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本文应用主分量分析方法对束管食螨瓢虫(Stethorus chengi)及其猎物桔全爪螨(Panongchus citri McG.)在柑桔树冠的分布与环境的关系进行了研究。结果表明,光照强度是影响食螨瓢虫及其猎物分布的最重要环境因子,占全部信息量的55.45%,并与食螨瓢虫和桔全爪螨的分布呈正相关。叶片含水量和叶温系数,分别占总信息量的11.17%和10.03%。
Principal component analysis (PCA) was used to study the relationship between the distribution of the canopy tube Stengorus chengi and its prey Panongchus citri McG. In citrus canopy and the environment. The results showed that light intensity was the most important environmental factor influencing the distribution of ladybugs and their prey, accounting for 55.45% of the total information, and positively correlated with the distribution of ladybugs and ladybugs. Leaf water content and leaf temperature coefficient, accounting for 11.17% and 10.03% of the total amount of information.