早春利用地膜覆盖在很大程度上提高了农作物的产量.请你从有利于种子萌�生长的角度考�上述措施的主要作用是 A保持肥料b保温c Template




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tomski早春利用地膜覆盖在很大程度上提高了农作物的产量.请你从有利于种子萌�生长的角度考�上述措施的主要作用是 a保持肥料b保温c coloring