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荣兴农场1978年制黎明 A×C_(57)、丰锦 A×C_(57),杂交种1040亩,平均亩产杂交种子402.4斤。1979年又制杂交种746亩,总产320400斤,平均亩产429.5斤,其中,黎明 A×C_(54)制种601亩,总产272700斤,平均亩产453.7斤;丰锦 A×C_(57)145亩,总产47700斤,平均亩产329斤。现将两年大面积制种采取的措施介绍如下:一、根据父母本生育期安排好父母本的播种期。根据恢复系 C_(57)生育期长,抽穗慢,花粉量大的特点,采取早播、早插,促进早生快发。两年来,C_(57)育苗,第一期为4月1日播
Rongxing Farm Dawn in 1978, A × C_ (57), Fengjin A × C_ (57), 1040 acres of hybrids, the average yield of 402.4 pounds of hybrid seed per mu. In 1979, 746 mu of hybrids were produced, with a total output of 320400 kg and an average yield of 429.5 kg per mu, of which 601 mu was planted in dawn A × C_ (54) with a total output of 272700 kg and an average yield of 453.7 kg per mu; Fengjin A × C_ (57) 145 acres, a total output of 47,700 pounds, an average yield of 329 pounds. Now two years of large-scale seed production measures taken are described below: First, according to the parents of this growth period arranged parents of the sowing period. According to the characteristics of restorer line C_ (57) such as long growth period, slow heading, and large amount of pollen, early sowing and early sowing were adopted to promote early-onset quick hair growth. Two years, C_ (57) nursery, the first phase of April 1 broadcast