福建农业学报2016，Vol.31Issue(12)：1294-1298,5.DOI:10.19303/j.issn.1008-0384.2016.12.007
闽中丘陵区中稻氮磷钾肥效及其适宜用量研究
Effect of NPK Fertilization and Recommendation for Single Cropping Rice in Hilly Regions in Central Fujian
摘要
Abstract
For single cropping rice cultivation in the hilly regions of central Fujian,1 5 field experiments based on a“3414”design on NPK fertilization were conducted.The results showed that the yield was strongly affected by the existing soil fertility,with a significant linear correlation between the fertilizer applied and the resulting rice output. The average yield by Treatment 6,which had a balanced fertilization at the rate of 8 397 kg·hm-2 ,showed the average yield increases of 1 6.2%,6.5%,and 8.3%,by the N,P,and K applications,respectively.Its net revenue reached 21,663 yuan·hm-2 ,with the increases of 14.4%,4.5%,and 6.3% due to N,P,and K fertilizations, respectively.The results from the experiments on the high-,moderate- and low-yield fields were subject to regression analysis and modeling.It appeared that the average application rates of N,P2 O5 and K2 O at 21 9,95 and 1 54 kg·hm-2 ,in the proportion of 1 ∶0.43 ∶0.70,would be appropriate for a single cropping rice in the hilly areas.Nonetheless,since significant differences on the fertilization effect were found in fields of varied fertilities, optimization for specific site would be needed.In other words,in practice,fertilization must take the existing soil fertility into consideration in order to reach the target production objectives.关键词
中稻/氮磷钾/增产/推荐施肥Key words
single cropping rice/N,P and K/increasing yield/recommended fertilization分类
农业科技引用本文复制引用
章赞德..闽中丘陵区中稻氮磷钾肥效及其适宜用量研究[J].福建农业学报,2016,31(12):1294-1298,5.基金项目
农业部测土配方施肥补贴项目(2008-2015) （2008-2015）
