杂草是危害农作物的大敌,它与水稻争地、争肥、争水,影响水稻正常生长。随着耕作制度和栽培技术的改革,单靠人工除草,对于提高复种指数、掌握农时季节、调剂劳力等方面都有影响。广大贫下中农遵照毛主席关于“我们必须打破常规,尽量采用先进技术”的教导,在“农业学大寨”运动中,积极推广化学除草,取得良好效果。如长春大队由于使用除草剂,大大提高了劳动效率,晚稻中耕除草仅十五天时间就结束,此往年提前二十天,配合其他农业措施,使晚稻产量此一九七一年增长百分之五十。 Weeds are the enemy of endangering crops, it competes with rice, fight fat, fight water, affect the normal growth of rice. With the reform of the cultivation system and cultivation techniques, the artificial weeding alone has an impact on raising the multiple cropping index, grasping the agricultural season, and adjusting the labor force. The majority of poor peasants and middle peasants, in accordance with Chairman Mao’s teachings on “We must break the routine and try our best to adopt advanced technologies,” promoted the chemical weeding and achieved good results in the “Agriculture Studies in Dazhai” campaign. For example, the Changchun Brigade has greatly increased its labor efficiency due to the use of herbicides. The cultivation of late rice only ended in 15 days, which was 20 days ahead of previous years and accompanied by other agricultural measures to increase the output of late rice by 71% this year fifty.