【摘要】 通过室内模拟淋溶实验,对3种多功能夹心肥料块淋溶液中N、P、K进行测定分析。结果表明:(1)多功能夹心肥料块养分N、K累积淋溶曲线均呈"S"型变化,养分P呈持续平缓上升变化;(2)多功能夹心肥料块养分N、P、K淋溶速度明显低于对照处理,其N、K释放高峰期比对照迟缓,P与对照相当;(3)3种肥料块外包被对N、P、K素的缓释作用分别为树叶>牛粪>草炭、牛粪=树叶>草炭、树叶>牛粪>草炭。更多还原

【Abstract】 Through simulation leaching experiment indoor,to analyze N,P,K in leaching solution which came from three multifunction filled fertilizer cakes.Results showed,(1)Nutrient N,K accumulated leaching curve of three multifunction filled fertilizer cakes showed "S" type,nutrient P was continuous rising gently;(2)Nutrient N,P,K leaching rate was significantly lower than the control processing,releasing peak of N,K was slower than the control,and P was probably consistent with the control;(3)Sustained-release effect of three multifunction filled fertilizer cakes’ coating to nutrient N,P,K were leaf>cow dung>peat,cow dung=leaf>peat,leaf>cow dung>peat.更多还原