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为了探索硅藻土防治储粮害虫的经济有效剂量、防治方法和条件等,本方设计了不同温度和湿度组合,不同的硅藻土剂量分别对生活在小麦和稻谷中的谷蠹和长角扁谷盗的毒力试验,结果表明:在相同的条件下(1)硅藻土对小麦的防护优于对稻谷的防护。(2)在25℃时对谷蠹的防效高于30℃的防效,对长角扁谷盗则相反。(3)硅藻土的防治效果随着相对湿度的降低而提高。(4)长角扁谷盗对硅藻土的敏感度是谷蠹的5￣6倍。在应用时从经济、有效的原则考虑,建议防治以谷蠹为主要害虫的储粮时以400mg/kg的剂量,防治长角扁谷盗时则以70mg/kg即可。
In order to explore the economical and effective dosage of diatomite to prevent and control stored grain pests, the methods and conditions for prevention and control of diatomite were designed. Different temperature and humidity combinations were designed in this paper. The results showed that under the same conditions, (1) diatomaceous earth is superior to wheat in protecting the rice. (2) At 25 ℃, the control effect on Rhizoctonia solani was higher than that of 30 ℃, but opposite to that of Longhorn flatbread. (3) The control effect of diatomite increased with the decrease of relative humidity. (4) The long-angle flat valley steal the sensitivity of diatomite is 5 to 6 times the grain moth. In the application from the economic and effective principles to consider the prevention and control of grain beetles as the main pest storage grain at a dose of 400mg / kg, when the prevention and control of long-angle flat-bottomed Pirates then 70mg / kg can be.