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田间试验结果表明,改小麦套种玉米的传统窄幅模式为中、宽幅模式,在玉米株高与小麦株高持平前,小麦带光照略增强,玉米带光温环境显著改善,平均透光率增加11.0％～11.5％,叶温提高0.4℃;当玉米株高超过小麦株高后对小麦的遮荫影响加重。中幅、宽幅套种均可改善小麦和玉米的营养生长状况,促进小麦幼穗和玉米果穗分化,但一定程度影响了两作粒重的提高。随套种幅宽的增加,小麦单元产量下降13.89％～22.58％,玉米单元和两作整体产量分别提高30.00％～37.71％和11.47％～12.26％,系统的产量稳定指数降低0.0125～0.0338。
The results of field experiments showed that the traditional narrow pattern of wheat intercropping with maize was medium and wide pattern. Before the height of maize was uniform with the plant height of wheat, the light of wheat was slightly increased and the light and temperature of corn was significantly improved. The average light transmittance Increased 11.0% ~ 11.5%, leaf temperature increased by 0.4 ℃; when the height of maize over the height of wheat increased the impact on the shade of wheat. Medium width and wide intercropping could improve the vegetative growth of wheat and maize, and promote the differentiation of young ears and maize. However, it affected the grain weight of two crops to a certain extent. The yield of wheat decreased by 13.89% ~ 22.58% with the increase of interplanting breadth. The yield of corn and two crops increased by 30.00% ~ 37.71% and 11.47% ~ 12.26%, respectively. The yield stability index decreased by 0.0125 ~ 0.0338.