CAJ | 학술논문

2010-2011年，分别在新疆呼图壁对苜蓿叶象甲进行拍枝和网捕调查，并根据调查结果对苜蓿叶象甲幼虫的空间分布进行多个聚集度指标和 Iwao回归分析。结果表明，其空间分布型为聚集分布，理论拟合为负二项分布，其聚集原因是由昆虫行为或环境条件引起的，聚集强度随种群密度的升高而增加。应用 Iwao 的抽样模型建立了叶象甲幼虫的田间理论抽样数公式：N ＝(2．95/m+0．049)/D 2。
2010-2011년，분별재신강호도벽대목숙협상갑진행박지화망포조사，병근거조사결과대목숙협상갑유충적공간분포진행다개취집도지표화 Iwao회귀분석。결과표명，기공간분포형위취집분포，이론의합위부이항분포，기취집원인시유곤충행위혹배경조건인기적，취집강도수충군밀도적승고이증가。응용 Iwao 적추양모형건립료협상갑유충적전간이론추양수공식：N ＝(2．95/m+0．049)/D 2。
The H ypera postica Cyllenhal was investigated by net catch and pat branch at Hutubi in 2010-201 1.The spatial distribution pattern of the H ypera postica Cyllenhal larvae were studied by some ag-gregation indices and Iwao regression analysis methods.The results showed that the spatial distribution pattern of the larvae was together distribution,theoretical accordance was negative binomial distribution. Aggregation cause was the insect behavior and environmental conditions.Aggregation strength increased with increasing population density.The larvae of the field theoretical sampling number formula was com-pleted with Iwao sampling model:N =(2.95/m +0.049)/D 2 .