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近年来,草大麦(H. Sub.hexastichum)在我省小麦田中发生逐年加重,已成为麦田主要恶性杂草之一。1990年开始,笔者对草大麦进行调查研究,现将结果初报如下。一、形态特征和主要生物学特性草大麦两年生,为六棱皮大麦,长芒有锯齿,芒长于穗。芽鞘绿色,幼苗直立黄绿,叶耳白色膜质透明,叶舌大,有不规则齿,叶片宽,穗长方形,株高平均97.5厘米,最高达115厘米,茎秆有韧性不易倒伏,株形较紧凑。分蘖力强,单株平均分蘖13.3个,最多可达119个。单株成穗
In recent years, H. barb L. (H. Sub.hexastichum) has been increasing year by year in the wheat fields of our province and has become one of the major weeds in wheat fields. Beginning in 1990, I conducted a survey of grass barley, the results of the first report is as follows. First, the morphological characteristics and main biological characteristics Grass barley biennial, six-sided leather barley, Changma serrated, Mount long in the ear. Ophiopogon japonicus, seedlings erect yellow-green, auricles white membranous transparent, large ligule with irregular teeth, wide leaf, spike rectangle, plant height average 97.5 cm, up to 115 cm, stalk toughness is not easy to lodging, strain Compact shape. Strong tillering ability, the average tiller per plant 13.3, up to 119. Single plant ear