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文章综述了苜蓿在建植过程中会受到各类杂草的危害,使植株发育不良,生长受阻,利用年限缩短,严重者可使整块田地退化,甚者绝产;同时导致产品质量下降,品质降低,商品率不高,造成严重的经济损失。因此,利用各项防治技术在苜蓿田综合防治病虫害,是保护苜蓿田安全、延长利用年限、提高草产品产量和质量、促进商品流通、增加草业效益的必要措施。
The article summarized the alfalfa will be harmed by all kinds of weeds in the process of its establishment, which will make the plants develop poorly, the growth will be hindered and the use life will be shortened. In severe cases, the whole land will degenerate or even become dead; meanwhile, Decreased quality, commodity rate is not high, causing serious economic losses. Therefore, the use of various control techniques in alfalfa fields to comprehensively control pests and diseases is the necessary measure to protect the safety of alfalfa fields, extend the useful life, improve the yield and quality of grass products, promote the circulation of commodities and increase the benefits of grass industry.