Diaphania perspectalis has 3 generations annually in Rugao City,overwintered by 1 or 2 instars larva of the third generation. The larva hibernates in the hibernaculum,which is a thin cocoon,whose outside is a bract of 2-3 Buxus sinica leaves after silking. It takes activities and damages by early March the next year. The larva peak of the first generation occurs from the end of May to early June. The second generation larva peak appears from middle of July to late July. The larva peak of the third generation appears within former twenty days of September,overwintering by middle or late October. Early May is the period of overwintering adult eclosion. The eclosion of overwintering generation and the first generation features obvious peak. The second generation eclosion period is long while it's eclosion peak is not obvious,and the eclosion ends in mid-October. The test resulted from forest control trial by 4 pesticides showed that the control effects of spraying 1. 1％ emamectin benzoate 2 000 times,2. 5％ beta-cyfluthrin 2 000 times,90％ crystal trichlorfon 1 000 times,were all more than 95％ after 5 days. Among them,emamectin benzoate and trichlorfon acted faster than beta-cyfluthrin. As a kind of bio-insecticide,emamectin benzoate is preferred in production.
Diaphania perspectalis(Walker)Occurrence ruleControl testRugao City
NETL
NSTL
维普
万方数据
