摘要
为了探索杂交水稻制种父母本机械移栽合适行比,以组合科S/华占为材料,设置父母本行比4∶20、4∶30机械移栽2个处理,以行比2∶10人工移栽为对照。结果表明:父母本行比4∶20机械移栽群体每公顷颖花数达172 793 880粒,父母本颖花比为1∶2.54,母本平均结实率为33.42%,实际产量为2 323.20 kg/hm2。结果显示行比4∶20符合杂交水稻制种绳索授粉方式下父母本机械移栽高产制种群体的要求。
In order to find the moderate row ratio of the mechanized transplanting population in hybrid rice seeds produc- tion ,the row ratio of 4：20 and 4：30 transplanted by machine was set as test groups, and the article transplanting population of 2：10 as control with the Ke S/Huazhan as experimental material. The result show that the spikelets per area,the radio of male and female spikelets, the average out - crossing rate, the yield of the population with row ratio of 4：20 were 172 793 880/hm^2 , 1 ： 2. 54,33.42% , 2 323.20 kg/hm^2 respectively. The population constitution with row ratio of 4 ： 20 transplanted by the machine with supplementaU pollination by rope meets the demands of hybrid rice seeds production.
出处
《作物研究》
2015年第4期362-365,373,共5页
Crop Research
基金
国家科技支撑课题(2014BAD06B07)
关键词
杂交水稻
制种
父母本
机械移栽
行比
hybrid rice
seeds production
male and female population
mechanized transplanting
row ratio
