摘要
1991～1992年,在四川省梁平县天竺乡采用四因素五水平正交旋转组合设计方法,研究了密度及氮、磷、钾施用量对杂交稻产量的综合效益,并求得高产、低耗的最优综合农艺措施,建立了3套不同产量水平的优化模型方案。A方案:产量8250～8700Kg/ha的农艺措施为:27.89～29.23万窝/ha、施N111.87～123.19kg/ha、P_2O_5 39.41～46.39kg/ha、K_2O 55.09～64.69kg/ha;B:方案:产量8700～9000kg/ha的农艺措施为:24.57～27.50万窝/ha、施N137.61～155.69kg/ha、P_2O_5 36.07～52.32kg/ha、K_2O 98.86～108.99Kg/ha;C方案:产量高于9000kg/ha农艺措施为:22.74～25.63万窝/ha、施N 164.44～178.69Kg/ha、P_2O_5 41.22～58.91Kg/ha、K_2O 111.09～118.44Kg/ha。
In 1991—92, in Liangping county of Sichuan province, the method of orthogonal rotation design with four factors and five levels was used to investigate the comprehensive effects of plant density and N, P and K rates on the yield of hybrid rice. Optimized agronomic measures for high yield and low input were recommended and three optimal models were established for the target yield of 8, 250—8,700, 8,700—9,000 and above 9,000 kg grain/ha.
出处
《西南农业大学学报（自然科学版）》
CSCD
1993年第6期471-476,共6页
Journal of Southwest Agricultural University
关键词
杂交稻
中稻
高产
栽培
hybridization middle-season rice
cultural technique
optimization modes
hilly regions of cast Sichuan
