银杏新害虫─豆荚螟银杏向以病虫害绝少而闻名，但笔者在山东郯城县发现豆荚螟Ｅｔｉｅｌｌａｚｉｎｃｋｅｎｅｌｌａ（Ｔｒｅ－ｉｔｓｃｈｋｅ）为杏银杏果实和核仁，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。豆荚螟以第２代幼虫... New ginkgo pests ─ bean pod Ginkgo biloba to pests and diseases rarely known, but the author found in Tancheng County, Shandong pod borer Etiellazinckenella (Tre-itschke) is the apricot ginkgo fruit and kernels, kernels of ginkgo fruit were all eaten light, species Insect excrement only left the kernel, seriously affecting the yield and quality of ginkgo species. Pod borer to the 2nd generation larvae ...