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１９９２年在中国云南及其它２０多个国家或地区同时进行ＩＵＲＯＮ（国际陆稻观察圃）试验。根据ＩＲＲＩ（国际水稻所）汇总资料分析表明：国外中秆、中早熟材料在云南种植后仍然表现为中秆、中早熟；各试点（除孟加拉国外）粳稻比籼稻更适应陆稻生产条件，粳稻的综合评价优于籼稻；株高、生育期在云南与各试点的变化是有规律的，依此规律提出相关方程供云南引种时参考。云南陆稻引种策略应以中秆、中早熟粳型陆稻为主。
In 1992, IURON (International Upland Observation Nursery) trial was conducted in Yunnan, China and more than 20 other countries. According to the summary data of IRRI (International Rice Research Institute), the data showed that the middle and early-maturing materials of middle-aged and medium-early-maturity varieties in China were still medium-stalked and middle-early matured. Japonica rice in all experimental sites except for Bangladesh was more adaptable to the conditions of Upland rice than japonica rice The comprehensive evaluation was better than that of indica rice. The variation of plant height and growth period in Yunnan and each pilot was regular. According to this law, the relevant equation was proposed for Yunnan introduction. The introduction strategy of Upland rice in Yunnan should be mainly medium-stalk, middle-early maturity japonica rice.