论文部分内容阅读
针对小麦仓中下层局部生虫 ,采用粮堆局部处理机环流熏蒸 ,分两次投药 ,共计熏蒸处理时间为两周。实验证明 :在处理部位PH3浓度 1 0 0～ 30 0 ppm可以保持 1 2天左右 ,粮堆中的害虫全部杀死 ;经检查埋入粮堆的赤拟谷盗、谷蠹和玉米象 ,成虫死亡率 1 0 0 % ,对虫粮培养 4 2天后 ,检查F1代为零。
For the middle and lower part of the wheat farms local worms, grain processor local circulation fumigation, divided into two doses, a total of fumigation treatment time of two weeks. Experiments show that: in the treatment site PH3 concentration of 100 ~ 30 0 ppm can be maintained for about 12 days, all the pests in the grain piles were killed; after inspection buried in the grain heap Tribolium, Valley borer and corn, adult The mortality rate was 100%. After culturing the parasite for 42 days, check the F1 generation for zero.