摘要
应用频次分布检验法、Taylor幂法则、Iwao的 m -m回归方程及聚集度指标测定和分析了稻象甲成虫的空间分布型。结果表明 ,稻象甲成虫在田间呈聚集分布 (普通的负二项分布 ) ,分布的基本成份为疏松的个体群 ,个体群面积为 0 .0 98～ 0 .1 6 3m2 ,聚集原因是由环境引起的。
By means of frequency distribution test,Taylor's power law,Iwao's -m regression equation and contagiousness indexes,the spatial distribution pattern of adult of Echinocnemus squameus was determined and analyzed,the results indicate that the spatial pattern of this insect is aggregated distribution (common negative binomial distribution),the basic component of distribution is loose colony,the area of colony is 0.098～0.163m\+2,the aggregation results from the field environment. As far as three equations for data transformation are concerned,Iwao's equation has the best effect.\;
出处
《江西农业学报》
CAS
2000年第4期30-35,共6页
Acta Agriculturae Jiangxi
关键词
稻象甲
成虫
空间分布型
资料代换
水稻害虫
Echinocnemus squameus
Adult
Spatial distribution pattern
Data transformation
