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1.
In the course of world industrialization, resources have been reduced and environment is deteriorating. This results from two factors. One is growth of world population.World population went up to 1 billion in 1800, 2 billion in 1930; accordingly, it cost 130 years to grow 1 billion. Andthen, it reached 3 billion in 1960, 4 billion in 1975, 5 billion in 1987 and 6 billion in 1999. In the period of 1960-1999,  相似文献   

2.
Tourist agriculture, based on agriculture, is a new cross combination of agriculture and tourism from 1970s. It has appeared some original features by now, and we should use the successful experience of the tourist agriculture in Taiwan of China for reference to standardize all the aspects of work. Support it more in policy, fund,technology, and propaganda, and strengthen the combination of the program of city and suburb to promote the development of the tourist agriculture in Mianyang.  相似文献   

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