【摘要】 束管食螨瓢虫（ＳｔｅｔｈｏｒｕｓｃｈｅｎｇｉＳａＳａｊｉ）和枯金爪螨（ＰａｎｏｎｙｃｈｕｓｃｉｌｒｉＭｃＧｒｅｇｏｒ）两种群的空间格局均为聚集分布．根据Ｉｗａｏ等（１９６８）的最适理论抽样方法和Ｍｏｗｅｒｙ等（１９８０）的二阶抽样法分别对束管食螨瓢虫和枯全爪螨的抽样技术进行了研究；并在此基础上．对两种种群抽样技术进行配合，提出了混合种群抽样技术，得出了两物种混合抽样模型．更多还原

【Abstract】 Aggregation distribution was observed in a study of the spatial pattern of Stethorus chengi SaSaji and Panonychus citri MeGregor in citrus orchards. Based on sampling teehniques for the ladybug by the method of insect optimum sampling presented by Iwao.S(1968)and the red mite by the method of second-class sampling by Paul.D.Mowery et al.(1980),respectively,the paper discussed the sampling technique for the mixed population and its sampling model更多还原