苹果园桃小食心虫卵的分布型及调查方法研究

STUDY ON DISTRIBUTION AND INVESTIGATION METHOD OF CARPOSINA NIPOENSIS WALSINGHAM EGGS

本文研究了桃小食心虫 (CarposinaniponensisWalsingham )卵在苹果园的空间分布型及密度分布。通过测定桃小食心虫卵在苹果树上的密度除东下外各方位没有显著差异 ,卵的分布型 ,在各方位均呈聚集分布。确定了以田间“Z”字型九点取样 ,每点调查 2 0个果的调查方法。通过多点试验 ,调查结果准确可靠。为方便、科学地调查桃小食心虫提供了依据。

This article studies the type of the spatial distribution and the density distribution of Carpsina nipponensis eggs in the apple orchard By measure,there is no outstanding difference about the density of Carposina nipponensis eggs on the apple trees at all directions except the under of east The types of eggs distribution at every direction all appear crowding distribution We develop out sampling nine points from the “Z” figure Which is in the field and we sample twenty fruits at each spot By many spots experiment,the results of investigation is correct and reliable It gives the basis of convenienting and scienticficly investing the Carposina niponensis eggs