论文部分内容阅读
1核桃举肢蛾1)危害症状。核桃举肢蛾以幼虫钻入核桃果内,纵横串食为害,被害果实发育不良、凹陷、干缩发黑,俗称核桃黑,常引起早期落果,严重影响核桃产量。一般阴坡较阳坡重,荒坡较耕地重,四面环山的洼地发生较重。该虫1年发生1代,以老熟幼虫在1～2cm深土内或树干老皮缝内作茧越冬,4月
1 walnut lure moth 1) endanger the symptoms. Walnut Ligustrum moths larvae walnut into the drill, the vertical and horizontal skewer food damage, fruit damage, depression, shrinking shrinkage, commonly known as walnut black, often lead to early fruit drop, seriously affecting the yield of walnut. In general, the shady slope is heavier than the sunny slope, and the wasteland is heavier than the cultivated land. The pest occurs 1 year in a generation, with mature larvae in 1 ~ 2cm deep soil or the trunk of the old skin cocoon for winter, April