期刊论文

中文

安徽农业科学

0517-6611

2008

36

30

13248-13249,13341

10.13989/j.cnki.0517-6611.2008.30.122

国家星火计划项目（200378013001）； 国家公益性行业（农业）科研专项项目（nyhyzx07-007）；

本校为其他机构

[目的]研究青花菜上桃蚜种群数量及其天敌动态。[方法]选择有代表性的地块,调查青花菜和其他寄主上有翅桃蚜、无翅桃蚜和天敌数量并加以分析。[结果]桃蚜可以在小白菜、菊花、萝卜和青花菜等作物上互相转移为害。在11月中旬以前桃蚜保持较低密度,11月中旬以后随着温度的降低,其数量显著增多,至12月上旬其数量达到高峰;天敌共有6科11种,其中六斑月瓢虫、菜小脉茧蜂为优势种;随着桃蚜种群的增加,天敌数量逐渐增加,具有明显的跟随效应;将桃蚜数量与天敌数量进行回归分析,桃蚜数量与天敌数量显著正相关。[结论]佛山青花菜种植区桃蚜发生高峰期为11月至12月间。

[ Objective] The number of green peach aphid populations in broccoli and the dynamics of their natural enemy were researched. [ Method] The representative plot was chosen as experimental areas to investigate broccoli growth and the species of green peach aphids and natural enemies and the result was analyzed. [ Results ] The green peach aphids might move from Chinese cabbage, chrysanthemum, radish, broccoli to other crops each other and the harm could be caused.Before the mid-November, the green peach aphid maintained lower density; after the mid-November, as the temperature reduced, their num...