稻田高效三熟制晚季水稻的综合配套栽培技术研究

Study on Comprehensive Cultural Practices of Later sowing and Transplanting Rice in Medial Hilly Region of Sichuan

采用三因素五水平二次正交旋转组合设计研究了川中丘陵区水田高效三熟制下晚播晚栽水稻的配套栽培技术。分析了本田移栽密度、氮化肥施用量、钾肥施用量对产量和产量构成因素的作用及影响，并建立了相应的数学模型。结果表明试验因素对产量的影响大小依次为氮肥用量＞ 移栽密度＞ 钾肥用量，较高的施氮量及较高的移栽密度利于形成足穗，从而达到高产，并得出了产量＞ ６０００ｋｇ／ｈｍ２ 的栽培方案。

A field experiment of quadratic orthogonal regressive rotation design of three factors was conducted. The mathematical models of transplanting density and application of nitrogen fertilizer and potash fertilizer for yield and yield components of rice were established and analyzed. The results show that the contribution of three factors to yield is: application of nitrogen fertilizer>transplanting density>application of potash fertilizer. At the same time, the scheme of cultural practices for yield above 6000kg/hm 2 is obtained.