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害虫在秋末进入休眠期,此期抗药性差,虫源集中。利用这一特性,抓住秋末冬初有利时机开展防治,不仅花钱少,而且可大大降低来年虫源,消灭隐患。 麦蚜 多以卵在麦苗枯叶上,杂草下,土缝中越冬。而且愈向北方,以卵越冬率越高。在冬季防治上,一是浇水,浇好冬水,既可使其大量死亡,又有利小麦越冬。二是冬季清除田间秸杆、枯叶、杂草、闲置地进行深翻,利用低湿冻死害虫。三是早春耱耙镇
Pests into the dormant period in late autumn, this period of poor resistance, concentrated source of insects. Take advantage of this feature, seize the favorable opportunity of early autumn and early winter to carry out prevention and treatment, not only spend less, but also greatly reduce the source of the next year to eliminate hidden dangers. Wheat aphids and more eggs in wheat seedling leaves, weeds, soil cracks in winter. And more to the north, the higher the rate of overwintering eggs. In winter prevention and control, one is watering, pouring winter water, can make a large number of death, but also beneficial to winter wheat. The second is to clear the field in winter straw, dead leaves, weeds, idle deep plowing, the use of low humidity freeze dead pests. Third, early spring 耱 rake town