沙雅县天然胡杨林春尺蠖发生规律的初步研究

春尺蠖在沙雅县1年发生一代,以蛹在树冠下土壤中越夏、越冬.第二年3月当地表5～10cm深处土壤温度在0℃左右时,成虫开始羽化出土.卵于4月上旬开始孵化,整个卵的孵化进度呈明显的Logistic曲线,其方程式为:N=100/(1+e6.6255-1.234 3t).该虫的防治时期是4月10～25日,最佳防治时期是4月15～20日,采用飞机低容量喷雾可收到较好的防治效果.

The Preliminary Study on Occurrence of Apocheima Cinerarius Erschoff in Natural Poplar of Shaya County

Apocheima cinerarius Erschof had a generation in a year in Shaya County . It overwintered and oversummered with the pupae in the soil under tree crown. The adults began to emerge from soil when the temperature was in 5～10cm and 0℃ under depth of soil in March of the following year.The egg incubation of Apocheima cinerarius Erschoff happened in the first ten-days of April. A Logistic equation (N=100/(1+e~(6.625 5-1.234 3 t)) was fitted according to the whole hatching processing . The control period was April 10～25 among which the best one was April 15～20. Sound excellent control effect was obtained by airplane LV spray.