关键词: 三峡库区, 三峡库区, 风化元素, 分布特征, 风化淋溶指标

Abstract: Chuanjiangyou No 3（Jiangyu F32A/Shuhui 527）is a newly-developed high-yielding, fine quality and medium-maturing indica hybrid combination. The yield of Chuanjiangyou No 3 in national regional trials was 9.44 t/hm2 , beyonded the Shanyou 63 9.96％, The quality of rice was excellent. It was registered and released to commercial production in national in 2007. The data of national regional trials of Chuanjiangyou No 3 were analyzed by the correlation between yield traits and yield, multiple regression and path analysis, and then the high-yield cultivation techniques was put forward. The analysis of correlation and path showed that the effective panicle, grain number and 1000-grain weight had a greater effect on rice yield.The high-yield cultivation techniques of Chuanjiangyou No 3 as follows: Based on suitable planting density, certain number of effective panicle, Cultivation strategy for high yield should be taken to put emphasis on large panicles, improve grain number and 1000-grain weight.