% and 11.5% higher than treatment 2 and CK, respectively.