摘要
采用田间小区试验研究不同施肥结构和酸调理剂对由第四纪红土发育的酸性红菜园土的有机质、酸性以及交换性能的影响。结果表明,化肥+石灰(NPK+CaO)和化肥+氧化镁(NPK+MgO)处理的土壤pH极显著高于其他各处理,并且能显著降低土壤交换态铝的含量,而酸化调理剂2号(NPKSR2)对土壤pH的提高又显著高于其他各处理,土壤pH与土壤交换性铝离子呈负相关;各施肥处理均能提高土壤有机质含量,以化肥+菜枯(NPK+OM)处理效果最佳,该处理土壤有机质含量平均达16.71g/kg,酸化调理剂2号(NPKSR2)也能显著提高土壤有机质含量;化肥+石灰(NPK+CaO)和化肥+氧化镁(NPK+MgO)处理提高土壤阳离子交换量(CEC)和有效阳离子交换量(ECEC)效果最显著,酸化调理剂2号(NPKSR2)又优于其他各处理,化肥+氧化镁(NPK+MgO)处理能有效提高土壤交换性盐基离子各组成的含量;化肥(NPK)和酸化调理剂2号(NPKSR2)处理均能缓慢提高蔬菜作物产量,而其他各处理蔬菜作物产量均不稳定。
The field experiment was conducted to study the effects of several fertilization structures and acid conditioners on soil organic,soil acidity and soil exchange capacity in acid red soil developed from Quaternary eed earth.The results showed that NPK+CaO and NPK+MgO treatments could increase soil pH significantly and decrease soil exchangeable Al content effectively.The effect of NPSR2treatment on increasing soil pH was higher than other treatments,soil pH and soil exchangeable Al content had a negative correlation.Each fertilizer treatment could increase soil organic matter,NPK+OM treatment was optimum.The average content of soil organic matter in NPK+OM treatment was 16.71g/kg,NPKSR2treatment also could dramatically improve the content of soil organic matter.NPK+CaO and NPK+ MgO treatments could conspicuously increase soil CEC and ECEC,NPKSR2treatment was better than other treatments,NPK+ MgO treatment could availably increase the content of exchangeable base cations of each composition,NPK and NPKSR2treatments could slowly increase the vegetable crop yields,other treatments about increasing vegetable crop yields were not stable.
出处
《水土保持学报》
CSCD
北大核心
2013年第4期258-262,共5页
Journal of Soil and Water Conservation
基金
国家科技支撑计划项目(2012BAD14B17)
关键词
施肥结构
酸调理剂
红菜园土
有机质
pH
阳离子交换量
fertilization structure
acid conditioner
acid red garden soil
organic matter
pH
CEC
