论文部分内容阅读
经室内自然变温条件下 ,对华山松木蠹象各虫态的发育起点温度和有效积温进行测定。据此 ,分别提出该虫卵、幼虫、蛹和一世代的有效积温预测式 :卵N =12 4 15± 2 5 77/〔T - (9 83± 2 6 4)〕 ,幼虫N =2 0 1 86±5 6 3/〔T - (19 5 8± 0 86 )〕 ,蛹N =2 5 5 71± 39 14/〔T - (12 0 6± 1 41)〕 ,一世代N =5 2 2 14± 14 5 8/〔T -(19 38± 0 87)〕。本研究为有效防治华山松木蠹象提供科学依据
Under the condition of natural indoor temperature, the developmental threshold temperature and effective accumulated temperature of Pterocarya stenoptera were determined. According to the results, the predicted effective accumulated temperature of the eggs, larvae, pupae and the first generation were respectively proposed: egg N = 12 4 15 ± 2 5 77 / [T - (9 83 ± 2 6 4)], larva N = 20 1 86 ± 5 6 3 / 〔T - (19 58 ± 0 86)〕, pupa N = 25 71 ± 39 14 / [T - (126 ± 1 41)〕, one generation N = 52 2 14 ± 14 5 8 / [T - (19 38 ± 0 87)]. This study provides a scientific basis for the effective prevention and treatment of Pinus armandii