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2009年4月在昆明市呼马山云南松种植林内设置5块样地对昆明松梢斑螟幼虫进行调查.采用多个聚集度指标和回归分析法,对昆明松梢斑螟幼虫空间分布型进行测定,结果表明:除Taylor幂法则的回归模型拟合效果不好,无法判定外,其余各项指标及回归模型均判定其空间分布型为聚集分布;用Blackith提出的“聚集均数”法对聚集原因进行分析,其聚集原因可能是由于昆虫本身的聚集行为与环境因子共同作用所致.对植株不同方位间虫口密度进行了差异显著性检验,结果表明:不同方位间虫口密度差异不显著.建立了该虫幼虫的序贯抽样模型和理论抽样数公式.
In April 2009, five plots were set up in the Pinus yunnanensis plantation in Kunming city, Yunnan Province to investigate the larvae of Pinctomyces militaris in Kunming. The spatial distribution patterns The results show that the regression model of Taylor power law is not good and can not be judged, the rest of the indicators and the regression model all determine the spatial distribution as the aggregation distribution; "Law analysis of the reasons for the aggregation, the aggregation may be due to the aggregation of insects and environmental factors together due to the role of different orientations of plants were significantly different test population density, the results showed that: Not significant.The sequential sampling model and theoretical sampling number formula of larvae were established.