摘要
1993～1995年,对青杨虎天牛主要测报指标进行了研究。通过虫期发生量预测式,预测不同虫态的发生量,所预测的幼虫和成虫发生盛期与实查结果基本吻合。
Main forecasting indexes of Xylotrechus rusticus were studied in Baishishan Forestry Bureau from 1993 to 1995.Based on the forecasting equation, the occurrence amount of this pest was calculated in different metamorphosis phases. It indicates that mathematical forecasting tallies with the practical survey to outbreak stages of the larva and adult.
出处
《吉林林业科技》
2003年第2期10-13,共4页
Journal of Jilin Forestry Science and Technology
