我场位于小兴安岭西南麓半山区,土地多属低湿易涝草甸土,有利于杂草生长蔓延。特别是稗草对大豆生产的影响危害最大。据1973年试验站调查,在豆苗刚出土时,每平方米有稗草2,000—3,000株。由于草荒,全场大豆亩产只有109斤,不受杂草为害的地块,亩产达到315斤。 My field is located in the Mid-western Foothills of the Little Xing’an Mountains. Most of the land belongs to the low wet and waterlogged meadow soil, which is conducive to the growth of weeds. In particular, the impact of barnyard grass on soybean production most damaging. According to a pilot station survey in 1973, there were 2,000-3,000 barnyardgrass per square meter at the time of the unearthed bean sprouts. Due to grass shortage, the audience of only 109 kg of soybean per mu, free of weed damage to the plot, yield reached 315 pounds.