砂生槐种子害虫危害损失率及防治指标研究  

Study on the Yield Loss and The Control Index of Sophora moorcroftiana Seed Pests

作　　者：王文娟[1] 唐小琴[1] 孟长军[2] 巩文峰[1] 

机构地区：[1]西藏农牧学院,西藏林芝860000 [2]西安文理学院生命科学系,陕西西安710065

出　　处：《北方园艺》2012年第2期143-145,共3页Northern Horticulture

基　　金：211工程师资队伍建设资助项目(SZRC-211-09);西藏自治区地区基金资助项目

摘　　要：采用人工罩笼、定量接虫的方法,分别研究了砂生槐2种种子害虫的虫口密度与砂生槐种子产量损失之间的关系及其防治指标。结果表明:随着接虫量的增加,虫食率和虫荚率也随之增加,产量则随之下降,砂生槐种子产量损失率(Y)与豆荚螟和刺槐种子小蜂虫量(X)的关系分别为Y=6.2864+8.6907X,Y=5.1611+8.4325X,相关系数r分别为0.9792和0.9830,显示了砂生槐种子产量损失率和2种害虫的虫量相关性极显著。同时得到豆荚螟和刺槐小蜂单种种群防治指标分别为0.1140对/株和0.2509对/株。Using artificial covering cage and quantitative pest, the control index and the relationship between the density of Sophora moorcroftiana seed pests and its seed yield losses were studied. The results showed that the percentage of damaged seeds and the injured pods will increase and the seed yield will decrease with the increase of the number of pest quantity. The relationship between the loss rate of seed yield（Y） and the number of Etiella zinckenella （X） was Y=6. 2864＋8. 6907X,and the relationship between the loss rate of seed yield（Y） and the number of Bruchophagus onois （X） was Y = 5. 1611 ＋ 8. 4325X. The correlation coefficients were 0. 9792 and 0. 9830 separately. It showed a very significant correlation between the loss rate of Sophora moorcroftiana seed yield and the number of the two kinds of pests. And the control index of the individual species of Etiella zinckenella and Bruchophagus onois were 0. 1140 pair per plant and 0. 2509 pair per plant separately.

关 键 词：砂生槐种子 豆荚螟 刺槐小蜂 产量损失 防治指标 

分 类 号：S793.9[农业科学—林木遗传育种]