“双白矮”是中山县农科所于1975年早造用“IR_(24)”ד二白矮”育成的晚造抗寒中熟高产良种。1978年品比,名列首位,平均亩产608.1斤,比对照种“二白矮”482.5斤增产26％,这极显著值。1979年春海南岛南繁11亩(单双株植),平均亩产1026.2斤,同年晚造中山县试种4000多亩(单双株植)普遍表现良好。1980年中山县推广面积6.2万亩,外县引种约7万多亩,均获得好收成。中山县三角公社种植1.18万亩,平均亩产750至800斤,比“二白矮”每亩多收80—100斤。其中亩产超千斤的有50亩。1981年中山县推广20多万亩,约占稻田面积30％,新会、台山、南海、斗门、顺德、番禺和东莞等县也有较大面积引种。1981年是特殊灾年,“双白矮”比“二白 “Double White Short” is a late-made middle-aged winter cold-maturing and high-yielding variety bred by Zhongshan Agricultural Science Institute in 1975 as early as “IR_ (24)” × “White Short”. 1978 than in the first place, the average per-mu yield of 608.1 kg, 482.5 kg more than the control species of “white white short” an increase of 26%, which is extremely significant. Spring 1979 South Hainan Island, 11 acres (single double plant), the average yield of 1026.2 kg, the same year made Zhongshan County trial planting 4,000 mu (single and double plants) generally good performance. Zhongshan County in 1980 to promote the area of ​​62,000 acres, the introduction of about 70,000 acres outside the county, have received a good harvest. Zhongshan County commune planted 11,800 acres, an average of 750 to 800 pounds per mu, more than the “white white” overmuch 80-100 pounds per acre. There are 50 mu of super-kilograms per mu. Zhongshan County in 1981 to promote more than 20 million mu, accounting for about 30% of paddy fields, Xinhui, Taishan, Nanhai, Doumen, Shunde, Panyu and Dongguan counties also have a larger area of ​​introduction. 1981 is a special disaster, “double white short” than "two white