摘要
以秦淮河南京市区段疏浚底泥为研究对象,将底泥按不同的比例进行土地投放,并进行盆栽试验,分析种植前后混合土样中的有机质、氮、磷、钾以及重金属含量的变化情况。盆栽试验结果表明,底泥中大量有机质分解将会增加混合土壤中有机质、氮和磷等养分的含量,施用后可以明显提高土壤有机质和氮含量,有利于培肥改土。综合速效钾与5种重金属元素对于小麦生长的影响,泥土比为1:3时底泥与农田土壤混合能达到最理想状态,按照这个比例将秦淮河底泥添加到农田中,在一定程度上能够促进小麦的生长。
With the sediment collected from Qinhuai River in Nanjing as the research objects,the sediments were put into the potted plants by different proportion.The changes of organic matter,nitrogen,phosphorus,potassium and the content of heavy metals in mixed soil before and after planting were analyzed.Pot experiment results showed that large quantities decomposition of organic matter in the sediment would increase the content of organic matter,nitrogen and phosphorus and other nutrients in the mixed soil.The organic matter and nitrogen contents in the soil could be significantly improved after the application,which was conducive to improve the soil fertility.Combined with the effects of quickacting potassium and five kinds of heavy metals on the growth of wheat,the ideal state would be reached at the sediment-farmland soil ratio of 1：3.If the sediment of Qinhuai River was added to the farmland,according to the proportion,the growth of wheat would be promoted to certain extent.
出处
《安徽农业科学》
CAS
北大核心
2010年第4期1926-1927,2068,共3页
Journal of Anhui Agricultural Sciences
基金
中国气象软科学项目(GQR2009034)
南京信息工程大学科研基金项目
关键词
秦淮河
底泥
疏浚
资源化
Qinhuai River
Sediment
Sediment-dredging
Resource reuse
