【摘要】 柑橘园树冠蜘蛛群落物种丰富度(Ｓ)与调查株数(ｑ)之间的关系式为:Ｓ＝２,２８０ｑ０．７８７,经Ｘ２检验,理论数与观察数之间具较高的吻合度．柑橘园树冠蜘蛛群落调查的“最小株数”为９株．更多还原

【Abstract】 This article deals with the relation between the species richness of crown spider community and the plants number investigated in citrus orchard. The result shows that they have such a formula as;s = 2. 280q0.787,by X2-test,there is a better goodness-of-fit between the theoretic value and real value. According to statistical method of Archibald,the leastplants number investigated is 9.更多还原