明溪县晚稻新品种筛选与综合性状评价OA

In order to screen out the new rice varieties with high yield,disease resistance and high quality suitable for the late rice production in Mingxi County,Fujian Province,11 new late rice varieties were introduced to carry out the comparative screening test in Mingxi County in 2024 with Yiyou 673 as the control.Then,the growth period,agronomic traits,resistance and yield of the tested rice varieties were analyzed.The results showed that the yield of Mingtaiyou 7258,Cuiyou 712 and Chenliangyou 213 ranked the top 3,and the yield was 9 975,9 825 and 9 787.5 kg·hm-2,respectively,which was 7.43%,6.24%and 5.5%higher than that of Yiyou 673(CK),respectively,with significant yield increase effect,good comprehensive performance in the field,excellent agronomic traits,strong disease resistance and stable yield.It was recommended to enter the production test stage.The yields of Heliangyou Xiangzhan,Heliangyou 254 and Yiliangyou 2165 were 9 475.5 kg·hm-2,9 427.5 kg·hm-2 and 9 262.5 kg·hm-2,respectively,which were 2.27%,1.95%and 0.16%higher than those of Yiyou 673(CK),but the yield-increasing effects were not significant.Therefore,it was recommended that these three varieties continued to participate in the regional trials.The yields of Yongyou 99,Tian 3 You Minnongzhan,Zhongyou 508,Ning 12 Youhong 6 and Jingxiang Liangyou Yuhe were all lower than that of Yiyou 673(CK),showing a yield reduction trend.It was recommended that the trials for these varieties should be terminated.