会泽新松叶蜂生物学特性及防治

会泽新松叶蜂是华山松的主要食叶害虫。该虫在会泽县者海林场 1年发生 2代 ,以老熟幼虫在树冠周围的枯枝落叶层中结茧越冬。第 1代 3月下旬为产卵盛期 ,6月中旬～ 8月中旬为蛹期 ,7月中旬～ 8月中旬为成虫期 ;第 2代 7月下旬～ 9月上旬为卵期 ,11月上旬～次年 3月中旬为蛹期 ,3月中旬～ 4月下旬为成虫期。根据其生物学特性及生活习性 ,提出了综合防治措施。化学防治以 4 0 %氧化乐果 1∶80 0倍液最好。室内和田间对幼虫喷药的防治效果在 90 %以上

Biological Characteristics and Control of Neodiprion huizeensis

Neodiprion huizeensis is the main defoliator of Pinus armandi, the pest occurs two times per year, old adults live in the litters around crown of the harmed tree through the winter The spawning time, pupa period and adult period of the first generation were the last ten days of March, the middle of June to the middle of August, and the middle of July to the middle of August respectively That of the second generation were the last ten days of July to the first ten days of September, the first ten days of November to the middle of the next March, and the middle of March to the last ten days of April respectively Control measures of this pest were proposed based on the study of its biological characteristics The recommended chemical was 40% omethoate diluted by 800 times, the control effect in forest could be over 90%