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一、津选3-19-8的选育过程及其优点“津选3-19-8”是从“试验60天”中,经过四代系统选育而成。1978年从“试验60天”中选出6个优良单株进行自交留种。1981年进行品系比较试验,选出四个性状一致的优良自交系3-19-8-1-1、3-19-8-1-2、3-19-8-1-5和3-19-8-3-2。1982年将上述四个优良自交系混合采用,将其选育编号定为“津选3-19-8”进行品比试验,折合亩产5269斤,比主栽品种“荷兰雪球”增产37.6％。1983年在稻改园的低肥田上进行品比试验,
First, Jin election 3-19-8 breeding process and its advantages “Jin election 3-19-8” is from the “test 60 days”, after four generations of system breeding. In 1978 from the “test 60 days” to elect six excellent individuals for selfing seed. In 1981, a comparative experiment was carried out on the lines to select four excellent inbred lines 3-19-8-1-1, 3-19-8-1-2, 3-19-8-1-5 and 3- 19 - 8 - 3 - 2. In 1982, the above four fine inbred lines were used in combination, and their selection number was designated as “Jin Xuan 3-19-8” for the ratio test, equivalent to 5269 kg per mu, Planting varieties “Dutch snowball” increase of 37.6%. In 1983, the rice field to the low fertility field trials,