热带作物学报2011，Vol.32Issue(9)：1624-1629,6.DOI:10.3969/j.issn.1000-2561.2011.09.007
福建结球甘蓝氮磷钾施肥指标研究
Nitrogen, Phosphor and Potassium Fertilization Index for Kale Cabbage in Fujian
摘要
Abstract
Based on the results of 59 field experiments of kale cabbage response to N, P and K fertilization in recent years, NPK fertilization indices for head cabbage in Fujian Province were developed. The results showed that there were linear positive correlation between the yield applying balanced fertilization and the yield in blank. The average contribution rate of soil nutrients to yield of head cabbage was 51.0%, the average increased yield of N, P and K applications was 40.4%, 11.6% and 15.0% respectively. The critical indices of alkali -hydrolyzable nitrogen, Olsen-P and available K for high yield of head cabbage was 207 mg/kg, 71 mg/kg and 157 mg/kg respectively. In general, the economic application rates was N 238 kg/hm2, P2O5 70kg/hm2 and K2O 192kg/hm2, and their proportion was 1':0.29: 0.81. Relationship between soil testing value and their fertilization recommendation met with exponent regression equation. The model may be used for fertilization recommendation according to soil testing value and played the role of different application rate in different soil fertility levels.关键词
结球甘蓝/氮磷钾/临界指标/推荐施肥Key words
Kale cabbage/ N, P and K/ Critical index/ Fertilization recommendation分类
农业科技引用本文复制引用
章明清,李娟,孔庆波,姚宝全,沈金泉..福建结球甘蓝氮磷钾施肥指标研究[J].热带作物学报,2011,32(9):1624-1629,6.基金项目
国际植物营养研究所(IPNI)合作项目(Fujian-09) （IPNI）
福建省科技厅公益科研专项(No 2009R10032-4) （No 2009R10032-4）
国家测土配方施肥项目(NQ 2005-2010). （NQ 2005-2010）
