银杏新害虫—百荚螟豆荚螟以第二代幼虫危害银杏果实和核仁。被害银杏果实的核仁全部被食光，种核内只留下虫粪，严重影响银杏种实的产量和质量。该虫５月下旬第二代幼虫孵化后，先吐丝结网隐蔽其内，取食银杏果实，随后钻入种核危害。一头幼虫一生只取食一个种核。７月底... New ginkgo pest - Hundred pod borer pod borer to second-generation larvae damage ginkgo fruit and kernels. Ginkgo fruit kernels were all eaten light, the kernel only leave insect excrement, seriously affecting the yield and quality of ginkgo species. After the second generation of larvae hatch in late May, the silkworm nets first conceals its inside, feeding on the ginkgo fruit, then drilling into the seed kernel damage. A larvae eat only one species of seed throughout his life. By the end of July ...