摘要
采用大田试验,研究了3种肥料增效剂与化肥减量配施对水稻产量、稻田土壤和水体中铵态氮及硝态氮动态变化的影响。试验结果表明,通过配施肥料增效剂,在保证水稻产量前提下,可以减少10%~15%的肥料用量;水稻生长前期,3种肥料增效剂均能一定程度地降低土壤中硝态氮含量,但在水稻生长后期对土壤、水体中铵态氮和硝态氮的短期效益不明显。
The field experiment was conducted to study the effects of combined application of three fertilizer synergists with reduction fertilizers on rice yield and ammonium nitrogen and nitric nitrogen in paddy soil and surface water. The results indicated that application of fertilizer synergists could save fertilizer rate by 10% to 15% with the precondition of ensuring the rice yield; the three fertilizer synergists can decrease the content of nitrate nitrogen in paddy soil for a certain level in the early growth period of rice, but there was no significant short-term effect on ammonium nitrogen and nitrate nitrogen in paddy soil and surface water in the later growth period of rice.
出处
《湖南农业科学》
2012年第4期47-50,54,共5页
Hunan Agricultural Sciences
基金
国家"十二五"科技支撑计划项目(2012BAD14B17
2012BAD05B05-03)
关键词
肥料增效剂
水稻产量
土壤
地表水
铵态氮
硝态氮
fertilizer synergist
rice yield
soil
surface water
ammonium nitrogen
nitrate nitrogen
