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(一)农业防除1、输作倒茬:输作倒茬是防除伴生性杂草和寄生性杂草的有效措施.如棉麦轮作,麦田可选用20%二甲四氯在苗期防除双子叶杂草,如田旋花、灰藜、苍耳等.2、灭茬伏耕:麦收后及时用3.4圆盘耙进行灭茬,再行伏翻,深度24—25cm,把芦苇、旋花草、花花柴的根翻至地表,人工捡拾草根可有效地减少多年生杂草.3、秋溉冬灌可把一年生杂草种子翻入深层不能萌发,多年生杂草根茎翻入土表冻死.4、机械精选种子可以汰除混入作物里的杂草种子.5、清除走水渠及田边地头杂草.尤其秋季结籽之前,更为重要,草籽能随水流传播.
(A) of agricultural control 1, the transplanted stubble: transplanted stubble is to control associated weeds and parasitic weeds effective measures such as cotton and wheat rotation, wheat field optional 20% MCPA in the seedling stage to prevent dicotyledonous hybrid Grass, such as Convolvulus, Chenopodium glaucum, Xanthium, etc .. 2, stubble Fusong: wheat harvest timely with 3.4 disc harrow stubble, and then volt turn, the depth of 24-25cm, the reed, convolvulus, flower firewood Roots turn to the surface, artificial pick grass can effectively reduce perennial weeds .3, autumn irrigation winter irrigation can weed seeds into the deep can not germinate, perennial weed rhizome turned into the soil surface frozen to death .4, mechanical selection of seeds can Elimination of weeds mixed into the crop seeds .5, remove drains and Tanabe land weeds, especially before the autumn seed, more important, grass seeds can spread with the flow of water.