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近年来,野燕麦(Anena fatua L.)在我县部分稻麦两熟地区的危害有发展趋势。为此,我们于1989～1991年进行了稻茬小麦田野燕麦生物学特性的观察研究,为综合防除提供依据。一、观察内容与方法 (一) 观察地点泰县苏陈镇双河村、鲍徐镇新建材。 (二) 研究方法 (1) 杂草田间消长动态:设两个播期,每块田定5点,每点0.11米~2,5天查1次,计数后拔除,直至停止发生。(2) 杂草生育期:野燕麦出苗后定20株,记载叶龄、分蘖、拔节期,抽穗期、落粒期,并与同期扬麦5号的生育进程比较。(3) 籽粒灌浆速度:以穗顶刚露出
In recent years, the damage of wild oat (Anena fatua L.) in some rice-wheat double-ripe areas in our county has a tendency of development. To this end, we conducted in 1989 ~ 1991 observation of rice fields of wild oats biological characteristics of oats, to provide a basis for comprehensive prevention and control. First, the observation content and methods (A) observation site Su County, Taicang County Shuanghe Cun, Bao Xuzhen new building materials. (B) research methods (1) dynamics of weed field growth and decline: set two sowing date, each set at 5 o’clock, each point of 0.11 m ~ 2,5 days check 1, after counting removed until it stops. (2) Weed growth period: 20 oats were set out after the emergence of wild oats. Leaf age, tillering, jointing stage, heading date and falling period were recorded and compared with the growth process of Yangmai 5 at the same time. (3) grain filling rate: spike just exposed