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目的:了解化橘红害虫红蜘蛛Panonychus citriMcGregor的发生与危害特性,为防控提供科学依据。方法:在红蜘蛛发生较严重的区域选择生长一致的结果树、非结果树,调查化橘红植株东、南、西、北、中五个方位及上、中、下三部位红蜘蛛数量。结果:红蜘蛛在化橘红基地1年有2次发生高峰,分别为3月中下旬、10月上旬至11上旬,高温高湿不利于红蜘蛛的发生;春季结果树虫口数量高于非结果树,秋季结果树虫口数量低于非结果树;化橘红植株西北方位红蜘蛛数量多于其它方位,中部红蜘蛛虫口数显著高于上部和下部。结论:在化橘红基地红蜘蛛的发生与植株状态、生长年限、方位及气候条件等相关。
OBJECTIVE: To understand the occurrence and characteristics of Panonychus citriMcGregor, a red-orange insect, to provide a scientific basis for prevention and control. Methods: Results trees and non-fruit trees were selected to grow in the areas where spider mites occurred more frequently. The number of spider mites in the east, south, west, north and middle of the orange plants was investigated. Results: The spider mites peaked twice in 1 year in the citrus red base, respectively in late March and early October to early 11. The high temperature and high humidity were not conducive to the occurrence of Spider mite. The number of insect population in spring was higher than that of the non-fruiting tree The number of insect population was lower in autumn than in non-fruit trees. The number of red-spider mites in the orange-red plants was more than that in other directions. The number of spider mites in the middle was significantly higher than that in the upper and lower ones. Conclusion: The occurrence of spider mite in the tangerine base is related to plant status, growth period, azimuth and climatic conditions.