桑橙瘿蚊发生规律及其控制技术

查明我国桑橙瘿蚊的分布在苏、浙、鲁、皖、赣、粤、桂、云、贵、川、陕、渝等省 (市 )。桑橙瘿蚊在长江以北地区年发生 5～ 6代 ,幼虫发生在 6～ 10月 ;长江以南地区年发生 6～ 7代 ,其幼虫在 5～ 10月发生为害。根据桑橙瘿蚊发生为害规律和养蚕布局 ,提出了重点防治夏秋季为害严重的 2～ 5代幼虫 ,抑制 6～ 7代虫口密度的策略和以土壤杀虫剂防治为主的综合控制技术。

The Occurrence Law and Control Technique of Mulberry Gall-Midge (Diplosis mori Yokoyama)

It is revealed that the mulberry gall-midge (Diplosis mori Yokoyama) distributes in Jiangsu, Zhejiang, Shandong, Anhui, Jiangxi, Guangdong, Guangxi, Yunnan, Guizhou, Sichuan, Shaanxi and Chongqing provinces and city. Mulberry gall-midge occurs 5-6 generations in a year in the north of the Yangtze River and the larvae occurs from June to October, while it occurs 6-7 generations yearly in the south of the Yangtze River and its larvae harms mulberry from May to October. Based on the occurrence law of the mulberry gall-midge and overall arrangement for silkworm rearing, the systematic control technique, which is to emphatically control the 2nd-5th generations mulberry gall-midge larvae in summer and autumn and restrain the population density of the 6th-7th generations larvae, and mainly use soil insecticide in chemical control, was put forward in this paper.