湖南农业大学学报(自然科学版)2016,Vol.42Issue(4):349-353,5.
施氮量和氮肥运筹模式对糯稻养分吸收积累和氮肥利用率的影响
Effect of nitrogen rates and nitrogen application patterns on nutrient accumulation and nitrogen use efficiency of glutinous rice
摘要
Abstract
An inbred glutinous rice of Yuxiangnuo 1 was used as experimental material, three nitrogen rates (N0, 0 kg/hm2;N120, 120 kg/hm2; N180, 180 kg/hm2) and two nitrogen application patterns (pattern A: 70% was applied as basal fertilizer and 30% in early tillering stage; pattern B: 50% N as basal fertilizer, 20% and 30% in early tillering and panicle initiation stage respectively) were designed to study the effect of nitrogen rates and nitrogen application patterns on nutrient accumulation and nitrogen use efficiency of glutinous rice. The results showed that: There was significantly difference in uptakes of nitrogen (N), phosphorus (P) and potassium (K) of glutinous rice among different nitrogen rate treatments. The uptakes of N, P, K of pattern B were less than those of pattern A. The demands of N, P, K per 1 000 kg grains of pattern B were 14.1%, 10.2% and 7.8% lower than those of pattern A, respectively. Grain yield of glutinous rice increased with N application rate increasing, while N use efficiency decreased with N application rate increasing. There was not significantly difference in N use efficiency of glutinous rice between pattern A and B. The results suggest that the N application rate of 120 kg/hm2 with B nitrogen application pattern is the optimal choice for glutinous rice production.关键词
糯稻/氮肥运筹/养分积累/氮肥利用率/产量Key words
glutinous rice/nitrogen management/nitrogen use efficiency/grain yield分类
农业科技引用本文复制引用
蒋鹏,熊洪,朱永川,张林,周兴兵,刘茂,郭晓艺,徐富贤..施氮量和氮肥运筹模式对糯稻养分吸收积累和氮肥利用率的影响[J].湖南农业大学学报(自然科学版),2016,42(4):349-353,5.基金项目
四川省科学技术厅科技支撑计划项目(2014NZ0128);四川省农科院中试熟化(大竹院县合作)项目;西南水稻创新体系建设项目 (2014NZ0128)