[目的]研究播期和混播比例对玉米-秣食豆群体内小气候的影响.[方法]以玉米和秣食豆为试验材料,按秣食豆与玉米同期播种和延后播种2个播期,玉米与秣食豆3个混播比例进行混播试验.[结果]混播时期对作物群体内散射光有显著影响,对总入射光、温度和相对湿度无显著影响.混播比例对群体内光照和温度、湿度影响显著,随秣食豆比例的增加,群体内各层次的总入射光和散射光均显著减少,温度减低,湿度增加;而且生育前期随秣食豆比例的增加,群体内温度显著降低,生育后期相对湿度显著增加.[结论]播期和混播比例对群体内小气候有显著影响.混作复合群体通过改变田间小气候,影响作物的生理活动.%[Objective] To study the effects of sowing time and mixed sowing ratio on micro-climate in Zea mays-Glycine max population.[Method]Taking Zea mays-Glycine max as experimental materials,mixed seeding test was conducted by 2 kinds of sowing date (simultaneous sowing and delayed sowing),3 kinds of Zea mays-Glycine max ratio.[Result] The sowing time had a significant effect on the scattering light of Zea mays population.It had no significant effect on the total incident light,temperature and relative humidity.The proportion of mixed sowing had significant effect on the illumination,temperature and humidity.With the increase of Glycine max proportion,the total incident light and scattered light of different groups were significantly reduced,temperature was reduced and humidity was increased.The temperature was significantly decreased with the increase of proportion of Glycine max in early growth stage.Relative humidity increased significantly in late growth stage.[Conclusion] The proportion and time of mixed sowing have significant effect on micro-climate.Mixed compound population affects the physiological activities of crops by changing micro-climate in the field.
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