咸三单交是我县种子公司用引进的咸大203自交系作母本、330自交系作父本,于1974年杂交培育而成。经县多次比较试验、均名列前茅,亩产340—420公斤,较“恩单2号”增产三至四成;较“七三单交”增产一成左右。1984年12月24日,经省品种审定委员会审定通过、并命名为“成三单交”,可在山区适宜地方推广。 Salty three single pay is my county seed companies with the introduction of salty 203 inbred lines as the female parent, 330 inbred lines for the father of the original, was cultivated in 1974 by hybridization. The counties have compared and tested many times, ranking the top, with a per-mu yield of 340-420 kilograms, an increase of 30% to 40% over the “En Dan 2”; a 10% increase over the “Seventy-Three Direct Exchanges”. December 24, 1984, approved by the Provincial Variety Approval Committee and named “into three single pay”, can be suitable for local promotion in the mountains.