玻璃药膜法、点滴法对虫螨磷与防虫磷毒力比较结果表明 ,虫螨磷对谷蠹、玉米象、杂拟谷盗和嗜卷书虱 4种主要储粮害虫的毒力比防虫磷大 1 .7～ 3.5倍。室内模拟药效试验结果表明 ,5ppm的虫螨磷与 2 0 ppm的防虫磷的效果基本相同 ,而使用剂量降低 3/4。生产试验结果表明 ,用 8ppm剂量的虫螨磷 ,无论以粉剂载体拌粮、全区喷洒拌粮 ,还是表层 30cm粉剂拌粮和喷哂拌粮 ,均取得 1 0个月无虫害发生的良好防虫效果。本试验以每隔一定时间向防护剂处理的粮食内投放试虫的方法评价防护剂的残效期。试验结果表明 ,以 8ppm剂量的虫螨磷处理的小麦对玉米象和谷蠹成虫的防治有效期基本相同 ,至少为 1 1个月 ;在 5ppm剂量下 ,对玉米象和谷蠹两种害虫防治效果不同 ,防治玉米象效果较好 ,对谷蠹较差。试验结果还表明 ,虫螨磷使用剂量小 ,残留少 ,对粮食污染小 ,在储粮害虫防治方面表现出良好的应用前景 The results of glass membrane assay and instillation assay showed that the virulence of insecticides Phosphatidylinositide against pest insecticidal Phosphatidylinositide was significantly higher than that of the control insects such as Rhizoctonia solani, Phosphorus big 1.7 ~ 3.5 times. Laboratory simulation results showed that the effect of 5 ppm insecticidal phosphorus was almost the same as that of 20 ppm insecticidal phosphorus, and the dosage was reduced by 3/4. Production test results show that, with 8 ppm dose of acaroid phosphorus, both in the powder carrier grain mix, the region spray mix, or the surface layer of 30cm powder mix grain and spray mixed grain, have achieved 10 months without insect pest good pest control effect. In this experiment, we evaluated the residual effect of the protective agent by applying test insects to foodstuffs treated with the protective agent at regular intervals. The test results showed that the control effect of the 8 ppm PPT on corn and adult adults was at least 11 months, and at 5 ppm, the control effect on the two pests, Different, prevention and treatment of corn like a better effect on the valley moth less. The test results also showed that the use of insecticides Phosphorus small doses, less residue, less food pollution, prevention and control of stored grain pests showed good prospects