摘要
在潮土长期不同施肥定位试验中，在８个不同处理中，以０ｃｍ～２０ｃｍ，２０ｃｍ～４０ｃｍ，４０ｃｍ～６０ｃｍ，６０ｃｍ～８０ｃｍ，８０ｃｍ～１００ｃｍ分五层垂直取土样，然后进行室内分析，ＮＯ－３－Ｎ用苯二潢酸比色法测定结果。作物产量以各小区单收计产。探讨了Ｎ、Ｐ、Ｋ配施及有机肥与Ｎ、Ｐ、Ｋ配合施用对作物产量和土壤剖面ＮＯ－３－Ｎ的垂直分布及０ｃｍ～１００ｃｍ土体中ＮＯ－３－Ｎ累积数量的影响。结果表明，潮土区域中ＮＰＫ配施是潮土区中粮田持续高产稳产的有效措施，各处理中以ＮＰＫ处理０ｃｍ～１００ｃｍ土体中ＮＯ－３－Ｎ含量最少。
s: Effects of combined application of manure and chemical fertilizers on crop yield and accumulation of NO - 3-N in soil profile were studied according to the result of a 18-year located experiment. The results show that the application of N, P and K in combination would be an efficient way for raising crop yield and had accumulation of NO - 3-N in soil profile.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第1期35-38,共4页
Agricultural Research in the Arid Areas
基金
加拿大钾磷研究所北京办事处资助
关键词
有机肥
化肥
NO^-3-N累积
定位试验
manure
chemical fertilizer
accumulation of NO - 3-N
long term location test
