The maximum yield of corn kernel and straw crude protein in unit area is critical factor to determine the optimum harvesting maturity stage of corn.
单位面积上玉米子实和秸秆粗蛋白最大产量，是确定玉米最适收获时期的关键因素。
The maximum yield of corn kernel and straw crude protein in unit area is critical factor to determine the optimum harvesting maturity stage of corn.
单位面积上玉米子实和秸秆粗蛋白最大产量，是确定玉米最适收获时期的关键因素。
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