“特优63”(龙特浦A×明恢63)是漳州市农科所1986年育成的杂交水稻新组合。在闽南稻区可早,晚兼用。其他地区可作单晚或双晚种植,尤其适宜中稻种植。 (一)特A的主要特性特A是用龙特甫从野败V_(41)转育而成,经过5年6代回交、二代繁殖育成的龙特甫A,(简称特A),特A具下述特点:(1)穗大粒多。1987年晚季在长太制种,特A平均穗粒数115.9粒,千粒重27—28克,比珍汕97平均穗粒数78.3粒,千粒重25-26克,分别增加37.6粒和2克左右。(2)包颈短,包粒少,在不喷“九二○”情况下,一般特A包颈穗1/5-1/4,汕A包颈1/3-1/2 “Youyou 63” (Longtepu A × Minghui 63) is a new hybrid rice breeding project made by Zhangzhou Agricultural Institute in 1986. In southern Fujian rice can be early and late. Other areas can be used for single or double night planting, especially suitable for medium-cropping. (A) the main characteristics of special A special A is Longtu Fu from wild defeated V_ (41) into, after 5 years of 6 generations of back, the second generation breeding Long Te Fu A, (referred to as special A) , Special A has the following characteristics: (1) Spike large grain. In the late 1987, when the seeds were planted too long, the average number of spikes was 115.9 and the grain weight was 27-28g. The average number of spikes was 78.3 and the weight of grains was 25-26g, increasing by 37.6 and 2g respectively . (2) the package neck is short and there are few enveloping particles. In the case of not spraying “920”, the special A package includes 1 / 5-1 / 4 of the neck and 1 / 3-1 / 2 of the package