一、影响大豆产量的因素 1.不合理种植因素的影响:由于对大豆的重视不够,多数地方都是采用玉米和大豆的小比例间种,导致大豆产量得不到提高,播种面积逐年下降。 2.不合理密度的影响:目前西北半山区大豆种植依然是传统的拉拉稀播种方式,加之在铲蹚过程中又舍不得间苗和疏苗,平均公顷保苗都在25—30万株,分枝少的和分枝多的没有区分开。为了使大豆的植株间保持合理的密度,分枝少的 First, the impact of soybean production factors 1. Irrational planting factors: Due to insufficient attention to soybeans, most places are the use of corn and soybean small-scale intercropping, resulting in soybean yield was not increased, sown area decreased year by year. 2. Irrational density effects: At present, the cultivation of soybean in the Mid-Western Mid-levels is still the traditional larva sowing method. In addition, in the process of shoveling the shoals, There are no differences between the branches and the branches. In order to maintain a reasonable density of soybean plants, less branching