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一、组合来源及主要特性; 汕优66是用“明恢66”与珍汕97A配制的新组合。明恢66是“(IR30×圭630)F4×IR24-51”组合后代选育而成,性状整齐、稳定、抗瘟对野败型不育系具有强恢复力。汕优66是基本营养型的野败籼型杂优组合。作连晚种植全生育期126天左右,比汕优63早熟5-7天,作单季种植143天左右。株高90cm左右,株形集散适中、冠层叶直立,每亩有效穗18万左右,穗长21cm,每穗总粒数120粒左右,结实率80-86％,千
First, the combination of sources and main features; Shanyou 66 is “Minghui 66” and Zhenshan 97A formulated a new combination. Minghui 66 is a “(IR30 × Kyu 630) F4 × IR24-51” combination of offspring breeding, neat, stable, blast resistant wild-type sterile line has a strong resilience. Shanyou 66 is a basic nutritional wild-type indica hybrid combination. For even late planting 126 days of full growth period, early maturing Shanyou 63 5-7 days, about 143 days for single-season planting. Plant height of about 90cm, plant-shaped distribution of moderate, canopy erect, per acre 180,000 effective spike, spike length 21cm, the total number of grains per spike 120, seed setting rate of 80-86%, 1000