白洋淀是我国主要芦苇生产基地之一,近年来苇田葎草和鸡眼草等丛生,1株葎草能使3—130多平方米芦苇倒伏,造成减产10—20％,严重时甚至绝收。1982—1986年进行了大面积苇田化学除草。在杂草4叶期芦苇高10厘米以上时,用72％2,4-D丁酯防治,防效在92％以上。每亩可节省3—5个工,芦苇增产12％以上,经济收益20—25元。 一、操作规程 1.标记面积 苇田没垄没行,几万亩连成一片,田间作业困难,喷药前每600—800亩用 Baiyangdian is one of the major reed production bases in China. In recent years, reed fields such as Ephemeroptera and Opuntia ficus grow in clusters. One Remy grass can lodging 3-130 square meters of reed, resulting in a decrease of 10-20%. 1982-1986 A large area of ​​reed chemical weeding. In the 4-leaf stage of weeds when the reed taller than 10 cm, with 72% 2,4-D-butyl control, control effect in more than 92%. Can save 3-5 workers per acre, reeds yield more than 12%, the economic benefits of 20-25 yuan. First, the operating procedures 1. Marked area Reed field did not ridge did not line, even a few acres into a field operation difficult, 600-800 acres before spraying with