摘要
采用15N示踪法研究不同有机肥品种在土壤中的氮素矿化释放规律及对化肥氮固定的影响。结果表明,培养90 d后,鸡粪、豆粕米糠混合肥氮素矿化量分别达到了95.6和185.4 mg/kg,而牛粪和污泥堆肥分别为-28.1和-10.9 mg/kg。4种有机肥在化肥施入土壤后,对化肥氮在土壤中的保留进行了观察,鸡粪和豆粕米糠混合肥对化肥氮的固持率明显高于牛粪和污泥堆肥。
An incubation experiment was conducted to determination the effects of different organic manures on N mineralization and N retention in the soil using ^15N isotope. The results showed that the amounts of N mineralization in the soil applied poultry manure and the mixed bean dregs and rice bran were 95.6 and 185.4 mg/kg, respectively, whereas the amounts of N mineralization in the soil applied cattle manure and sewage sludge compost were - 28.1 and - 10.9 mg/kg, respectively,90 d after incubation. The results of N retention in the soil by 4 kinds of manures indicated that the N retention rates in the soil by poultry manure and the mixed bean dregs and rice bran were significantly higher than that by cattle manure and sewage sludge compost.
出处
《浙江农业学报》
CSCD
2008年第3期176-180,共5页
Acta Agriculturae Zhejiangensis
基金
科技部第十一次中日政府间国际合作项目(国科外字200645)
浙江省重点国际合作项目(2006DFA929202007C14027)
