1.选育经过及试种情况“78—1000”是湖南省农科院水稻所1974年用湘矮早8号作母本、湘矮早9号作父本杂交,于1978年第七代定型育成的一个迟熟早籼品种。1979年参加品系鉴定,生育期比对照种广陆矮 4号早2天,比湘矮早 9号早7天,亩产940斤,比广陆矮 4号增产19.3%,比湘矮早 9号增产2 1. Breeding and test situation “78-1000” is the Hunan Provincial Academy of Agricultural Sciences rice in 1974 with Xiang short morning 8 as the female parent, Xiang short morning 9 as the male parent hybrid in 1978, the seventh generation A bred early maturity indica varieties. In 1979 to participate in the identification of lines, growth period than the control Guangluai 4 as early as 2 days, 9 days earlier than Xiangxiang short morning 9 days, 940 kg per mu, compared with Guanglu short 4 yield 19.3%, 9% No. 2 increase production