论文部分内容阅读
韭蛆为韭菜迟眼蕈蚊幼虫,属杂食性害虫,尤其嗜食韭菜、露地蔬菜。年生6代,以幼虫在寄主根际越冬,历年4～5月是严重为害期,夏季锐减,9月以后为害又上升,11月越冬。保护地蔬菜周年发生。成虫产卵趋向隐蔽、湿润和寄主茎部有腐败物的场所。卵成堆状,单雌产卵量通常在40～210余粒。幼虫共四龄,历期随温度的升高而缩短,具有群集为害性、趋湿性、半腐生性、分泌丝线拉丝网及结茧化蛹习性。经试验,用草木灰和细砂覆盖地面的方法,造成干燥的生态条件,对控制发生效果显著;药剂防治适期,露地韭菜4月中、下旬,保护地11月下或12月上旬。
Leek maggots for lettuce Mushroom fungus larvae, is a omnivorous pest, in particular, leftover leeks, exposed vegetables. The 6-year-old, the larvae overwinter in the host rhizosphere, 4 to May over the calendar year is a serious injury, sharp drop in summer, after September damage and rise in November overwintering. Protected vegetable anniversaries occur. Adult eggs tend to conceal, wet and host stems have a place of corruption. Egg piles, single female fecundity is usually 40 to 210 tablets. A total of four instar larvae, the duration of the shortening with increasing temperature, with cluster harmful, wet, half saprophytic, silk screen silkworm secretion and cocoon pupation habit. The test, with ash and fine sand cover the ground, resulting in dry ecological conditions, the control effect is significant; Pharmacy control period, open leek in mid-April, late in November or early December.