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该文对枣树红蜘蛛在田间枣树树冠中的分布动态进行了研究。研究结果表明，枣树红蜘蛛在树冠上部密度最大，下部次之，中部最低。在树冠不同方向上以东向枝条叶片上枣树红蜘蛛种群密度最高，南向和北向次之，西向较低。以种群密度由大到小排序，在树冠上部为南、东、西、北；在树冠中部为东、北、南、西；在树冠下部为东、北、南、西。不同部位和不同方向上螨量与总螨量均呈显著的正相关，其中以西向枝条上螨量与总螨量的相关程度最高，为ｒ＝０．９９８６。据此，可通过调查树冠某一部位枝条上螨量来监测总螨量的数量动态情况。
This paper studied the distribution dynamics of jujube spider mite in the jujube tree canopy. The results showed that jujube spider mite had the highest density in the upper canopy, the lowest in the lower part and the lowest in the middle part. In the different directions of canopy, the oriental branches spider leaves on the highest density spider mite population, followed by the south and north followed by the west to the lower. The order of population density is descending. The upper part of the canopy is south, east, west and north. The middle part of the crown is east, north, south and west. The lower part of the crown is east, north, south and west. There was a significant positive correlation between mites and total mites in different parts and directions. Among them, the correlation between mites and total mites in the west branches was the highest (r = 0.9986). Accordingly, the dynamics of the quantity of total mites can be monitored by investigating mites in the branches of a canopy.