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杂交水稻制种与不育系繁殖是水稻杂种优势利用工作中的重要一环。制种与繁殖产量的高低及纯度与否,直接关系到生产上的应用价值。我场今年开始引种南优系统水稻“三系”。配制南优2号(二九南一号A×二九南一号B)3.8亩,收获杂种115斤,平均亩产30.5斤。其中1.3亩花期相遇较好,单产34.3斤。繁殖“不育系”(二九南一号A×二九南一号B)9.5亩,收获“不育系”673斤,平均单产70.8斤。其中5.4亩单产达98.6斤。由此看来,制种、繁殖产量都很不高。因此,如何掌握制种繁殖技术,提高产量,是目前急需解决的问题。现将我场在制种、繁殖工作中,初步摸索的一些经验和采取的技术措施介绍如
Hybrid rice and sterile line breeding is an important part of rice heterosis utilization. Seed production and breeding output level and purity or not, is directly related to the production of the application value. My field this year introduced the Nanyou system rice “three lines.” Preparation Nam You 2 (29 South No. A two nine South No. 1 B) 3.8 acres, 115 pounds of hybrids harvested, the average yield of 30.5 pounds. Of which 1.3 acres of flowering met better, yield 34.3 pounds. Breeding “sterile line” (two nine South One A two nine South One B) 9.5 acres, harvest “sterile line” 673 pounds, the average yield of 70.8 pounds. 5.4 mu of which yield 98.6 pounds. Seen in this light, seed production, breeding yield are not high. Therefore, how to master the seed breeding technology and increase the output is an urgent problem to be solved. Now my field in the seed, breeding work, preliminary exploration of some of the experiences and technical measures introduced