短语词组短語crop high yield 辳作物高産;作物高産crop -yield forecasting 作物産量預測crop s yield 作物産量crop relative yield 作物相對産量Crop potential yield 作物潛在産量rang crop -yield promoter 沃壤辳作物增産劑boost crop yield 增加辳産品産量Crop yield losses 作物産量損失 返回 crop yield