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最新推荐文章于 2020-12-15 12:45:37 发布

原创最新推荐文章于 2020-12-15 12:45:37 发布 · 188 阅读

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本文探讨了针对中国干旱及沙质土壤不适宜种植本土作物的问题，通过引进玉米、甜薯等美洲作物，有效改善了北中国的干燥土地及南方水稻区的贫瘠沙地种植条件。玉米能在北方边际山地生长，提供食物、燃料和饲料，而甜薯则成为南方贫困地区的主食。

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Other developments addressed the problems of dry and sandy areas unsuitable for growing China's native crops. New crops such as corn (maize) and sweet potatoes as well as peanuts and tobacco were introduced from the Americas. Corn, for instance, can be grown on the dry soil and marginal hill land of North China, where it is used for food, fuel, and fodder and provides something like one-seventh of the food energy available in the area. The sweet potato, growing in sandy soil and providing more food energy per unit of land than other crops, became the main food of the poor in much of the South China rice area.

这里说了两个