为了解日本看麦娘在本地的叶龄及分蘖特性,以便更好的为综防服务,我们在省麦田草害综防协作组的统一分工下,于84年秋播开始,对本地发生的麦田主要恶性杂草“日本看麦娘”作定株、定期观察其叶龄、分蘖和成穗特性,现综合资料如下: 一、基本情况: 观察点属里下河粘土稻麦区,地处北纬33度30分,东经119度50分,海拔高度1.8米,在条播小麦泗阳936田行间进行,定株10株,系自然出苗的植株,该麦田10月17日播种,播幅 In order to understand the leaf age and tillering characteristics of Amanita in Japan so as to provide a better service for comprehensive prevention, we started the autumn sowing of the Crops Harvest Prevention and Cure Group in Shaanxi Province in early autumn in 1984, The main malignant weed “Japan to see Maiang” as a set of plants, regular observation of its leaf age, tillering and spike characteristics are summarized as follows: First, the basic situation: the observation point is the Lixiahe clay rice zone, 33 degrees 30 minutes, 119 degrees 50 minutes east longitude, 1.8 meters above sea level, in the sown wheat Siyang 936 Tianhanghanghang, Strain 10 plants, naturally sprouting plants, October 17 wheat crop sowing, sowing