[不同季节黄瓜植株上烟粉虱自然种群生命表]

[Life table of natural Bemisia tabaci population on cucumber plants in different seasons].

作者信息

Shen Binbin, Chen Chao, Ren Shunxiang

机构信息

Department of Entomology, College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China.

出版信息

Ying Yong Sheng Tai Xue Bao. 2005 Dec;16(12):2473-5.

PMID:16515210

Abstract

The study showed that in the early growth stage of cucumber in spring, the predation on Bemisia tabaci egg was the key factor for controlling B. tabaci population, and the exclusion index of population control was 1.7333. In the late growth stage of cucumber in spring, summer and autumn, the predation on B. tabaci elder nymph was the critical factor for controlling B. tabaci population, and the exclusion index of population control was 4.5372, 4.0429 and 7.9021, respectively. From spring to autumn, the index of population development trend was decreased from 21.0610 to 5.8523, because of the increasing controlling effect of the predators, and the exclusion index of population control was from 4.0560 to 17.8662.

摘要

研究表明，在春季黄瓜生长前期，对烟粉虱卵的捕食是控制烟粉虱种群的关键因素，种群控制排除指数为1.7333。在春季、夏季和秋季黄瓜生长后期，对烟粉虱高龄若虫的捕食是控制烟粉虱种群的关键因素，种群控制排除指数分别为4.5372、4.0429和7.9021。从春季到秋季，由于捕食者控制作用增强，种群发展趋势指数从21.0610降至5.8523，种群控制排除指数从4.0560增至17.8662。