我国北宋时期占城稻的推广与发展

占城稻原产于古占城国(今越南中南部)。关于北宋时期占城稻引种时间、推广与发展的成果和意义，因史料不详，众说纷纭。结合当时自然、社会条件，通过分析资料，认为在北宋时期，因人口增加，粮食短缺，政府大力倡导、认真组织，民间积极响应的社会条件下，利用占城稻的耐旱特性，扩大粮食种植面积，达到了增加粮食产量的目的，并为以后江南地区稻麦两熟制的发展莫定了基础。

Growing and Booming of Zhancheng Rice in the Time of Beisong Dynasty

ZhanCheng Rice originated first in Zhan cheng,an old country lied in mid-South of Vietnam.It couldn`t be convinced that when the Rice was introduced and how it was cultivated widely in China during the period of Bei Song Dynasty for lack of enough historical evidences.Based on analyzing the situation from the view of the nature and society at that time ,we can make such a conclusion that ZhanCheng Rice was grown widely in the time of BeiSong Dynasty thanks to the government' s greatly advocating and efficiently conducting,as well as actively pains taking work from all kinds of walks.