首页 | 本学科首页   官方微博 | 高级检索  
     

长期菌渣化肥配施对稻田土壤活性有机碳组分和有效养分的影响
引用本文:龚臣,王旭东,倪幸,乐天天,曾诗媛,叶正钱. 长期菌渣化肥配施对稻田土壤活性有机碳组分和有效养分的影响[J]. 浙江农林大学学报, 2018, 35(2): 252-260. DOI: 10.11833/j.issn.2095-0756.2018.02.008
作者姓名:龚臣  王旭东  倪幸  乐天天  曾诗媛  叶正钱
作者单位:浙江农林大学 环境与资源学院 浙江省土壤污染生物修复重点实验室, 浙江 杭州 311300
基金项目:浙江省自然科学基金资助项目LY16D010010国家自然科学基金资助项目31601271
摘    要:设置3个菌渣(F)施用量(0,50%,100%)和3个化肥(C)施用量(0,50%,100%)共9个处理,采用长期定位试验方法(2010-2016年),研究长期菌渣化肥配施对稻田土壤活性有机碳组分和土壤基本肥力要素变化的影响以及两者的相关性。结果表明:相比单施化肥,菌渣化肥配施显著提高土壤碳库管理指数(CPMI),3种土壤活性有机碳(LOC1,LOC2,LOC3,指分别以33,167,333 mmol·L-1高锰酸钾氧化有机碳)及其有效度,增幅分别为45.09%,41.77%~53.55%和11.69%~33.55%(P < 0.05),其中C100F100的提高效果最好,CPMI值为204.95,3种土壤活性有机碳质量分数分别为1.73,3.41和4.37 g·kg-1,相应的有效度分别为14.53%,28.56%和43.03%;相比单施化肥,菌渣化肥配施处理还显著提高了土壤全氮、碱解氮和有效磷,增幅分别达21.11%,19.39%和31.83%。3种土壤活性有机碳都比土壤有机碳与土壤全氮、碱解氮、有效磷、速效钾的相关性强,LOC1和LOC2比LOC3在反映土壤肥力变化上更敏感(P < 0.01)。LOC1的变化最为敏感,可以用于反映土壤肥力的微小变化;土壤活性有机碳组分主要决定于菌渣的施用,而化肥则是主要养分提供者,菌渣与化肥交互作用的结果影响土壤肥力的变化状况,适宜的菌渣-化配合施用量有利于土壤培肥和保障水稻Oryza sativa产量,以C50F50处理为最佳。

关 键 词:土壤肥料学   菌渣还田   活性有机碳组分   土壤有效养分   水稻产量
收稿时间:2017-03-06

Effects of long-term application of edible fungus residue and chemical fertilizers on fractions of labile organic carbon and available nutrients in rice field soils
GONG Chen,WANG Xudong,NI Xing,LE Tiantian,ZENG Shiyuan,YE Zhengqian. Effects of long-term application of edible fungus residue and chemical fertilizers on fractions of labile organic carbon and available nutrients in rice field soils[J]. Journal of Zhejiang A&F University, 2018, 35(2): 252-260. DOI: 10.11833/j.issn.2095-0756.2018.02.008
Authors:GONG Chen  WANG Xudong  NI Xing  LE Tiantian  ZENG Shiyuan  YE Zhengqian
Affiliation:Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental and Resource Sciences, Zhejiang A & F University, Hangzhou 311300, Zhejiang, China
Abstract:To understand how long-term application of edible fungus residue (F) and chemical fertilizers (C) affected soil fertility, nine treatments were established with combinations of three rates of F (0, 50%, and 100%) and three rates of C (0, 50%, and 100%). Each treatment received 3 replicates. The treatment plots were arranged as randominzed blocks design, with plot size of 4 m×5 m. Fractions of soil labile organic carbon (LOC1, LOC2, LOC3) and changes of basic soil fertility parameters were examined through a rice field experiment (2010-2016). Results showed that compared to a single C application, a combined application of F and C had significant (P < 0.05) effect on increasing of the soil carbon pool management index (CPMI), and content of three types of soil LOCs along with their availability (ALCs), rates increase for CPMI by 45.09%, LOCs by 41.77%-53.55%, and ALCs by 11.69%-33.55%. Of the nine treatments, C100F100 was the most effective with a CPMI of 204.95; content of LOC1(oxidized by 33 mmol·L-1 KMnO4) of 1.73, LOC2(by 167 mmol·L-1 KMnO4) of 3.41, and LOC3(by 333 mmol·L-1 KMnO4) of 4.37 g·kg-1; and content of ALC1 of 14.53%, ALC2 of 28.56%, and ALC3 of 43.03%. All three LOCs had significant positive correlations with soil total nitrogen (r1=0.758**, r2=0.711** and r3=0.722** for LOC1, LOC2 and LOC3 respectively), available nitrogen (r1=0.940**, r2=0.930** and r3=0.726** for LOC1, LOC2 and LOC3 respectively), available phosphorus (r1=0.781, r2=0.802 and r3=0.784 for LOC1, LOC2 and LOC3 respectively), available potassium (r1=0.674, r2=0.707 and r3=0.440 for LOC1, LOC2 and LOC3 respectively), and soil organic carbon (r1=0.827, r2=0.774 and r3=0.637 for LOC1, LOC2 and LOC3 respectively). Therefore, LOC1 had most close correlations with SOC and soil fertility changes. Soil LOC was mainly determined by F application; whereas, C was the main nutrient supplier. Consequently, a proper combined application of F and C was favorable to improve soil fertility and rice yield with C50F50 the best treatment in this study.
Keywords:
本文献已被 CNKI 等数据库收录!
点击此处可从《浙江农林大学学报》浏览原始摘要信息
点击此处可从《浙江农林大学学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号