湖南农业大学学报（自然科学版）2018，Vol.44Issue(2)：188-192,5.DOI:10.13331/j.cnki.jhau.2018.02.014
长期有机无机肥配施对双季稻产量及氮肥利用率的影响
Effect of long–term organic and inorganic fertilizer combined application on yield and nitrogen use efficiency in double rice
摘要
Abstract
To understand the effect of six common available combined fertilizers on the yield and nitrogen (N) use efficiency in double–rice, we carried out a field analysis in a long–term experiment base. The six fertilizers contained the organic and/or inorganic components: one with no N fertilizer (regarded as control, CK), urea fertilizer with no organic fertilizer (T1), 20% N fertilizer with pig manure (T2), 20% N fertilizer with biogas residue and slurry (T3), 20% N fertilizer with pig manure compost (T4), 20% total N fertilizer with green manure by early rice or straw in late rice (T5). The results showed, organic and inorganic fertilizers combined application had significantly improvement in rice grain yield, grains number and effective panicle number when compared to CK. And, compared to urea fertilizer treatment, grain yield of T4 treatment increased by 9.05% in early rice and 13.56% in late rice respectively, which is the best among all treatments with the highest N agronomic efficiency(16.59, 16.23 kg/kg), N uptake efficiency (38.96%, 37.71%), N partial productivity(55.44, 51.16 kg/kg) in early and late rice, and physiological efficiency(43.02 kg/kg) in late rice. This study revealed long–term combined application of organic and inorganic fertilizers can improve double–rice yield and N use efficiency, in particular, the 20% N fertilizer with pig manure compost has the best performance.关键词
双季稻/有机肥/无机肥/产量/氮肥利用率Key words
double–rice/organic manures/inorganic fertilizer/yield/nitrogen use efficiency分类
农业科技引用本文复制引用
谭力彰,黎炜彬,黄思怡,袁浩凌,杨兰,刘强,谢桂先..长期有机无机肥配施对双季稻产量及氮肥利用率的影响[J].湖南农业大学学报（自然科学版）,2018,44(2):188-192,5.基金项目
国家"十三五"重点研发计划项目(2016YFD0201200) （2016YFD0201200）
湖南省重点研发计划项目(2016JC2032) （2016JC2032）
