松扁叶蜂卵的空间分布和抽样技术的研究

探讨了松扁叶蜂卵在松树上的分布型。用Ｉｗａｏ的回归方程、Ｔａｙｌｏｒ幂法则和四项聚集指标测定结果表明，该虫的卵在松树的不同层次和方位上均属于随机分布、提出适宜的抽样方法为５点取样、每点１至２株标准树、每株标准树仅调查南或北下层即可、此法既准确又省工省时。

STUDIES ON SPATIAL DISTRIBUTIONAND SEQUENTIALSAMPLING TECHNIQUEOF ACANTHOLYDO PINIVORA ENSLIN

The distribution patterns of eggs of Acantholyda pinivora Enslin in pine treeare studied in this paper. These determined results with I wao's regression equation of M-x,Taylor's power rule and four aggregative indexs show that the egg distributions allare of random distribution in different layers and directions of pine trees. The followingsritable sampling method is used: sample at five points,at eath point one plant or twoplants are chosen as standard trees where only the southern or northern lower layer isare investigated. This sampling method is not only accurate but saving arbour and time.