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利用频次分布法和聚集指标法研究结果表明,二代棉铃虫卵在夏大豆上呈聚集分布,聚集的原因是由环境条件引起的,其空间分布型符合负二项分布。二代棉铃虫卵主要产在夏大豆的叶片上,叶片正反面的落卵量无显著差异。有卵株率和卵平均密度之间为幂函数关系。
The results of frequency distribution method and aggregation index method showed that the second-generation cotton bollworm eggs accumulated on summer soybean and the aggregation was caused by environmental conditions, and its spatial distribution conformed to the negative binomial distribution. The second-generation cotton bollworm eggs are mainly produced on the leaves of summer soybean, and there is no significant difference in the amount of eggs laid on the front and back of the leaves. There is a power function relationship between egg plant rate and egg average density.