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我省从1970年开始研究水稻杂种优势利用,1973年实现“三系”配套,1975年继续选育更好的强优势组合,研究制种技术(包括繁殖不育系和配制杂种)。现将我省各协作单位于1975年早稻期间采用的制种技术介绍如下。一、掌握花期相遇是制种的关键1975年我省早稻繁殖“汕”、“矮”等不育系208亩,一般亩产50斤左右,最高的170斤;配制“汕优1号”、
In 1970, the province began to study the utilization of heterosis in rice. In 1973, it achieved the “three lines” facilities. In 1975, the province continued to breed better and stronger dominant combinations and studied seed production techniques (including breeding of sterile lines and hybrids). Now we all units in the province in 1975 during the early rice seed production techniques introduced below. First, to grasp the flowering is the key to seeding encounter In early rice breeding in our province in 1975, “Shantou”, “short” and other CMS 208 acres, generally about 50 pounds per mu, the highest 170 pounds; preparation “Shanyou 1”