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通过两年药剂拌种试验表明;用20%甲基异柳磷乳剂拌种防治甜菜象甲残效期长、效果好、全苗后第10天杀虫率达100%,第15天后达91.2%,保苗率达92.45%,增产16.2%,增糖1.1度,产糖量增23.7%;其次用35%甲基硫环磷乳剂,全苗后第10天杀虫率达85.5%,第15天达45.4%,保苗率90.3%,增产14.1%,增糖0.8度,产糖量增19.4%,因此,甲基异柳磷作为防治甜菜象甲的主要药剂应在生产上大面积推广应用,甲基硫环磷可作为搭配药剂使用,在操作过程中要求充分拌匀,以免降低药效。
After two years of seed dressing experiments showed that; with 20% methyl isoflavone seed dressing control sugar beetle long residual effect, the effect is good, the 10th day after the full-time insecticidal rate of 100%, after the first 15 days reached 91.2% , Seedling rate of 92.45% seedlings, an increase of 16.2%, sugar 1.1 degrees, sugar increased by 23.7%; followed by 35% methyl sulfur phosphorous emulsion, the 10th day after the whole plant insecticidal rate of 85.5%, the first 15 days Up to 45.4%, seedling protection rate of 90.3%, yield of 14.1%, 0.8% of sugar, sugar yield increased by 19.4%, therefore, methyl isofenphos as the main control sugar beetle should be in the production of large-scale promotion and application of a Sulfur sulfur phosphorus can be used as a collocation, in the course of the operation requires full mix, so as not to reduce the efficacy.