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水稻杂种制种,是水稻杂种优势利用工作的重要组成部分,杂种制得好不好;纯不纯,直接关系到杂种产量的高低,因此,制种是水稻杂种生产上不容忽视的中心环节之一,务必引起高度重视。一般栽培一百亩杂种,需要制种田三至五亩,不育系繁殖田一至二分,与常规稻种留种田5％的比例相当。目前制种的情况是,二九南一号A与IR24制种,一般亩产杂种50—60斤,最高的亩产达到127斤,还可收恢复系父本种子300—400斤,最高的可收570斤。如武冈县农科所今年夏季制种6亩,平均亩产杂种61.8斤,父本570斤。今后水稻杂种制种主要是大队农科队和种子队于夏季进行,为了便于大家掌握制种技术,提高制种产量,迅速发展水稻杂种生产,我们根据近两年摸索和收集的一些资料归纳如下,供参考。
Hybrid rice seed production is an important part of rice heterosis utilization, and hybrids are not well prepared. Pure impure is directly related to the level of hybrid yield. Therefore, seed production is one of the key links that can not be ignored in rice hybrid production , Be sure to attach great importance. Generally cultivated a hundred acres of hybrids, the need for farming three to five acres, sterile male sterile fields one to two points, and conventional rice farming to stay in the same proportion of 5%. At present, the seed production situation is that 29th South No.1 A and IR24 are planted with a yield of 50-60 kg per mu per mu and the highest yield of 127 kg per mu and 300-400 kg of recovered parental seeds, the highest Can receive 570 pounds. Such as Wugang County Institute of Agriculture this year, planting 6 acres, an average of 61.8 pounds per mu hybrids, the father of 570 pounds. In the future, rice hybrids are mainly produced by brigades and teams of agricultural teams and seed teams in the summer. In order to facilitate everyone to master seed production techniques and improve seed production and rapid development of hybrid rice production, some information we have explored and collected in the past two years is summarized as follows ,for reference.