安徽沿江稻区单季杂交水稻高产肥水运筹技术分析

目的]推广水稻的高产高效栽培技术，促进农业可持续发展。方法]通过在安徽沿江稻区开展杂交水稻高产栽培技术的肥水运筹示范提出了水稻的高产肥水运作模型。结果]试验单季杂交稻的平均产量为10575kg／hm^2。试验秧苗生长健壮，单株分蘖和单株绿叶多，根系入土较浅，主茎扁且基宽适度，二次分蘖率高，叶蘖同伸性好，物质积累多。试验水稻个体发育健壮，根系发生量大，茎基粗壮。试验水稻群体田间封行期推迟。通风透光好。试验水稻始穗至齐穗的间．隔期为2～3d，基本同时抽穗，主茎带穗多，每穗颖花总量发育充足，相对均衡性较好。灌浆结实期干物质输转谷穗率高，乳熟生长阶段完成理论产量积累60％以上。结论]该研究为单季杂交水稻在安徽沿江稻区的高产栽培奠定了良好的基础。

Analysis on the High-yield Fertilizer and Water Application Technology of Single Cropping Hybrid Rice in the Riparian Rice Region of Anhui

Objective] The aim was to popularize the highyield and high-efficiency cultivation technology of rice and promote agricultural sustainable development.Method] The high-yield fertilizer and water application model of rice were suggested through developing the demonstration of fertilizer and water application in high-yield cultivation technology of hybrid rice in the riparian rice region of Anhui.Result] The average yield of tested single cropping hybrid rice was 10 575 kg/hm2.The tested seedlings grew robustly,their tillers and green leaves per plant were many,their root systems were relatively shallow,their main stems were flat and their base widths were moderate,their secondary tillering rates were high,their synchronous development of leaves and tillers was good and the dry matter accumulated in them was much.The tested rice individuals grew well and had many root systems grown out and their stem bases were stocky.The field crop closure stage of tested rice populations was delayed and their aeration and light transmission were good.The plastochron between initial heading and full heading of tested rice was 2-3 d,and their headings were basically simultaneous,there were many panicles on the main stem,the total glumous flowers per panicle developed adequately and their relative proportionality was better.The proportion of dry matter transferred into panicles in filling and fruiting stage was high and the dry matter accumulated in milk stage accounted for more than 60% of theoretical yield accumulation.Conclusion] The research layed a good foundation for the high-yield cultivation of single cropping hybrid rice in in the riparian rice region of Anhui.