农业环境科学学报Issue(10)：1940-1947,8.DOI:10.11654/jaes.2014.10.010
太湖竺山湾小流域果园养分投入特征及其土壤肥力状况分析
Nutrient Inputs and Soil Fertility Status in Orchards of Zhushan Bay in Taihu Lake Watershed
摘要
Abstract
Planting around the Taihu Lake contributes greatly to its water pollution. In this research, both literature and questionnaire sur-veys(farmer interview)were used to analyze nutrient inputs to orchards, and typical soil samples were collected to evaluate soil fertility sta-tus in the surrounding five towns in Zhushan Bay in Taihu Lake Watershed. Results showed that average rates of total N, P and K inputs were N 522, P2O5 674 and K2O 462 kg·hm-2, respectively, in orchards in Taihu Lake Watershed. Of which, organic fertilizer inputs account-ed for 51.3%、58.3% and 44.0% of total N, P and K application, respectively. Chemical fertilizer was mainly NPK compound fertilizer, while organic fertilizer was chicken and cattle manure. Soil organic matter, total N, P and K content ranged from appropriate to very rich. Available P and K contents were generally at a rich level. The average surplus of N, P and K were as high as N 320、P2O5 42 and K2O 108 kg·hm-2, respectively. High inputs of N and P to soils inevitably increased the risk of N and P migration into water. It is necessary to develop effective techniques to control N and P inputs while maintaining fruit production in orchard in Taihu Lake Watershed.关键词
太湖流域/果园/氮/磷/钾投入/有机肥/养分盈余Key words
Taihu Lake Watershed/orchard/N,P and K application/organic fertilizer/nutrient surplus分类
资源环境引用本文复制引用
程谊,贾云生,汪玉,赵旭,杨林章,王慎强..太湖竺山湾小流域果园养分投入特征及其土壤肥力状况分析[J].农业环境科学学报,2014,(10):1940-1947,8.基金项目
国家科技支撑计划课题（2012BAD15B03）；国家水专项课题（2012ZX07101-004）；江苏省农业科技自主创新资金项目[CX（14）2050]；国家“948”项目 （）
