Ways of improving crop yield per unit area and the countermeasures.
提高作物单产的途径与对策。
There is potential for increasing the yield per unit area on the existing cultivated land.
提高现有耕地单位面积产量有潜力。
Piles foresees accurately increases 30% the alfalfa or the corn straw, but effectively enhances the yield per unit of area.
堆料中添加30%的苜蓿草或玉米秸杆，可有效地提高单位面积产量。
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