鄂西南高山地区水稻新组合区域试验
Regional Trial of New Rice Combinations in the Mountainous Areas of Southwest Hubei

为鄂西南高山地区筛选适宜的早中熟水稻新品种，在湖北省利川市设置正规的田间小区试验。结果表明，长农优2521、恩优07196、桃优1831、珞优568、明早优673、宜香优109六个品种适宜在海拔1100 m左右的高海拔地区推广。这六个品种亩产都在500 kg以上，比对照绵5优142增产显著；生育期适中，未超过170天，能在8月20日前安全齐穗，受“秋风”(秋季低温的俗称)危害导致减产的可能性小；高抗稻瘟病，适宜在稻瘟病高发的利川市及气候相似区域大面积推广。
In order to screen suitable early and middle maturing rice varieties in the mountainous areas of southwest Hubei, a formal field plot test was set up in Lichuan City, Hubei Province. The results showed that six varieties, Changnongyou 2521, Enyou 07196, Taoyou 1831, Luoyou 568, Mingzaoyou 673 and Yixiangyou 109, were suitable for popularization in high altitude areas with an altitude of about 1100 m. The yield per mu of these six varieties is more than 500kg, which is significantly higher than that of the control Mianyou 142; The growth period is moderate, not more than 170 days, and can be safely eared before August 20. The possibility of yield reduction caused by “autumn wind” (commonly known as autumn low temperature) is small; high resistance to rice blast, suitable for large-scale promotion in Lichuan city with high incidence of rice blast and regions with similar climate.