安徽省单季稻超高产栽培群体特征与高产途径

Characterization of Population and Technology of Super-high Yield Cultivation for Single-season Rice in Anhui Province

根据2009—2011年超高产栽培试验研究和攻关示范,探讨了安徽省单季中稻超高产(11.25～12.00 t/hm2)栽培的群体特征及关键技术,提出了主攻大穗扩库容、提高茎蘖成穗率和有效叶面积率、提高穗下节间长度占株高的比例、增强植株抗倒性、提高结实期物质生产能力和抽穗期糖花比、促进物质运转和提高收获指数的技术途径;初步明确了安徽省单季稻超高产栽培的群体质量指标,提出了具有地方特色的单季中稻超高产"阶段栽培法"栽培技术模式。

The population characteristics and key techniques of the super-high yield（11.25 ～ 12.00 t /hm^2） cultivation for single-season rice in Anhui Province were studied on the basis of the pilot tests and demonstrations during 2009 and 2011.The technical approaches were summarized and proposed as targeting big panicles for large sink size,increasing the percentages of productive tillers,effective LAI and the uppermost internode length to plant height,improving lodging resistance and dry matter production capacity in grain-filling stage,raising the content of non-structural carbonhydrates per spikelet at heading stage,enhancing transportation of dry matter in stem and sheath and increasing harvest index.The population quality indices of super-high yield cultivation were clarified,and the super-high yield cultivation method of ″Cultivation by Stages″,suitable for local conditions,was put forward for single-season rice in Anhui Province.