Effect of Non-pollution Insecticides on Pest Control of Red Early Crisp
This paper analyzes the specific control effect of non-pollution insecticides on red early crisp insect pest.The study site of red early crisp pear in Ganzhou District,Zhangye City,Gansu Province was selected for ex-perimental analysis,and the control effect of 5 kinds of non-pollution insecticides on red early crisp pear pest was determined.They were 22.4％spirulin ethyl ester suspension 3000 times,1.8％abamectin cream cream 2000 times,5％chloranthracide suspension 2500 times,45％thiacloprid suspension 6000 times,22.4％spirulin ethyl ester suspension 3000 times+5％chloranthracide suspension 2500 times,and blank control,respectively.The control effect was analyzed after the test.During the test,the application of each drug was relatively safe and reli-able.Analysis of the control effect of pear psyllid showed that the efficacy of treatments 1,2 and 3 were obvious at 3 and 7 days after treatment,and gradually decreased at 15 and 20 days after treatment.The long-term control effect of 22.4％Spirospira ethyl ester suspension 3000 times+5％chlorfenamide 2500 times was better than oth-er treatments.The effect analysis showed that the pest reduction rate and control effect of 22.4％spirulus ethyl es-ter suspension 3000 times+5％chlorobenzamide 2500 times at different administration stages were better than other agents(P＜0.05),and the effect reached the peak at 15d of administration.The analysis of the number of caries and the rate of caries showed that treatment 5 had the lowest number of caries and the lowest rate of caries,both lower than other treatments(P＜0.05).For the common insect pest of red early crisp,the best control effect is 2.4％spirospira ethyl ester suspension 3000 times+5％chlorobenzamide 2500 times.
non-pollution insecticidesred early crisppear psyllidSpirulina ethyl ester suspension
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