【摘要】 农田杂草危害很大而且是多种病虫害的寄主和传播者 .针对其在幼苗期易于防治 ,以及截获后种子无法鉴定时采用幼苗鉴定的方法等特点 ,本文详细研究了新疆农田 1 6种十字花科主要杂草幼苗的形态特征 ,编制了分种检索表 ,并对照实物绘制了幼苗形态图 ,并进行形态描述 .更多还原

【Abstract】 In this paper,a contrast has been made among sixteen species about classified characteristic of seedling on cruciferous weeds in Xinjiang,worked out a key to species, drew and described external physical characteristic. It is help that weed seedling was distinguished correctly by agricultural technologist,as well as we identified seed of weeds that was intercepted and captured through seedling stage.更多还原