关键词: 中条山, 中条山, 铜尾矿库, 自然定居草本植物, TWINSPAN分类, DCA排序, CCA排序

Abstract: To satisfy rice production and development, and select the new hybridized rice combination which is suitable for planting in Nanchong and the upstream region of the Yangtze River, the green channel regional tests on medium-indicar rice variety identification were conducted. The methods of field investigation, plant laboratory test, single harvest, randomized block design and statistical analysis were used in the experiments. The results showed that four varieties ‘( Aofuyou958’, ‘Qianfengyou990’, ‘Liufuyou977’ and ‘Guangliangyou990’) possessed good agronomic and economical characters, as well as disease resistance (especially for rice blast resistance). The yield of ‘Aofuyou958’increased by 12.97% compared with that of ‘Fyou498’, and the difference reached extremely significant level. Compared with that of CK, the yield of ‘Qianfengyou990’,‘Liufuyou977’and‘Guangliangyou990’increased by 9.24% , 5.67% and 4.79% , respectively.‘Aofuyou958’and‘Qianfengyou990’were the ideal varieties in Nanchong National Agricultural Science and Technology Park, with the advantages of high yield, high quality, strong stress resistance and disease resistance. ‘Aofuyou958’ ,‘Qianfengyou990’,‘Liufuyou977’and‘Guangliangyou990’could be popularized as in Nanchong and the upstream region of the Yangtze River.