机构地区: 浙江大学环境与资源学院
出 处: 《湖南农业大学学报(自然科学版)》 2003年第5期388-390,共3页
摘 要: 为进一步完善蔬菜硝酸盐污染的调控技术体系 ,采用好气培养法研究了新型硝化抑制剂 3,4 -二甲基吡唑磷酸盐 ( DMPP)对菜园土壤 NH4 +- N,NO3- - N含量的影响 .结果表明 ,在培养过程中 ,土壤 NH4 +- N含量呈现出先减少后略有升高的变化趋势 ,而 NO3- - N含量呈现出先升高后减少的变化趋势 .DMPP处理的土壤中 NH4 +- N含量高于硫硝铵 ( ASN )处理 ,NO3- - This paper probes into the NH 4 + N, NO 3 - N concentration dynamics on DMPP (3,4 dimethylpyrazole phosphate) in vegetable soils under fertilized condition with aerobic cultivation. The results show that there is a tendency that NH 4 + N decreases in the prophase, and then increases a little in the anaphase. There is a tendency that NO 3 - N increases in the prophase and then in the anaphase. NH 4 + N concentration is higher in DMPP treatment than in ASN treatment, whereas NO 3 - N concentration reverses.