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人类自从事农业生产以来,就一直在和杂草作斗争。化学除草就是和杂草斗争的一种新方法。广泛使用化学药剂代替人力除草,可以把农民从繁重的除草劳动中解放出来,节省大量劳动力,尤其在大忙时节,有利于调剂开活茬。推广化学除草,可以促进农业生产技术的现代化,和机械化大生产相配合,提高生产效率、增加农作物的产量,促进农、林、牧、副、渔全面发展。化学除草的必要性及其发展动态农田中的杂草比作物对环境的适应性强,繁殖力强,与作物争肥、争水、争光,因此田间杂草对农作物的危害不亚于虫害和病害。全世界农业生产中,杂草每
Humans have been battling weeds since agricultural production. Chemical weeding is a new way of fighting weeds. The extensive use of chemical agents instead of man-made weeding can liberate peasants from heavy weeding and save a lot of labor, especially during the busy season, which will help adjust and activate the crop. Promote the chemical weeding, can promote the modernization of agricultural production technology, and mechanization of large-scale production to improve production efficiency and increase the yield of crops, and promote the comprehensive development of agriculture, forestry, animal husbandry, vice and fishing. The necessity of chemical weed control and its development The weed in farmland is more adaptable to the environment than the crops and has strong fertility and competing with crops for water, Diseases. Every weed in agricultural production around the world