桑橙瘿蚊危害后的桑园结构变化及相应管理  

STRUCTURE CHANGE AND ADEQUATE CONTROL OF MULBERRY FIELD HARMED BY MULBERRYGALL MIDGE(Diplosis mori Yokoyama)

作　　者：孙日彦[1] 樊孔彰[1] 王 林 郑素梅[1] 宋慧贞[1] 梁明芝[1] 

机构地区：[1]山东省蚕业研究所,临沂地区丝绸公司

出　　处：《蚕业科学》1995年第1期15-19,共5页ACTA SERICOLOGICA SINICA

摘　　要：桑瘿蚊危害后桑园结构发生了很大变化。桑树受害止芯后，继而生出若干侧枝呈帚状。桑叶密集于条高１．１—１．６米之间，通风透光性变差。叶面积系数可暂时增大。超过未受害区２０％以上。随之下部叶黄化脱落加快，收获叶量减少。五龄用叶期嫩叶比例增大，影响了叶质。受害后采取加强肥水管理，疏芽疏枝，增养夏蚕，继续查虫治虫，严防８月中旬第二次受害等措施，可以减少和避免损失。Great changes took place in the structure of mulberry field damaged by mulberrygall-midge.After terminal bud of the harmed mulberry stopped growing,the plant pro-duced many lateral branches in the shape of broom.The length of branch was between1.1 1.6 metres,the leaf distribution was dense.This led to poor ventilation and illumi-nation.The leaf area index seemed to grow large for a spell.It could be 20%higher thanthat of the unharmed mulberry field.Consequently,leaves of the lower portion grew yel-low and fell off earlier,leaf yield decreased.Besides,too many tender leaves were therewhile the larvae were at the 5th stage.The loss could be decreased or avoided by adopt-ing adequate measures such as:Strengthening mannuring and irrigation; Thinning budand branch; Rearing silkworm in summer to make good use of the lower leaves in time;Go on eliminating harmful insects to prevent mulberry from being damaged again afterthe middle of August.

关 键 词：桑树 害虫 桑瘿蚊 桑园结构 管理 

分 类 号：S888.739[农业科学—特种经济动物饲养] S888.4[农业科学—畜牧兽医]