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银杏大蚕蛾在陕南1年发生1代,以卵在核桃树皮缝内越冬,翌年4月中下旬开始孵化。初孵幼虫群集危害,3龄后向四周扩散,4～6龄为暴食阶段,是危害严重时期。幼虫食尽核桃树叶后,还转而取食板栗、漆树、杜仲、椿树等其他树叶。幼虫6月上中旬在树下灌木丛中缀叶结茧化蛹。9月下旬至10月中旬成虫羽化交尾、产卵于核桃树皮缝内。幼虫孵化期用赛丹或菊酯类杀虫剂常规喷雾,防效均在90%以上。
Ginkgo Bombyx mori in southern Shaanxi occurred 1 generation a year, the eggs in the bark of walnut bark wintering, hatch in late April the following year. The newly hatched larvae cluster harm, spread to the four weeks after the third instar, 4 to 6 years of gluttony stage, is a period of serious harm. Larvae exhausted walnut leaves, but also turn to eat chestnut, paint tree, Eucommia, toon and other leaves. Larvae in mid-June in the shrubs under the tree cocoon foliage cocoon pupation. From late September to mid-October adult insects mating, spawning in the bark of walnut. The larvae hatching period with Dan or pyrethroid pesticides conventional spray, control effect is above 90%.