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在我省冬麦区,危害麦田的主要有播娘蒿、田旋花、藜等阔叶类杂草。其繁育速度快,不仅与小麦争夺营养,影响通风透光,还常作为害虫寄主,招引虫害。近年来,由于气候条件适宜,耕作方式变革,加之人们认识程度不够,致使杂草群落得以发展壮大,危害逐年加重。尤其是1998年麦季,许多地区藜害严重,出现了“远看一片绿,近瞧是麦地,菜比麦子多,割完籽满地”的现象。如不及时防治,很可能对来年的小麦生产构成更大威胁。要控制杂草蔓延,采取综合防治措施:
Winter wheat in our province, the main harm to the wheat field Artemisia annua, Coni spinosum, Quinoa and other broad-leaved weeds. Its breeding speed, not only compete with the wheat nutrition, affecting the ventilation and light, but also often as the host of pests, recruit pests. In recent years, owing to the suitable climatic conditions, the change of farming methods and the lack of people’s understanding, the weed community has been developed and hardened, which has been increasing year by year. Especially in 1998, Mai quarter, many areas of serious crop of quinoa, there has been “a glimpse of green, near look at the wheat field, more vegetables than wheat, cutting all over the ground” phenomenon. If not controlled in time, it is likely to pose a greater threat to the wheat production in the coming year. To control the spread of weeds, to take comprehensive control measures: