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用 W6184S、W6154S、K-9S、5460S 等两用核不育系与籼、粳稻广泛测交配组500余个,经两年重复鉴定,筛选出品种间和亚种间两系杂交稻强优势组合各一个.1、品种间组合:W6184S/早恢102,属早籼中熟类型。全生育期115～118天,比三系威优49短5天;分蘖力强,穗型大,平均每穗115～120粒,结实率80%,千粒重26克;抗性较强;米的垩白小,外观品质较好;直链淀粉含量24.19%,胶稠度51.5mm,糊化温度中等,糙米粗蛋白质含量9.24%,米质较优良,食味较好;1991年参加江西省两系杂交早稻区试,11个试点平均亩产418.63kg,比威优49(CK)增产4.9%;该组合在省水稻所、滨湖农科所、景德镇等北部试点表现较好,在前2个试点,分别比对照威优49增产33.3%和27.5%;同年在泰和县冠朝乡示范26亩,平均亩产406kg,比三系杂交稻显著增产;1992年在浙江安吉县示范40亩,熟期仅比二九丰晚3天,作二熟制栽培,平均亩产465kg,增产21.13%～39.42%,作三熟制栽培,平均亩产466.79kg,增产54.2%,表现产量高、米质佳、抗性好,深受当地群众欢迎,希望扩大种值.2、亚种间组合:W6184S/029,属一季晚稻类型,作二季晚稻栽培,6月15日左右播种,7月20日左右栽插,9月20日前抽穗,全生育期135天左右;株高95公分,分蘖力较强,平均每穗颖花数169.5个,主穗达300个以上,结实率65%～75%,籽粒充实度较好;抗性强,后期落色好;米质中等;1992年参加江西省两系杂交晚稻联合区试,6个点上平均比对照汕优挂33亩增31.8kg,增产8.9%,居参试组合首位。1991～1992年在铜鼓县作一晚生产示范,亩产500kg 左右,高产栽培条件下亩产550kg 以上,是一个适宜丘陵山区作一季稻栽培的好组合。此外,用 K-9S 与029配的亚种间组合,产量性状与用 W6184S 配的相似,但米质好.
More than 500 biparental male sterile lines such as W6184S, W6154S, K-9S and 5460S were crossed with indica and japonica rice, and more than 500 crossbred rice combinations were screened over two years. The dominant combinations of two-line hybrid rice between cultivars and subspecies Each one .1, a combination of varieties: W6184S / morning restore 102, is an indica indica type. The whole growth period was 115-118 days, shorter than the three lines of Weiyou 49 for 5 days. The tillering ability was strong and the panicle type was large with an average of 115-120 grains per spike, 80% of seed set and 26 grains of 1000-grain weight. Chalky small, good appearance quality; amylose content of 24.19%, gel consistency 51.5mm, gelatinization temperature is moderate, brown rice crude protein content of 9.24%, better quality of rice, taste better; in 1991 to participate in Jiangxi Province two-line hybridization In the early rice area trial, the average yield per mu of the 11 pilot sites was 418.63 kg, an increase of 4.9% over that of the Weiyou 49 (CK). The experiment performed well in the pilot projects of the Provincial Rice Research Institute, Binhu Agricultural Science Research Institute and Jingdezhen. In the first two pilots , 33.3% and 27.5% more than the control Weiyou 49 respectively. In the same year, Guanmu Township of Taihe County demonstrated 26 mu and the average mu yield was 406kg, which was significantly higher than that of the three-line hybrid rice. In 1992, it was 40 mu in Anji County, Zhejiang Province, The average yield per mu was 465kg and the yield was 21.13% -39.42% for three-cropping cultivation, with an average yield of 466.79kg per mu , Good resistance, welcomed by the local people, hoping to expand species value .2, subspecies combinations: W6184S / 029, is a season of late rice type, for the second season late rice cultivation, sown around June 15, July 20 left Planting, September 20 heading date, the whole growth period of about 135 days; 95 cm tall, strong tillering ability, the average number of spikelets per spike 169.5, the main spike of more than 300, the seed setting rate of 65% to 75% In 1992, two-line late hybrid rice combination test was conducted in Jiangxi province. The average of six points was 33.88 kg more than the control Shanyou group, and the yield was 8.9% %, Ranking the first combination of tests. From 1991 to 1992, a demonstration was made in Tonggu County for a night, with a yield of about 500 kg per mu and a yield of over 550 kg per mu under high-yielding cultivation conditions. This is a good combination for one-season rice cultivation in hilly and mountainous areas. In addition, the combination of subspecies K-9S and 029, the yield traits and W6184S with similar, but good quality.