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1博乐市气候特点博乐市3月下旬,4月上、中旬气温偏高,4月下旬出现零下1℃~5℃的气温。5月气温偏高但多变,大风天气频繁,受此影响,春季食叶害虫(春尺蠖、杨梦尼夜蛾、榆黄黑蛱蝶等)发育历期一般当年比往年提前7~8天左右。4月底的降雨、降温等气候条件可有效地抑制食叶害虫的发生和发展,降低食叶害虫的基数。夏季(6、7、8月份)持续高温,平均气温一般在23.5℃左右,少雨的天气极利于杨树食叶害虫的繁殖,这是导致杨树杨二尾舟蛾(第2代、第3代)等害虫发生数量多,危害期提前的主要原因。
1 Bole City Climate Bole City in late March, April, mid-high temperatures, in late April appeared minus 1 ℃ ~ 5 ℃ temperature. Affected by the high and changeable temperature in May and the frequent windy weather, the developmental duration of spring leaf-feeding pests (spring scape, Yang Meng nymph, etc.) is generally 7-8 days earlier than in previous years about. The end of April rainfall, cooling and other climatic conditions can effectively inhibit the occurrence and development of leaf-eating pests and reduce leaf-based pests. The summer (June, July and August) continued to be hot and the average temperature was generally around 23.5 ℃. The dry weather was very conducive to the poplar leaf-feeding pests, which led to the poplar poplar moth (2nd and 3rd Generation) and other pests and more, the main reason for the hazard period ahead of schedule.