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2006—2011年,对双季超级稻的高产形成规律及配套栽培技术进行了系统研究。研究表明,在保证穗数的基础上提高每穗粒数和结实率、增加中后期的养分吸收和物质生产是双季超级稻高产的关键,与之相对应的高产栽培策略是前期早发、中期壮秆和后期强源。阐述双季超级稻早蘖壮秆强源高产栽培技术体系的内涵,从够苗期、生育前期叶片含氮率和叶色差、一次枝梗分化期大茎蘖数、衰老频度和抽穗后SPAD值下降幅度等方面,提出早蘖壮秆强源的相应群体指标;从移栽叶龄、密度、肥料运筹和水分管理等方面,提出明确的技术指标。实践证明,双季超级稻早蘖壮秆强源高产栽培技术具有高产稳产和提高肥料利用率的显著效果。
From 2006 to 2011, we studied systematically the law of high-yielding and cultivation of double-cropped super rice. The results showed that increasing grain number and seed setting rate per spike and increasing nutrient absorption and material production in the middle and later stages were the key to the high yield of double cropping rice on the basis of the guaranteed spike number. Correspondingly, the high yielding cultivation strategy was premature infancy, Mid-term strong stalks and late strong source. This paper describes the connotation of high-yielding and high-yielding cultivation technology system for double-season super rice with strong tiller and strong stem. From the seedling stage, the leaf nitrogen content and leaf color difference, the number of large tillers, the frequency of senescence and SPAD The value of decline and other aspects, put forward the tiller and stalk strong source of the corresponding group of indicators; from the transplanted leaf age, density, fertilizer management and water management and other aspects, the clear technical indicators. Practice has proved that double-season super rice tiller stalks strong source of high-yielding cultivation techniques with high and stable yield and improve the utilization of fertilizer significant effect.