摘要
采用好气培养—间歇淋洗的实验方法,研究了不同有机肥料氮素在好气条件下的释放规律。指出有机肥料氮素矿化累积量与有效积温的关系可用y=a+bx或y=x/(a+bx)来描述,土壤、玉米秸秆、猪圈肥、垃圾堆、人粪尿堆肥、猪粪、紫穗槐、满足公式y=a+bx,猪粪、紫穗槐、人粪尿堆肥氮素的释放速率较大,垃圾堆肥、猪圈肥、氮素的释放很少,同土壤差异不大。而玉米秸秆反而固定土壤释放的无机氮。大黄河有机肥与棉籽饼肥满足公式y=x/(a+b),肥料肥效前期较大。
The aerolic incubation method was used to study the release law of nitrogen arganic manure under aerobic condition. The result obtained showed that the relationship between the accumulated amount of mineralized nitrogen in organic manure and the effeetive accumulated temperature could be discribed by y= a+bx or y=x/(a+bx). The formula y=a+bx suitble for soil, straw of maize, pigpen compost, rubbish compost, human wasts compost, pig manure and false indigo, The rate of nitrogen minerlization is bigger in pig manure, false indigo and human wasts compost, but the reverse was true for rubbish compost and pigpen compost, and mine difference compared with soil, The mineralization nitrogenfrom soil were fixed by straw of maize. The formula y=x/(a+bx) suitble for 'Da Huang He' manure and cake manure. The fertilizer efficieney at the beginning is bigger.
出处
《莱阳农学院学报》
1992年第4期260-263,共4页
Journal of Laiyang Agricultural College
关键词
有机肥料
氮素
释放规律
aerobic incubation
organic manure
nitrogen
erlease law
