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近几年来,我县旱坡地推广了麦、苞(玉米)、豆的三熟间套种植方式。一般种植方法是5—6尺宽一带,秋播小麦2.5—3尺,预留行冬炕,翌年春播玉米,小麦收割后夏播大豆。在这种种植方式下,小麦和春玉米的产量都提高很快,可是夏播间作的大豆产量不高,一般亩产只50—60斤,高的不过100多斤。分析间作夏大豆低产的原因,主要是:(1)品种丰产性差,生育期过长;(2)每亩株数不足;(3)不施底肥和追肥。为了探求夏播间作大豆高产技术,最近两年我们进行了品种比较和高产栽培试验。间作高产栽培试验平均亩产152斤,最高达254.3斤。现将取得高产的经验简介如下。
In recent years, my county arid slope to promote wheat, bracts (corn), beans, three sets of intercropping methods. The general planting method is 5-6 feet wide area, autumn wheat 2.5-3 feet, reserved for winter kang, the following spring sowing corn, summer sowing wheat after harvest. Under this planting method, both the output of wheat and spring maize increased rapidly. However, the yield of soybean between summer sown crops was not high, with only 50-60 kg of mu per mu and 100 kg of peanut per mu. Analysis of the reasons for intercropping summer soybean low yield, mainly: (1) poor variety of high yield, long growth period; (2) per acre less than the number of trees; (3) without base fertilizer and dressing. In order to explore the summer sowing for high-yielding soybean technology, the last two years we conducted a variety comparison and high-yielding cultivation experiments. Intercropping high yield cultivation test average mu produce 152 pounds, up to 254.3 pounds. Now get high yield of experience are as follows.