1963年以来,我县麦粘虫大发生几乎都是集中在稻茬麦田。主要是稻茬麦苗子嫩,吸引雌蛾到田间露地稻桩上产卵,幼虫孵化后又能以稻桩作为栖蔽场所。同时,本地稻桩中越冬二化螟基数很大,一般在年后每亩有幼虫1,000—3,000头,多达10,000—15,000头。 Since 1963, the occurrence of Myzus persicae in our county almost always concentrates on the field of rice stubble. Mainly rice stubble seedling tender, to attract female moths to field open field rice pile spawning, larvae hatch again with rice piles as habitat. In the meantime, the number of wintering stem borers in local rice piles is very large. Generally, there are 1,000-3,000 heads of larvae per acre at the beginning of the year, up to 10,000-15,000 heads.