优质水稻新品种龙稻7号的选育及栽培技术

Breeding and Cultivation Techniques of Rice Variety Longdao No.7 with High Quality

龙稻7号(哈02-220)是从五优稻1号的变异植株中经过系统选育而成。主茎12片叶,生育天数为137 d,需要活动积温2 500℃,各种综合抗性较强。两年区域试验平均产量为7 585.2 kg/hm2,比对照品种垦稻10号,平均增产6.6%。生产试验平均产量为8 100.2 kg/hm2,比对照品种垦稻10号,平均增产10.1%。米质优,各项指标均达到国家优质米标准。2005年审定推广。

Longdao No. 7（Ha 02-220） was selected from variated plant of rice Wuyoudao No. 1, Its number of leaves on main stem was twelve, maturation period was 137 d, active accumulated temperature was 2 500 ℃, and all kinds of integrated resistance were obviously strong. Average yield of two years regional trial and one year production trial were 7 585.2 kg/hm^2 and 8 100. 2 kg/hm^2 respectively, and average increased yield were 6.6% and 10. 1% compared with control Kendao No. 10, respectively. All kinds of items reached state high quality rice standard and examined and approved in 2005.