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1·Ways of improving crop yield per unit area and the countermeasures.

提高作物单产的途径与对策。

2·The perfect individual plant traits do not mean the high yield per unit area.

单株性状好并不代表单位面积产量高。

3·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。

4·But food yield per unit is very not tall still, still have very large increase production latent capacity.

但粮食单位面积产量还不很高，仍有很大的增产潜力。

5·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。

6·Because of the diminishing opportunity to expand cultivated land, researches have been mostly focused on the rise of yield per unit area.

由于扩大耕地面积的可能性越来越小，研究已主要集中于提高单位面积产量。

7·The food yield per unit water is an important index, which indicate the efficiency of the irrigation water use and status of food production.

单位水量粮食生产能力是综合反映灌溉用水水平和粮食生产状况的重要指标。

8·An important method of increasing rice yield per unit area is to improve the rice-planting mechanization lever and use advanced planting technology.

提高水稻单产的一项重要措施是提高水稻种植机械化水平，即采用先进的种植技术。

9·In 1959, various factors such as reduction of sown areas, less yield per unit area and natural disasters contributed to the decrease in grain output.

1959年开始，由于播种面积减少、单产下降、自然灾害等原因，粮食产量连年下滑。

10·The paper puts forward the quantization formula by regarding fictitious yield per unit area as one way of contrasting and evaluating the economic results of aquaculture.

本文提出以虚拟单位产量作为比较与评价水产养殖经济效果的一种方法，给出了量化公式。