松墨天牛是松材线虫病最主要的传播者 ,而该虫属钻蛀性隐蔽害虫 ,成虫虽外出活动 ,但分散、活动较强 ,而卵和小幼虫在皮层与木质部间 ,相对来说较易防治。经试验测得卵期 6.8～ 1 0 .8d,发育起点温度为1 4.3± 0 .86℃ ,有效积温为 1 0 1 .2 1± 6.97DD,预测式为 N=( 1 0 1 .2 1± 6.97) /[T-( 1 4.3 0± 0 .86) ],这为防治小幼虫提供了时间依据 Monochamus alternatus is the most important disseminator of pine wood nematode disease, while the insects are moth-eaten hidden insect pests, although the adults out activities, but scattered, strong activity, and eggs and small larvae in the cortex and xylem, the relative Said easier to control. According to the test, the egg period 6.8 ~ 1.08d, the development starting temperature is 1 4.3 ± 0.86 ℃, the effective accumulated temperature is 1 0 1 .21 ± 6.97DD, the prediction formula is N = (1 0 1 .2 1 ± 6.97) / [T- (1 4.3 0 ± 0.86)], which provided the basis for the control of young larvae