昭通县大桥大队科技组,七三年进行了稻田化学除草不中耕的示范,面积共120亩,效果明显,除能节省大量薅秧劳力外,还比同田除草中耕的增产8—11％,在有条件的地方,可以进行推广。大桥二十队,十多亩除草不中耕田,亩产910斤,比相同田块除草中耕田800斤,增产11％;大桥八队,20队除草不中耕田,亩产810斤,比相同田块除草中耕田750斤,增产8％。由于省工、增产、没有副作用,深受生产队干部群众的欢迎。他们的具体操作技术是:选水源好,牙齿草较大的田块,于水稻移栽后20～30天,趁 Zhaotong County Bridge Battalion Technology Group conducted a demonstration in the seventy-three years of paddy field chemical weeding and no-tillage with a total area of ​​120 mu. The effect was obvious. In addition to saving a lot of yang labor, it also increased the yield by 8-11% Wherever conditions permit, promotion can be carried out. Bridge twenty team, ten acres of weeding not in plowing, mu produce 910 pounds, 800 pounds more than the same field weeding in the plow, an increase of 11%; bridge eight teams, 20 teams weeding not in farming, yield 810 pounds per mu, than the same Fields weeding in plowing 750 kg, an increase of 8%. As a result of labor, increase production, no side effects, welcomed by the production team cadres and the masses. Their specific operating techniques are: choose a good water source, large teeth grass plots, 20 to 30 days after transplanting rice, while