中国农业科学2013，Vol.46Issue(10)：2058-2066,9.DOI:10.3864/j.issn.0578-1752.2013.10.011
基于“3414”试验的川中丘陵区油菜施肥指标体系构建
Establishiment of Fertilization Recommendation Indexes of Rapeseed Soil Based on the "3414" Field Experiments in the Middle of Sichuan Hilly Regions
摘要
Abstract
[Objective] To provide a theoretical basis for balanced fertilization of rapeseed production in the middle of Sichuan hilly regions,abundance and deficiency indexes of soil nutrient and fertilization recommendation indexes were established.[Method] Data were analyzed based on the "3414" experiments of rapeseed in the field from 2005 to 2009.Making use of plentiful-lack of soil nutrient as an index,soil available phosphorus (AP) and available potassium (AK) were divided into five levels on the basis of different relative yields.Nitrogen fertilizer application rate (N) on average was estimated based on the method of total quantity control,while phosphorus fertilizer (P2O5) and potassium fertilizer application rates (K2O) were calculated by the method of fertilizer response function.[Result] Regional optimal application rate of chemical fertilizer N on average is (170±50) kg·hm-2.Phosphorus fertilizer application rates (P2O5) are 100-120,70-100,50-70,30-50,＜30 kg·hm2 (AP＜5,5-15,15-25,25-45 and ＞45mg·kg-1),while potassium fertilizer application rates (K2O) are 90-110,70-90,50-70,30-50,＜30 kg·hm2 (AK＜30,30-60,60-120,120-240 and ＞ 240 mg·kg1).[Conclusion] Compared with the fertilization recommendation rate calculated by the original system,the fertilization recommendation rate above suggests that nitrogen and phosphorus fertilizer application rates should be decreased,while potassium fertilizer application rates ought to be increased.关键词
油菜/相对产量/养分丰缺指标/推荐施肥Key words
rape/ relative yield/ nutrient plentiful-lack index/ fertilization recommendation引用本文复制引用
黄亿,李廷轩,张锡洲,戢林..基于“3414”试验的川中丘陵区油菜施肥指标体系构建[J].中国农业科学,2013,46(10):2058-2066,9.基金项目
国家自然科学基金(40901138)、国家科技支撑计划子课题(2008BAD98B03)、四川省科技厅应用基础项目(2010JY0083)、2005-2009农业部测土配方施肥项目 （40901138）
