摘要
在黄瓜大田研究了不同防治措施对烟粉虱种群数量和黄瓜产量的影响。自然控制区烟粉虱种群趋势指数为11.4599。由于烟粉虱对有机磷杀虫剂具有强烈的抗药性和杀虫剂对天敌的杀伤作用,化学防治区烟粉虱出现大量发生和猖獗危害现象,烟粉虱种群趋势指数达到13.6220。生态控制区烟粉虱种群趋势指数为0.3365,实现了烟粉虱种群数量的控制。自然控制区、化学防治区和生态调控区黄瓜产量分别为0.1117、0.1017和1.0816kg/株。
An experiment was carried out in the cucumber field, the results showed that the index of population development trend(I-value) of B. tabaci in the natural control area was 11.459 9. Because of the resistance of B. tabaci to organophosphorous insecticides and insecticides' harmfulness to the natural enemies, the population of B. tabaci was more resurgent in the chemical control area than that in the control area, I-value of B. tabaci in the chemical control area reaches 13.6220. In the ecological control area, I-value of B. tabaci was only 0.336 5.The cucumber outputs in the natural control area, chemical control area and ecological area were 0.111 7, 0.101 7 and 1.081 6 kg/per plant respectively.
出处
《江西农业大学学报》
CAS
CSCD
2003年第5期728-731,共4页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家"十五"攻关项目(2001BA509B0604)
广东省自然科学基金资助项目(010312)
广东省科委资助项目(9622035-02)
关键词
防治措施
烟粉虱
种群
黄瓜
产量
control measure
Bemisia tabaci
cucumber output
