华南四省(广东、广西、福建、海南)杂交水稻协作组在广东省茂名市进行杂交水稻新组合区试和大区表证。1991年早造参试组合6个,我校选育的“K9广12”(KS-9×广12)组合产量居第二名。1992年早造参试组合7个,以“三系”组合“汕优63”作对照。“K9广12”亩产540.2 kg,比对照增产111.1 kg,增产率为25,89％,产量跃居榜首。该 Hybrid Rice Cooperatives in Four Provinces of South China (Guangdong, Guangxi, Fujian and Hainan) Conducted Regional Trial of New Hybrid Rice Combination Test and Region Card in Maoming City, Guangdong Province. In early 1991, a total of 6 combinations of testing and testing were completed, and the output of “K9 Guang 12” (KS-9 × Guang 12) selected by our school ranked second. In early 1992, a total of 7 test combinations were set up, taking the “three lines” combination “Shanyou 63” as a control. “K9 wide 12” yield 540.2 kg per mu, yield 111.1 kg more than the control, yield 25,89% yield topped the list. This