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辽阳市郊区东京陵公社新城大队,1979年搞杂交粳稻黎明 A×C_(57)制种9.76亩,平均亩产杂交种647.5斤,杂交种纯度为98.7%。杂交种与恢复系混合亩产1017.7斤。主要措施如下:一、严格选地、隔离、精细整地。选择土质肥沃、地势平坦、灌排方便的地块。制种田三面利用自然隔离,一面采取父本隔离,宽42米。为搞好水稻制种,地块规划成方,精细整平土地,达到寸水不漏泥的标准。
In 1979, the new brigade of the Tokyo Tomb commune in Liaoyang Suburb was engaged in the production of 9.76 mu of hybrid rice dawn A × C_ (57) with an average yield of 647.5 kg per mu and a purity of 98.7%. Hybrids and restorers mixed yield 1017.7 kg. The main measures are as follows: First, strictly selected, isolated, fine preparation. Choose fertile soil, flat terrain, irrigation and drainage convenience of land. Farming on three sides to use natural isolation, paternity isolation, 42 meters wide. In order to do a good job of rice seed production, plot planning into a square, fine leveling the land, reaching the standard of water does not leak mud.