| Carposina niponensis Walsingham is an important pest in fruit trees and had ever damaged the quality of fruits heavily,which influenced fruit exports of our nation and led to economic loss. Therefore,the prevention and cure of Carposina niponensis Walsingham had all along been an indispensable job in production of fruits . This paper investigated Carposina niponensis Walsingham from breed method,insecticide susceptivity,physiology,biochemistry and control techniques.The results could be summarized as followings.1. Breeding Carposina niponensis Walsingham in apple,influences of 11,13,15,17,19 hours'illumination to some primary biological characteristics were studied at 25±1℃and R.H.60～70%.The results showed that larval weight,eclosion rate,oviposition capacity and hatch rate were all at the peak,the larval diapause rate was lowest,and the development state of Carposina niponensis Walsingham was optimal in above condition and no biological degenerate ion appeared when breeded to seven generation.With breeding method in apple,larval weight,pupal weight,leaving rate,oviposition capacity and hatch rate were increased compared with method of artificial forage,which indicated that Breeding Carposina niponensis Walsingham in apple was feasible at the same time.This method was be likely to providing experimental insects of approaching natural state for research work of Carposina niponensis Walsingham.2. The toxicities of triazophos,phoxim,lambda-cyhalothrin,malathion,chlorpyrifos and abamectin to Carposina niponensis Walsingham wre tested by impregnating method.The results showed that the susceptivities of overwintered larvae were 34.50,16.71,5.90,3.89,3.28 and 2.73 times as much as that of pre-overwinteing larvae , and the susceptivity of overwintered larvae improved evidently.Furthermore,the toxicities of thirteen insecticides to the overwintered larvae were tested by toxic soil and the results... |
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