Pot experiment is conducted on two soybean varieties Jinda74 and Jin24.Grain yield and biomass components of the two cultivars either in monoculture or mixture are investigated under three water levels:wet(85% of the field water capacity,85% FWC),mild drought(60% FWC) and drought drought(40% FWC).The result indicates that relatively big size of plant shoot biomass and root system of Jinda74 is advantage for its competition ability but not the monoculture grain yield,while Jin24 weaker in competition ability...
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