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

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

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

Author(s):: WANG Wen-juan¹; TANG Xiao-qin¹; MENG Chang-jun²; GONG Wen-feng¹; 1.Tibet Agricultural and Animal Husbandry College,Linzhi,Tibet 860000;
?2.Department of Life Science, Xi’an University of Art and Science, Xi’an, Shaanxi 710065

Keywords:: Sophora moorcroftiana seed; Etiella zinckenella; Bruchophagus onois; yield loss; control index

Abstract:: 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= 62864+86907X,and the relationship between the loss rate of seed yield(Y) and the number of Bruchophagus onois (X) was Y= 51611+84325X.The correlation coefficients were 09792 and 09830 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 01140 pair per plant and 02509 pair per plant separately.

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Last Update: 2014-08-24