桑蓝叶虫成虫空间分布型及抽样技术研究  

Study on Spatial Distribution Pattern and Sampling Technique of Phyllobrotica armata Baly in the Mulberry Field

作　　者：张正新[1] 钟勇玉[1] 肖乃康[1] 李玉平[1] 薛三勋[1] 

机构地区：[1]陕西省蚕桑丝绸研究所,周至710400

出　　处：《蚕业科学》2001年第2期141-144,共4页ACTA SERICOLOGICA SINICA

摘　　要：通过田间调查 ,对春伐桑园中的桑蓝叶虫的空间分布型、分布图式进行了分析。结果证明 :桑蓝叶虫的空间分布型 80 %符合负二项分布 ,70 %符合Neyman分布 ,不符合Poisson分布 ;空间分布图式为聚集型。序贯抽样方程为 :T1(q) =3q + 4.5 5 41q ,T2 (q) =3q - 4 5 5 41q。Analysis on the spatial distribution pattern and distribution diagram of Phyllobrotica armata Baly in spring pruning mulberry field were carried out through field investigation.The results revealed that 80% of the spatial distribution pattern of the Phyllobrotica armata Baly conformed to negative binomial distribution,70% conformed to Neyman distribution and not to Poisson distribution.Spatial distribution diagram is aggregate.The forum for sequential sampling is: T1(q)=3q+4.5541q,T2(q)=3q-4 5541q

关 键 词：桑蓝叶虫 空间分布 序贯抽样 桑树害虫 

分 类 号：S888[农业科学—特种经济动物饲养]