由于仓用杀虫剂的普遍、长期使用,储粮害虫对某些药剂的抗性成倍上升。在有些情况下,单一PH_3、CCl_3NO_2熏蒸对高抗性的储粮害虫(如谷蠹、赤拟谷盗等)毒杀率低,死亡率低于80％。为了克服其抗性,我们采用轮换使用化学药剂混合熏蒸等方法,但收效甚微。自1998年起,我们在基层收储公司,根据仓储设施差的特点,结合“双低”储粮的优点在房式仓进行克服储粮害虫抗性的实验,收到了较明显的效果。 Due to the widespread and long-term use of pesticides in warehouses, the resistance of stored grain pests to certain medicaments has doubled. In some cases, the single PH_3 and CCl_3NO_2 fumigation had lower toxicity and mortality rate of less than 80% for the highly resistant grain-stored pests such as Rhizoctonia solani and Trichosanthes. In order to overcome its resistance, we use a mixture of chemical fumigation and rotation methods, but with little success. Since 1998, we have collected and stored companies at the grassroots level. According to the characteristics of poor storage facilities and combined with the advantages of “double-low” grain storage, we have tried to overcome the pest resistance of stored grain crops in the warehouse to receive more obvious results.