高产和超高产品种的物质生产优势表现在生育中期和后期，其生育中期和后期群体生长率显著高于低产品种。

The production superiority of high-yield and super high-yield rice was exhibited during the middle and the late growth stage.

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高产和超高产品种的物质生产优势表现在生育中期和后期，其生育中期和后期群体生长率显著高于低产品种。

The production superiority of high-yield and super high-yield rice was exhibited during the middle and the late growth stage.

youdao