摘要
应用聚集度指标和Ｍ－Ｘ回归检验，得出稻粉虱若虫空间分布型为聚集分布型，以５种取样方法与对照相比较，差异均不显著；但以棋盘式、平行线取样接近对照，且平行线取样方便易行，可采用。抽样量ｎ＝６２．９６８４Ｘ＋２０．０２７０，序贯抽样模式为Ｔ０（Ｎ）＝２５Ｎ±５８．０１１７Ｎ。
Using the indices of aggregation and the regression test of M *-, We concluded that the spatial pattern of the nymph of Aleurocybotus indicus David et Subramaniam was aggregated dispersion. Comparing 5 sampling methods with the contrast, the difference between every method and the contrast wasn't marked, but the sampling of chessboard and parallel were most close to the contrast, parallel sampling was easy to use and could be used, the formula of sampling quantity is n=62.9684+20.0270. The model of sequential sampling is T 0(N)=25N±58.0117N.
出处
《江西农业学报》
CAS
1999年第1期56-59,共4页
Acta Agriculturae Jiangxi
关键词
稻粉虱若虫
空间分布型
取样
水稻
Aleurocybotus indicus David et Subramaniam
Nymph
Spatial pattern
Sampling technique
