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总结了三系杂交稻亲本D汕A(B)和丛广 4 1A(B)的原种提纯工作。 1989～ 1993年 ,采用“一选三圃”法提纯D汕A(B) ,D汕A(B)纯度分别从 99.8%和 99.98%提高到 99.98%和 99.997% ;1994年至今 ,采用“一选二圃法”对丛广 4 1A(B)提纯 ,其纯度分别由 96 .5 4 %和 99.9%提高到 99.9%和 99.99% ;均达到了国家和广东省制定的质量标准
Summarized the parental purification of three-line hybrid rice parents D Shan A (B) and Cong Guang 4 1A (B). From 1989 to 1993, the purity of Danshan A (B) and Danshan A (B) was increased from 99.8% and 99.98% to 99.98% and 99.998%, respectively, using “one selection and three nurseries” The results showed that the purity of Cong Cong 4A 1A (B) was increased from 96.54% and 99.9% to 99.9% and 99.99%, respectively. Both of them met the quality standards set by the state and Guangdong Province