摘要
用五因素（1/2）二次正交旋转组合设计研究施氮量、基肥施氮比例、磷肥施用量、钾肥施用量及移栽密度对优良粳稻群体穗实粒数和单位面积内总实粒数的影响。结果表明：成熟期群体穗实粒数和单位面积内总实粒数之间对农艺措施的要求是一对矛盾;实现666.7 m2产量大于600 kg的主要农艺措施是：施氮量为：9.61～9.93kg/666.7 m2;基肥施氮比例为：47.38%～50.72%;磷肥施用量：4.05～4.39 kg/666.7 m2;钾肥施用量：6.49～6.94kg/666.7 m2;移栽密度：1.70～1.76万窝/666.7 m2。
Quadratic orthogonal rotating combination design of five factors （ 1/2 ） was used to investigate the effect of N, P and K application rate, basal fertilizer proportion and planting density on rice grain numbers per ear and total grain number per unit area in alpine region. The results indicated that the fertilizer applica-tion techniques for grain numbers per ear and total grain number per unit area were contradictory. The best yield （600 kg/666. 7 m2 ） was obtained from that N, P, K application rate were 9. 61~ 9. 93 kg /666. 7 m2 , 4. 05 ~ 4. 39 kg / 666. 7 m2 and 6. 49 ~ 6. 94 kg /666. 7 m2 respectively; basal N ratio 47. 38% ~50. 72% and transplanting density 1. 70 ＆#215; 104 ~ 1. 76 ＆#215; 104 holes /666. 7 m2 .
出处
《山地农业生物学报》
2014年第4期10-14,共5页
Journal of Mountain Agriculture and Biology
基金
贵州省科技成果重点推广计划"粳稻新品种毕粳44示范推广"[黔科合成字(2013)5070]
关键词
粳稻
施肥技术
穗实粒
总实粒
Alpine region
fertilization technique
grain numbers per ear
total grain number per unit area
