生态学杂志2012，Vol.31Issue(4)：856-861,6.
氮磷钾配比与用量对湘杂油763产量和经济效益的影响
Effects of nitrogen, phosphorus and potassium application ratio and rate on yield and economic benefit of winter rape cultivar Xiangzayou 763
摘要
Abstract
In order to select a suitable NPK application ratio and rate for winter rape cultivar Xiangzayou 763 in the main production areas of Hunan Province, South-central China, two field experiments were conducted to study the effects of different NPK ratio and dosage on the biological yield, seed yield, and oil content of the cultivar in two consecutive years 2008-2010, with the economic benefits analyzed. A higher seed yield was obtained when the NPK ratio was N : P2 O5 : K2O=1 : 0.50 : 0.50 (treatment B) and N : P2O5 : K2O=1 : 0. 43 : 0. 57 (treatment G) , with the seed production reached 2231 and 2065 kg ? Hm~2, respectively. Treatment B had a significantly higher seed yield than other treatments except treatment G. Nitrogen fertilizer had the greatest effect on the increase of the seed yield, followed by phosphorus fertilizer, and potassium fertilizer. Similar trend was observed in the oil content and biological yield. In treatment B, the seed output was 9816. 97 yuan ? Hm~2, fertilizer investment was only 1641. 23 yuan ? hnT2, and fertilization efficiency was 6741. 34 yuan ? Hm , with the ratio of output to input being 4. 11. It was suggested that the most suitable NPK application ratio for winter rape was N : P2 O5: K2O=1 : 0.50 : 0.50, and the optimal application rate of N, P2O5 and K2O was 180, 90, and 90 kg ? Hm~ , respectively.关键词
氮磷钾配比/产量/经济效益Key words
N/P/K ratio/ yield/ economic benefit.分类
农业科技引用本文复制引用
彭建伟,田昌,宋海星,谭太龙,官春云,刘强,荣湘民,周旋..氮磷钾配比与用量对湘杂油763产量和经济效益的影响[J].生态学杂志,2012,31(4):856-861,6.基金项目
国家油菜产业技术体系建设项目(00509)、油菜现代产业技术体系建设07-12、国家项目(2006 BAD21B03)、双低油菜丰产增效栽培技术研究与示范06-10、湖南省重大专项(2009FJ1006-1)双季稻区油菜特早熟育种与机械化生产技术研究与示范09-11和油菜产业化研究与示范项目(2009FJ1006-3)资助. （00509）
