粮食产量翻了两番。
粮食产量激增。
一些分析人士预测，粮食产量需要提高50%才能维持目前的水平。
Some analysts estimate that food production will need to be raised by 50 percent to maintain current levels.
在每次涨潮时，富含营养的水被带到湿地，使高粮食产量有可能实现。
Nutrient-rich water is brought to the wetlands during each high tide, making a high rate of food production possible.
除了粮食产量之外，还有许多不同的方法来衡量农业表现：能源使用、环境成本、水的纯度、碳足迹和生物多样性。
There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs, water purity, carbon footprint and biodiversity.
1944年，他来到墨西哥，辞去了杜邦公司的一份好工作，目的是提高粮食产量，为这些处于半饥饿状态的人们提供食物。
He had come to Mexico in 1944, leaving a good job at DuPont, to increase grain yields, and to bring these half-starving people food.
农业比狩猎和采集的人均粮食产量更高，因此人们能够抚养更多的孩子。
Farming produced more food per person than hunting and gathering, so people were able to raise more children.
该国的粮食产量仅占其所食粮食的60%左右，比1980年代末的近四分之三有所下降。
The country produces only about 60 per cent of the food it eats, down from almost three quarters in the late 1980s.
全年粮食产量有望再获丰收。
The output of grain for the whole year is expected to have another bumperharvest.
全年粮食产量有望再获丰收。
The output of grain for the whole year is expected to have another bumper harvest.
今年粮食产量增加了4倍。
The production of grain has been increased by four times this year.
粮食产量猛涨了4倍。
这些国家可以通过开垦新的耕地来增加粮食产量。
These countries could presumably boost food output by taking in some new land.
他说，其实世界粮食产量足以满足不断增长的人口。
He said that the world produces enough food to feed a growing population.
他们指出，粮食产量下降正导致价格上涨。
They say the fall in crop production is causing food prices to rise.
粮食需求在增加，但粮食产量增幅却在下降
Food Demand Is Growing While Growth Rates for Yields Are Falling
杰伊·费明力提：美国25%的粮食产量来自中央谷。
Jay Famiglietti: the Central Valley is responsible for 25% of the food that is consumed in the United States.
在非洲，冲突时期人均粮食产量平均减少大约12.5%。
In Africa, per capita food production dropped by an average of around 12.5 percent during times of conflict.
Alinovi说尽管有雨，这些冲突会让粮食产量下降。
Alinovi said the conflict could keep food production down, despite the new rains.
随着全球粮食产量的提高，“我们必须保护好水和空气质量。
As the world steps up production, "We have to protect the water and air quality.
原因是，气候变化直接影像水的供应，粮食产量和疾病蔓延。
The indirect harm, through its impact on water supplies, crop yields and disease is hugely greater.
干旱给中国的粮食产量笼罩了阴影，约43%的冬作物受影响。
The drought is casting a shadow over China's wheat production, as almost 43 percent of the winter crop has been affected.
他还说，华南洪水会怎样影响粮食产量和食品价格目前还未明朗。
It's now yet clear how floods in southern China may affect the grain harvest and food prices, Shen added.
他还说，华南洪水会怎样影响粮食产量和食品价格目前还未明朗。
It's now yet clear how floods in southern China may affect the grain harvest and food prices, Shen added.
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