化学除草具有省工、增产、高效等特点,但随投入量的增大,对环境的污染日益严重。在两熟制条件下,使用阿特拉津稍有不当就会造成下茬小麦死苗。为此,我们于1988年在北京昌平县北七家乡生产大田中及本所试验场京早7号夏玉米试验田进行除草方式试 Chemical weeding has the characteristics of saving labor, increasing production and high efficiency. However, as the input amount increases, the pollution to the environment is becoming more and more serious. Under the two cooked conditions, the use of atrazine slightly improper will result in dead wheat seedlings. For this reason, we conducted a weeding trial in 1988 in the field of Daejeon, Beiqijia Township, Changping County, Beijing, and the summer corn trial field, Jingzao 7,