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本文采取定树观察法,对柑桔园主要害虫消长动态进行了研究,结果表明,柑桔树春梢抽发期4-6月是害螨类、蚧类、粉虱类和蚜虫等主要害虫发生危害的高峰期,其周年消长动态:柑桔全爪螨(Panonychus citri Megregor)和柑桔始叶螨(Eotetranychnskankitus Ehara)呈现明显的“春季”(5月上、中旬)和“秋季”(8月下旬、9月上、中旬)2个为害高峰,矢尖蚧(Unaspis yanonensis Ku-wana)呈现明显的“初夏季”(5月下旬)为害高峰,柑桔粉虱(Dialeurodes citri Ashmead)和黑翅粉虱(Aleurocanthus spiniferas Quain-tac)呈现4个明显的为害高峰,4月中、下旬是为害的最高峰,桔蚜(Toxoptera citricide Kirkaldy)则呈现“春季”(4月下旬至5月上旬)为害高峰,柑桔潜叶蛾(Phyllocnistis citrella Stainton)呈现明显的“秋季”(8月下旬至9月下旬)为害高峰。
In this paper, fixed tree observation method was used to study the dynamics of the growth and decline of major pests in citrus orchard. The results showed that the main insect pests such as pest, scale, whitefly and aphid were found from April to June, The occurrence of dangerous peak, the anniversary of the dynamics of growth: Citrus red-legged mite (Panonychus citri Megregor) and citrus green leaf spider mite (Eotetranychnskankitus Ehara) showed a clear “spring” (mid May, mid) and autumn “(Late August, mid-September, September) showed the highest peak of damage, Unaspis yanonensis Ku-wana showed the peak of” early summer “(late May) Dialeurodes citri Ashmead and Aleurocanthus spiniferas Quain-tac showed four obvious peak of pests, the highest peak appeared in mid-April and late April, and Toxoptera citricide Kirkaldy presented ”Spring“ April to early May), Phyllocnistis citrella Stainton showed a significant ”peak" (late August to late September) peak.