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聚集度指标测定表明,草间小黑蛛在柑桔树上呈聚集分布,聚集是由环境因素引起的。方差分析表明在树冠不同部位的聚集强度无显著差异。
Aggregation index measurement showed that the black spider grass was gathered in the citrus tree distribution, aggregation is caused by environmental factors. Analysis of variance showed no significant difference in aggregation intensity between different parts of the canopy.