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小麦是英国主要的粮食作物,面积200万公顷,年产量8500万吨。首先要问的第一个问题是小麦的最高产量能达到多少? 第二个问题是引起产量波动的原因是什么?为什么达到最高产量的机会非常少?
Wheat is a major British food crop with an area of 2 million hectares and an annual output of 85 million tons. The first question to ask is how much of the maximum yield can be reached for wheat? The second question is what causes the output fluctuations and what is the minimum chance of reaching the highest levels?