陆稻国外引种规律初探

PRELIMINARY STUDIES ON THE INTRODUCTIONOF UPLAND RICE FROM ABROAD

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。

Based upon analysis of Ihternational Upland rice Observational Nursery in 1992(IURON-1992)in Yunnan and other more than 20 countries,it was found that intermediate height and medium heading acceccions could express their height and heading characters in Simao as same as in other tropical countries.Except Bangladesh, plant height and heading date of JaPOnica upland rice were more adaptable to upland land circumstance than that of indica upland rice and the score of phenotypic acceptability(PAcp)of Japonica upland rice was better than that of Indica upland rice.There existed variation law of plant height, heading time between Yunnan and IRRI,Bangladesh,IITA,CIAT and variation equations were formed. Meanwhile,the strategy of introducing of upland rice with intermediate plant height,early-medium heading was proposed.