农地需补充氮元素420g则需含NH4NO3 80%的化肥多少克?

Central European Metropolis often can see the agricultural parks and open space,in contrast,North America in the city saw few of farmland
2美国十组结婚的人里有四组以离婚告终,德国的离婚数虽然比美国少很多,但一九七五年开始到一九九年倍增了
Ten groups of 2 USA married in four groups in divorce,divorce in Germany than America number though much less,but starting in 1975 one nine nine years doubled

1）The conversion of farmers as sideline businesses business owners and its relation to the growth of the rural land market
2) Sideline businesses is a global phenomenon.From the microeconomic view,sideline businesses is a rational choice for farmers; from the macroeconomic view,sideline businesses are inimical to rural land transfer.If the rural land market is to develop under the condition of farmers running sideline businesses,then the farmers should be encouraged to convert into either Type One farmers,who are non-farmers,or Type Two farmers,full-time farmers or leaders in the farming business.This change can lead to a breakthrough in the rural land market,and can also develop the much-needed market leaders.
3)Key Terms:Sideline Businesses; Conversion of Farmers with Sideline Businesses; Rural Land Market
应该蛮准的,毕竟我也是出生在美国～
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