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Your Position :Home->Past Journals Catalog->2010年47 No.1

Investigation of the occurrence dynamics of Evergestis extimalis
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Key Words:Evergestis extimalis, occurrence dynamics, investigation
Abstract:     The investigation showed that the overwintering larvae Evergestis extimalis Scopoli pupated from early June in the rape fields of Qinghai. The pupation rate was 80% in midJune, and 100% in late June. Adults emerged from early July, and it reached the peak on 15th~20th of July. From late June to early July, females began laying eggs, and it reached the peak in midJuly. The average mortality of overwintering larvae was 96.63% result shown that in the rape planted fields via and study.
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