干旱区生态环境知识资源中心(Arid): 氮改性褐煤的特性及其在退化土壤造林中的应用研究

Arid

	氮改性褐煤的特性及其在退化土壤造林中的应用研究
其他题名	Studies on Properties of N-modified Brown Coal and Its Application in Afforestation in Semi-arid Degraded Soil
	钟哲科; 杨慧敏; 白瑞华
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2010
卷号	24 期号:4 页码:213-216,221
中文摘要	通过研究褐煤在氧化氨解反应后特性的变化及其在退化土壤造林中的应用效果,旨在探索褐煤高效利用的有效途径.结果表明:氧化氨解工艺能有效地提高褐煤的阳离子交换量、腐殖酸总量和富里酸含量,降低胡敏素含量.反应生成的氮改性褐煤,全氮含量为5.8%,且呈不同形态(铵态、酰胺态和紧密有机态氮态)的分布,能在土壤中保存较长的时间.半干旱退化土壤中的应用试验表明,在土壤中掺人氮改性褐煤(每株137 9或274 9)可使樟子松林分造林成活率提高20%~25%,而施用相应含氮量的尿素对林木成活率几乎没有作用.随着立地条件的改善和植被的恢复,施用氮改性褐煤林分的土壤碳汇、土壤微生物总量以及脱氢酶、脲酶、beta-葡糖苷酶、碱性磷酸酶等的活性都有明显的提高,证实了氮改性褐煤可以作为一类生态和环保的土壤改良剂
英文摘要	In order to find a way in utilizing brown coal with high efficiency, the changes of chemical and biological properties of brown coal after oxidative ammonolysis process(N-modified process)and the application of N-modified brown coalin afforestation in degraded soil were conducted. Results showed that the oxidative ammonolysis process could significantly enhance the cation exchange capacity, increase total humuic acid and fulvic acid contents, and reduce the humin content of brown coal. The total N of N-modified brown coal was 5.8%, existing in different forms (ammonium, amide and closely-combined organic), which can be preserved in soil for a relatively long period. Field application experiment in semiarid area showed that the survival rate of Pinus sylvestris with the addition of N-modified brown coal in soils(137 g or 274 g per tree)were 20%~ 25% more than that in control,by contrast, the urea showed almost no influence on the survival rate. With the improvement of site condition and recovery of the vegetation, the soils with the addition of N-modified brown coal showed significantly increase in soil C sequestration, microbial biomass, dehydrogenase activity, urease activity,beta-glucosidase activity and alkaline phosphatase, indicating the N-modified brown coal can be a kind of ecological and environmental soil amendment
中文关键词	氮改性褐煤 ; 化学特性 ; 微生物活性 ; 土壤改良剂
英文关键词	N-modified brown coal chemical properties microbial activity soil amendment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3980395
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225659
作者单位	国家林业局竹子研究开发中心, 国家林业局竹子研究开发中心, 杭州, 浙江 310012, 中国
推荐引用方式 GB/T 7714	钟哲科,杨慧敏,白瑞华. 氮改性褐煤的特性及其在退化土壤造林中的应用研究[J],2010,24(4):213-216,221.
APA	钟哲科,杨慧敏,&白瑞华.(2010).氮改性褐煤的特性及其在退化土壤造林中的应用研究.水土保持学报,24(4),213-216,221.
MLA	钟哲科,et al."氮改性褐煤的特性及其在退化土壤造林中的应用研究".水土保持学报 24.4(2010):213-216,221.