为探明“三高一保”栽培模式下双季超级稻的产量形成特征,在江西省南昌以超级早稻金优458和超级晚稻淦鑫688为材料进行3年5季的田间试验,比较了“三高一保”栽培和常规栽培下产量、库容、干物质生产与分配、根系生长及养分吸收特性差异。结果表明,与常规栽培相比,“三高一保”栽培显著提高了双季超级稻产量,早、晚稻产量分别提高了15.1%和18.2%(P<0.05);“三高一保”栽培不仅能显著增加双季超级稻的颖花量和库容量,而且能提高全生育期的LAI、生育后期叶片净光合速率,增加干物质生产量,同时提高茎鞘输出率,增加穗部干物质分配的比重。“三高一保”栽培促进根系生长,提高全生育期根系干物质量和根系活力,增加养分吸收量。由此可见,双季超级稻“三高一保”栽培可以扩库增源促流、促进根系生长和养分吸收,这是其增产的重要生理基础。 In order to find out the characteristics of the yield of double cropping super rice under the cultivation pattern of “three high and one high”, field experiment was conducted in Nanchang of Jiangxi Province for three years and five seasons with super early rice Jinyou 458 and super late rice Ganxin 688 as materials, The differences in yield, storage capacity, dry matter production and distribution, root growth and nutrient absorption characteristics under “Three High and One Guarantee” cultivation and conventional cultivation were compared. The results showed that the yield of double super rice increased significantly by 15.1% and 18.2%, respectively (P <0.05), compared with that of conventional cultivation, The cultivation can not only significantly increase the spikelet capacity and storage capacity of double cropping super rice, but also increase the LAI during the whole growth period, the net photosynthetic rate of leaves at the later growing stage, increase the dry matter production, at the same time increase the output of stem and sheath and increase Spike dry matter distribution of the proportion. “Three high and one security ” Cultivation to promote root growth, improve the whole growth period root dry matter and root activity, increase nutrient absorption. Thus, double super rice “three high and one security ” cultivation can expand the source of the reservoir to promote flow, promote root growth and nutrient uptake, which is an important physiological basis for its yield.