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通过三年（六季）的试验，从品种的生育期、群体生长发育、形态生理特征、农艺性状、干物质积累以及后期形成高产的优势和最终的实收产量进行比较，试验结果表明，适合湘乡地区双季稻超高产栽培的品种搭配方式是迟配迟的方式增产潜力大，每公顷产量可达１７ｔ左右；适合迟配迟的品种有湘早籼１９号、Ｖ５６、Ｖ４８、Ｖ４６、培两优特青；迟配中或中配迟的品种搭配方式每公顷产量也可达１６ｔ以上，中熟品种有新香优７１、Ｖ７７；作为超高产栽培，中配中的品种搭配方式不宜采用。
Through the experiment of three years (six seasons), the author compared the growth period, population growth and development, morphological and physiological characteristics, agronomic traits, dry matter accumulation and the yield advantage and the final yield in the late stage. The results showed that the suitable Xiangxiang double cropping rice super high-yielding varieties with late hybrid approach late yield potential, yield per hectare up to about 17t; suitable for late varieties with Xiangsanxian 19, V56, V48, V46, Peili You Teqing green; late or in the match with the late varieties with a yield of up to 16t per hectare, medium-maturing varieties Xinxiang You 71, V77; as super-high-yielding cultivation, with medium varieties should not match use.