稻粉虱若虫空间分布型和抽样技术的研究  

STUDY ON THE SPATIAL DISTRIBUTION PATTERN AND SAMPLING TECHNIQUE FOR NYMPHAE OF ALEUROCYBOTUS INDICUS IN RICE FIELD

作　　者：魏美玉[1] 赵士熙[2] 

机构地区：[1]福建省霞浦县植保站,霞浦355100 [2]福建农林大学植物保护学院,福州350002

出　　处：《武夷科学》2002年第1期146-150,共5页Wuyi Science Journal

摘　　要：稻粉虱若虫空间分布型测定结果表明 :(1)频次分布检验结果为负二项分布和核心分布 ;(2 )聚集度指标测定为聚集分布 ;(3) Iwao的线性回归方程为 m* =0 .76 5 5 + 1.6 778m,属于聚集分布。在空间分布型研究基础上 ,探讨了资料代换模式。The spatial distribution pattern for nymphae of Aleurocybotus indicus In rice field was determined. The results are follows: (1) It belongs to the negative binomial distribution and contagious distribution by means of test of frequency distribution. (2) It falls under the pattern of the aggregated distribution by the useof aggregation indices. (3) Iwao's linear regression equation is m *=0.7655+1.6779m, so it belongs to the general negative binomial distribution.Then, the model of data conversion, Iwao's model of the population sequential sampling and the theoritical sampling number model of field survey were also discussed.

关 键 词：稻粉虱若虫 空间分布型 抽样技术 

分 类 号：S435.112+.3[农业科学—农业昆虫与害虫防治]