夏大豆密植高产型育种途径探讨杨青春苑保军吕广伦耿臻（河南省周口地区农科所·４６６００１）大豆产量的高低最终取决于单位面积上的产量。如何协调个体与群体之间的发育关系，充分利用地力与提高光能利用率，是众多育种家一直探讨的问题。如何实现大豆产量的突破，国内... Breeding approaches of high-yielding summer soybean planting with high yield Yang Qingchun Yuan Baojun Lu Guanglun Geng Zhen (Zhoukou Prefecture Institute of Agricultural Sciences, 466001) The level of soybean production ultimately depends on the yield per unit area. How to coordinate the developmental relationship between individuals and groups, make full use of the soil fertility and improve the utilization rate of light energy are the problems that many breeders have been discussing. How to achieve a breakthrough in soybean production, domestic ...