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渠道杂草丛生,造成糙率加大,断面缩小,流速减慢,渗漏量增加;导致渠道水利用率大大下降,灌水时间延长,灌溉水量和能源消耗增加。特别在农村商品经济的日益发展,农村劳力大量转移的情况下,亟待改进机电排灌灌区的管理工作。应用化学药物清除渠沟杂草,是水利部门对农村改革,解放生产力的技术措施之一,是应用化学措施代替工程措施的一个方面。
Channel overgrowth, resulting in increased roughness, cross-sectional reduction, flow rate slowed down, the amount of leakage increased; resulting in significantly reduced channel water use efficiency, irrigation time, irrigation water and energy consumption increased. Especially in the growing development of rural commodity economy, a large number of rural labor transfer situation, urgent need to improve the mechanical and electrical irrigation and drainage irrigation area management. The application of chemical drugs to remove weeds in the ditch is one of the technical measures taken by the water conservancy department to reform and liberate the productive forces in rural areas and to replace chemical engineering measures with engineering measures.