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72#
发表于 2011-12-20 19:11
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本帖最后由 sdjgyt12 于 2011-12-20 19:22 编辑
hw
A cash crop is a crop grown for money.400 years ago the first cash crop for European colonists in North America was tobacco.
American Indians were already growing it.Then in 1612,an Englishman named John Ralfe found it would grow well in Virginia and sell profitably in England,says tobacco.org.
But tobacco kills millions every years.Farmers face increasing government restrictions on tobacco use.They also face less demand from developed countries and more competition from developing ones.Some farms now grow niche crops instead of or in addition to tobacco.
Niche crops are aimed at particular market but choosing what to plant can be difficult.Perfessor Tony Johnston at Middle Tennessee State University says most tobacco farms are relatively small. |
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