摘要
为了给碧蛾蜡蝉的防治、准确预报其发生情况提供参考,主要进行了茶碧蛾蜡蝉着卵分布调查,采用聚集度指标法、回归模型法测定了碧蛾蜡蝉卵在茶园的空间分布格局。根据空间分布型的参数,分别探讨了Iwao、Willson的2种序贯抽样方法。结果表明:碧蛾蜡蝉卵在茶园呈聚集分布,根据Blackith提出的分析方法,认为聚集分布原因是昆虫自身行为引起。Iwao序贯抽样法需调查64株(1块卵的误差)或256株(0.5块卵的误差)才能最后确定茶园卵块密度,而Willson序贯抽样法只需调查10株即可确定茶园卵块密度。研究结果可为准确抽样调查和防治提供参考依据。
In order to supply the reference for controlling and precisely predicting the occurrence of Geisha distinctissima Walker,spatial distribution of the eggs in tea garden was detected by using the dispersal indices and Iwao regression approaches.In addition,according to the sampling equations,Iwao and Willson sequential sampling were researched.The results showed that the eggs in the tea garden was in aggregative patterns of spatial distribution.Such patterns were resulted mainly from the Geisha distinctissima Walker＇s biological characteristics.And the sample number was 64 and 256 by Iwao sequential sampling,but the sample number was only 10 by Willson sequential sampling.The study are helpful to further research and control.
出处
《中国农学通报》
CSCD
2012年第25期213-218,共6页
Chinese Agricultural Science Bulletin
基金
贵州省科技厅农业攻关项目"茶树重要病虫害无公害防除技术研究与推广"(黔科合字NY字[2010]3024)
关键词
茶园
碧蛾蜡蝉
越冬卵
空间分布型
抽样技术
tea garden
Geisha distinctissima Walker
overwinting eggs
spatial distribution
sampling technique
