南方农业学报2012，Vol.43Issue(1)：62-66,5.DOI:10.3969/j:issn.2095-1191.2012.01.62
广西桂北地区油菜施肥效应研究
Effects of N, P and K fertilizer on rapeseed in north areas of Guangxi
摘要
Abstract
[Objective]An experiment was conducted to observe effects of different fertilizer mixtures on yield of rape seeds in rice growing areas of northern Guangxi in order to find out most economical application rate of fertilizers. [ Method ] Various combinations of different amount of N (89.8, 150.0, 179.6, 269.4 and 359.2 kg/ha), P2O5(60.0, 107.4, 120.0, 240.0 kg/ha)and K2O(60.0, 107.4, 120.0, 240.0 kg/ha)were applied in rice field. Ternary quadratic and unitary quadratic fertilizer effect models were established and optimized on the basis of experimental data to find out the best fertilizer combination. [Result]Treatment No. 13 (N3P3K4)produced the highest yield of rapeseed (1911.2 kg/ha), which increased by 760.1% over control (N0P0K0). Treatment No.2(N3P3K3) recorded the highest ratio of output to input(15.9) with 3744 Yuan/ha revenue increment. [Conclusion]According to the fitting equation of fertilizer effect, the N, P2O5 and K2O application rates supporting maximum yield of rapeseed were 239.6,120.3 and 188.9 kg/ha, respectively, and the most economical application rates of N, P2O5 and K2O were 208.9, 98.1 and 173 kg/ha, respectively.关键词
油菜/肥效试验/氮磷钾/施肥模型/施肥量Key words
rapeseed/ fertilizer effect experiment/ N, P, K/ fertilization model/ fertilizing amount分类
农业科技引用本文复制引用
张宗急,钟丽,刘助生,张松桂,廖云云,杨行海..广西桂北地区油菜施肥效应研究[J].南方农业学报,2012,43(1):62-66,5.基金项目
现代农业产业技术体系建设专项资金资助(CARS-13) （CARS-13）
