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菟丝子(Cuscuta Chinensis)是一种寄生性恶性杂草,主要危害大豆,每年我场均有不同程度的危害造成大豆减产,局部危害严重的甚至颗粒无收。据八三、八四年调查菟丝子的发生面积占我场大豆种植面积的50％左右。为了摸索有效地防除菟丝子的途径,我们对菟丝子的发生缠绕习性和防除作了一些调查,并在化学防除方面做了一些试验工作,现综述如下: 一、菟丝子的生物特性菟丝子一般在气温达15℃时其种子开始萌芽出土,24—28℃为出土适宜温度。据观察,
Cuscuta Chinensis is a kind of parasitic malignant weed that mainly endangers soybean. Each year, I have suffered from varying degrees of harm in the field, causing a serious decrease in yield of soybean, with serious local damage and even failure of harvest. According to the survey conducted in 1983 and 1984, the occurrence area of dodder accounted for about 50% of the soybean acreage in our site. In order to explore ways to effectively control the dodder, we have done some investigations on the occurrence and control of the dodder, and do some experiments in the chemical control, are summarized as follows: First, the biological properties of dodder Dodder is generally up to 15 ℃ when its seeds germinate unearthed, 24-28 ℃ unearthed suitable temperature. According to observation,