%0 Journal Article
%T Soil biological activities at maize seedling stage under application of slow/controlled release nitrogen fertilizers<br>施用缓/控释尿素对玉米苗期土壤生物学活性的影响
%A LI Dongpo
%A WU Zhijie
%A CHEN Lijun
%A LIANG Chenghua
%A ZHANG Lili
%A WANG Weicheng
%A YANG Defu
%A <br>李东坡
%A 武志杰
%A 陈利军
%A 梁成华
%A 张丽莉
%A 王伟承
%A 杨德福
%J 应用生态学报
%D 2006
%I 
%X With pot experiment and simulating field ecological environment, this paper studied the effects of different slow/controlled release N fertilizers on the soil nitrate-reductase and urease activities and microbial biomass C and N at maize seedling stage. The results showed that granular urea amended with dicyandiamide (DCD) and N-(n-bultyl) thiophosphoric triamide (NBPT) induced the highest soil nitrate-reductase activity, granular urea brought about the highest soil urease activity and microbial biomass C and N, while starch acetate (SA)-coated granular urea, SA-coated granular urea amended with DCD, methyl methacrylate (MMA)-coated granular urea amended with DCD, and no N fertilization gave a higher soil urease activity. Soil microbial C and N had a similar variation trend after applying various kinds of test slow/controlled release N fertilizers, and were the lowest after applying SA-coated granular urea amended with DCD and NBPT. Coated granular urea amended with inhibitors had a stronger effect on soil biological activities than coated granular urea, and MMA-coating had a better effect than SA-coating.
%K Maize seedling stage
%K Slow/controlled release fertilizer
%K Granular urea
%K SOil microbial activity
%K Microbial biomass<br>玉米苗期
%K 缓/控释肥料
%K 大颗粒尿素
%K 土壤微生物活性
%K 微生物量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=9D7417D042A4C7D6&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=B31275AF3241DB2D&sid=309A221A57FE8496&eid=A326383D2F3B3AB0&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=30