中国油料作物学报2011，Vol.33Issue(2)：152-156,5.
钾肥用量对油菜产量及钾素利用效率的影响
Effect of potassium application rate on yield and fertilizer -potassium utilization efficiency in rapeseed
摘要
Abstract
Eleven field experiments were carried out to study the effects of potassium (K) application rate on rapeseed yield, nutrient concentration, nutrient accumulation and fertilizer - K use efficiency in Hubei province during 2007 -2008. Compared to no K treatment, the average yield of the treatment with K20 rates 60,120 and 180kg/hm2 increased by 16.9％, 21.6％ and 19.8％, with average K content increased by 2.7％, 9.0％ and 7.8％, total K uptake by the aboveground parts of rapeseed average increased by 42.9％, 63.0％ and 82.2％,respectively. The results illustrated that K application increased the yield, K concentration and accumulation of rapeseed significantly. With K application rate increase, K agronomic use efficiency ( AUE), partial factor productivity (PFP), apparent recovery efficiency (ARE) and physiological use efficiency (PUE) of rapeseed were decreased significantly. However, K requirement for 100kg seeds of rapeseed was increased with K application rate increase. Based on rapeseed yield and K use efficiency, the optimum fertilizer application was 60 ～ 120kg/hm2 of K20 in Hubei province.关键词
油菜/钾肥用量/产量/钾肥利用率Key words
Rapeseed (Brassica napus L. )/ Potassium application rate: Yield/ Potassium use efficiency分类
农业科技引用本文复制引用
李银水,鲁剑巍,廖星,邹娟,李小坤,余常兵,马常宝,高祥照..钾肥用量对油菜产量及钾素利用效率的影响[J].中国油料作物学报,2011,33(2):152-156,5.基金项目
国家"十一五"科技支撑计划重点项目(2010BAD01B05,2008BADA4B08,2006BAD21B03) （2010BAD01B05,2008BADA4B08,2006BAD21B03）
教育部新世纪人才项目(NCET-07-0345) （NCET-07-0345）
国际植物营养研究所合作项目(IPNI-Hubei-30) （IPNI-Hubei-30）
油菜产业技术体系建设(nycytx-005) （nycytx-005）
