In the fall, they eat a significant portion of the province's sunflower crop.
到了秋天，它们会吃掉该省相当一部分的向日葵。
Mangoes in Africa, as elsewhere, often fall prey to fruit flies, which destroy about 40% of the continent's crop.
非洲的芒果和世界各地一样经常会变成果蝇的盘中餐。这些果蝇大概可以毁掉大路上40%的农作物。
In Argentina, the soyabean crop is forecast to fall almost 20 per cent this year owing to drought and pests, raising pressure on US supplies.
在阿根廷，由于干旱和虫灾，预计今年大豆收成将下降近两成，这加大了美国供应的压力。
In this way if one crop gets diseased, or one harvest succumbs to drought, or one hillside is flooded, they have alternatives to fall back on.
凭借这种方法，如果作物生了病，或者收成受到干旱的影响，或者遭遇山洪，他们都有替代的方法可供依靠。
They say the fall in crop production is causing food prices to rise.
他们指出，粮食产量下降正导致价格上涨。
The super weeds boost costs and cut crop yields for U.S. farmers starting their fall harvest this month.
这些杂草增加了农民的成本并且降低了美国农民本月秋收的产量。
Winter wheat is the most important food crop in North China Plain, normally, it sown along with barely in early fall after the harvesting of summer crops such as broomcorn and soybeans.
冬小麦是华北平原最重要的粮食作物，通常是和大麦一起，在秋初继收成夏季作物如高粱、大豆之后播种的。
The latest crop of handbags are setting new trends this fall.
最新一批手提包正在引领今秋的潮流。
No-till works best in sandy soils, but in the heavier clay soils, fall traditional plowing is required to break the soil up enough for adequate crop yields.
无耕最好是用在砂土中，不过在重质黏土中，秋天传统的耕作需要去充分地打散泥土为了庄稼足够的产量。
Crop yields, affected by temperature and water stress as well as length of growing season fall by 10-25% and are less predictable as key regions shift from a warming to a cooling trend.
温度变化、水资源短缺以及生长期缩短10- 25%诸因素都将影响农作物产量，由于主要地区都会降温，未来产量更难预测。
It says "climate change could cause hunger for millions with a sharp fall in crop yields in Africa."
里面说“气候变化将给非洲带来农作物的急剧减产和亿万人群的饥饿。”
It says "climate change could cause hunger for millions with a sharp fall in crop yields in Africa."
里面说“气候变化将给非洲带来农作物的急剧减产和亿万人群的饥饿。”
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