%0 Journal Article
%T Control effect of natural enemies on Plutella xylostella under ecological restoration condition<br>生态恢复状态下天敌对小菜蛾的自然控制作用
%A CHEN Kewei
%A HUANG Shoushan
%A HE Yurong
%A <br>陈科伟
%A 黄寿山
%A 何余容
%J 应用生态学报
%D 2006
%I 
%X A field study on the life table of diamondback moth(DBM)Plutella xylostella showed that the population increase index of DBM in chemical control plot was 52.52,while that of four continuous generations of DBM in ecological restoration plot was 16.9,7.16,3.71 and 4.02,respectively,indicating that the control effect of natural enemies on target pest was greatly improved.The main factor affecting the first and forth generations of DBM was the parasitism of Cotesia plutella,while those affecting the second and third generations of DBM were the predator of the 4 th instar larva and the parasitism of Trichogramma,with the corresponding exclusive index of population control(EIPC)being 1.39,1.54,1.56 and 1.74,respectively.There was an obvious time lag effect of natural enemies on their target pest,and thus,to protect and multiply the population of natural enemies in the field should be the key point of fully exerting the potential of natural enemies in their pest control.
%K Plutella xylostella
%K Natural enemy
%K Natural control<br>小菜蛾
%K 天敌
%K 自然控制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=5BD7A5605039A756&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=F3090AE9B60B7ED1&sid=EECD17CB3E221F65&eid=9C05DE753E92F503&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=1&reference_num=16