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我所1975年春季在海南进行了水稻杂种大面积制种,基本上获得了成功。29个组合,25.5亩,收杂种1492.1斤,平均亩产58.5斤。其中二九南一号A×IR24,面积6.14亩,收杂种634.5斤,平均亩产103.3斤,高的0.98亩,亩产127斤。珍汕97A×IR24,面积0.14亩,收杂种20.4斤,平均亩产达到145.7斤。通过丰产栽培鉴定,杂种种籽纯度在98％以上。现根据我们试验的结果,谈谈在海南春季制种的几点体会。
In the spring of 1975, I conducted a large-scale seed production of rice hybrids in Hainan, basically succeeding. 29 combinations, 25.5 acres, 1492.1 pounds received hybrids, the average yield 58.5 kg. Among them, No. 29 South No. A × IR24 has an area of 6.14 mu and 634.5 kg of hybrids, with an average yield of 103.3 kg, a high of 0.98 mu and a yield of 127 kg per mu. Zhen Shan 97A × IR24, an area of 0.14 acres, 20.4 pounds of hybrids received, the average yield reached 145.7 kg. Through high-yielding cultivation identification, hybrid seed purity of more than 98%. Now based on the results of our experiments, talk about some of the experience of seed production in Hainan in spring.