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高肥力条件下夏玉米大豆间混作的互补主要表现为叶层镶嵌,群体内光分布均匀,间作玉米消光系数小,风、温状况改善。竞争的重要因子是光而不是土壤养分。大豆竞争指数:混作<2∶2间作<3∶2间作:竞争强度:混作>2∶2间作>3∶2间作。间作竞争结果是相互补偿;混作竞争结果是相互抑制。互补与竞争对生殖器官效应大于营养器官。最终,间混比联合单作籽粒产量增加16-27%,产值增加7-12%,蛋白质产量高2.1-8.2公斤/亩,但籽粒产量略低于单作玉米。
Under the condition of high fertility, the complementarity of summer maize and soybean was the mosaic of leaf layer, the light distribution in the population was uniform, the extinction coefficient of intercropping corn was small, and the wind and temperature conditions were improved. An important factor in competition is light rather than soil nutrients. Soybean Competition Index: Mixed <2:2 intercropping <3: intercropping: competitive intensity: mixed> 2: 2 intercropping> 3: 2 intercropping. The result of inter-competition is mutual compensation; the result of mixed competition is mutual restraint. Complementarity and competition effect on reproductive organs than vegetative organs. Finally, the yield was increased by 16-27%, the output value increased by 7-12%, and the protein yield was 2.1-8.2 kg / acre, but the grain yield was slightly lower than that of monoculture corn.