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为探索大面积间作大豆的高产栽培技术,1990年我们在灵武县郭家桥乡清水沟村种植的小麦套玉米间作大豆田中进行了大豆三叶期打顶试验。结果表明,大豆三叶期打顶能有效地改变株型,形成较为均衡而等高的双主茎、三鼎枝株型,植株变矮,分校增多增粗,单株结荚数增多,每荚粒数多且饱满,增产效果十分显著。
In order to explore the high-yielding cultivation technology of large-area intercropped soybean, in 1990 we conducted soybean three-leaf stage top-hatching experiment in soybean intercropping with wheat and corn intercropping in Qingshuitou Village, Guojiaqiao Township, Lingwu County. The results showed that the three-leaf stage of soybean can effectively change the plant type, forming a more balanced and equal double main stem, Sang Ding branches plant type, shorter plants, branches increased thickening, pods per plant increased, each Seed pod number and full, yield-producing effect is very significant.