菌草与大豆混种降低大豆产量但提高系统经济效益——以中国援卢旺达农业技术示范项目为例

摘要

Soybean ( Glycine max) and giant Juncao grass ( Pennisetum giganteum) were cultivated to compare production and eco-nomic benefits between traditional soybean monoculture and polyculture of soybean-Juncao on terrace system in Rwanda. Results showed that soybean-Juncao mixed cropping had lower soybean production ( 9 355 kg?hm-1?a-1 ) than traditional soybean mono-culture(P0.05).收割后的巨菌草无论是直接出售还是用来培养紫孢平菇,大豆与菌草混种系统的经济效益都显著高于大豆单种系统(P<0.01).大豆与菌草混种虽然降低大豆产量,但提高系统的经济效益.