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福建省植保站近日调查发现,今年1~3月气温偏低且降水偏多,不利柑橘红蜘蛛的越冬繁殖,柑橘红蜘蛛虫口密度较低。柑橘红蜘蛛是福建省柑橘的重要害虫,以各种虫态群集叶、果吸汁为害,造成落叶落果,影响产量与树势。红蜘蛛一年发生多代,世代重叠,一般年份盛发高峰期在4~5月和9~10月。春季如遇高温干旱天气以及天敌数量少时,1个月左右便会成灾。
Fujian Plant Protection Station survey found recently, January to March this year, the temperature is too low and more precipitation, unfavorable citrus red spider overwintering reproduction, citrus red spider insect population density is low. Citrus red spider is an important pest of citrus in Fujian Province, with a variety of insect-like cluster leaves, fruit juice damage, resulting in deciduous fruit, affecting yield and tree potential. Spider mites occur multiple generations a year, generations overlap, the peak of the general year in April to May and September to October. Spring in case of high temperature and drought weather and a small number of natural enemies, about a month or so will disaster.