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美洲斑潜蝇是近年蔬菜生产上出现的新害虫,寄主范围广,危害重。为解决当前蔬菜生产急需,我们近二年来摸索美洲斑潜蝇发生规律,观察其主要的生物学特性,为测报与防治提供依据,通过1995-1996年的立题研究,取得了较好的效果,现总结如下: 一、美洲斑潜蝇寄生范围与发生程度的调查 我们从1995年8-12月、1996年4-11月中旬在上海菜区调查,已发现受美洲斑潜蝇危害的蔬菜有20多种,按株寄生率小于5％为轻发生、株寄生率5％-30％为中等发生、株寄生率30％以上为重发生的发生程度区分,其中重发生的蔬菜种类有刀豆、豇豆、扁豆、黄瓜、冬瓜、丝瓜、樱桃番茄、番茄等8种,中等发生的有生菜、茄子、大白菜、蒲瓜、南瓜等5种,轻发生的有莴苣、萝卜、青菜、卷心菜、美芹、蚕豆、豌豆、毛豆、花菜、胡萝卜、辣椒、茼蒿等10多种蔬菜。 二、美洲斑潜蝇的习性 （一）成虫;成虫大多在上午前羽化,活泼,善于短距离飞翔,对黑光灯无趋光性,但对黄色光谱敏感,有较强的趋性。主要的活动盛期在白天,以早晨到11时最盛,午后活动减弱,晚上在植株的叶背栖息。活动区域随植株的不同高度而变化,以植株的中下部为多。
Liriomyza sativae is a new pest that appears in vegetable production in recent years, with a wide range of hosts and serious harm. In order to solve the urgent need of vegetable production in the past two years, we explored the occurrence regularity of the leafminers, and observed the main biological characteristics of them to provide evidence for the detection and prevention. Through the study of 1995-1996, we achieved good results , Are summarized as follows: First, the survey of the parasitic range and degree of occurrence of Liriomyza sativae We investigated from the Shanghai vegetable plot from August to December 1995 and from mid April to November 1996, and found that the vegetables harbored by Liriomyza sativae There are more than 20 kinds, according to the parasitic rate of less than 5% of the light to occur, the parasitic rate of 5% -30% is moderate, the parasitic rate of more than 30% is the occurrence of re-occurrence of the degree of differentiation, which re-occurrence of vegetables with knife 8 kinds of beans, cowpea, lentil, cucumber, melon, sponge gourd, cherry tomato and tomato. There are 5 lettuce, eggplant, Chinese cabbage, squash and squash which are medium in size, lettuce, radish, , Parsley, broad beans, peas, soybean, cauliflower, carrots, peppers, chrysanthemum and other 10 kinds of vegetables. Second, the American leafminer habit (a) adults; adults mostly feather before the morning, lively, good at short distance flying, no phototaxis on black light, but sensitive to the yellow spectrum, there is a strong tendency. The main activity peak during the day, to the peak of 11 in the morning, activity weakened in the afternoon, at the back of the leaves of plants habitat. The area of activity varies with the height of the plants, mostly in the middle and lower parts of the plant.