黑龙江省各国营农场栽培大豆的面积约占总面积的33%左右。历年来各国营农场因为杂草的危害,严重地影响了大豆的产量。加以缺乏机械除草的经验,每年一公顷大豆,仅人工除草(以两次计)一项即需花费30—40元左右,提高了生产成本,减少了收入。近两年来,各场都积极设法发挥机械除草的作用,以便减少人工,节省开支。根据我们两年 Heilongjiang Province, state-owned farms cultivation of soybean area accounts for about 33% of the total area. Over the years, all state-owned farms have seriously affected soybean production because of the weed damage. With the lack of mechanical weeding experience, one hectare of soybeans per year alone costs only 30-40 RMB for artificial weeding only (twice), raising production costs and reducing income. In the past two years, various fields have actively tried to give play to the role of mechanical weeding in order to reduce manpower and save expenses. According to us two years