| 腐秆剂用量、含水量及初始碳氮比对水稻秸秆腐解性能的影响初探 |
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| 引用本文： | 朱雅琪,王珊,柳勇,陈应龙,KARIMAN Khalil,梁金明,温元明,周定志,陈展豪,张木,易秀.腐秆剂用量、含水量及初始碳氮比对水稻秸秆腐解性能的影响初探[J].生态环境学报,2019(3):601-611. |
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| 作者姓名： | 朱雅琪 王珊 柳勇 陈应龙 KARIMAN Khalil 梁金明 温元明 周定志 陈展豪 张木 易秀 |
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| 作者单位： | 长安大学环境科学与工程学院/旱区地下水文与生态效应教育部重点实验室;广东省养分资源循环利用与耕地保育重点实验室/农业部南方植物营养与肥料重点实验室;广东省生态环境技术研究所/广东省农业环境综合治理重点实验室;西澳大学农业与环境学院/澳大利亚西澳大学农业研究院;中山市农业科技推广中心;中山市沙溪镇农业服务中心 |
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| 基金项目： | 中山市广东省科学院技术转移专项(2016G1FC0014);广东省养分资源循环利用与耕地保育重点实验室/农业部南方植物营养与肥料重点实验室开放课题(ZHS2018-02);广东省科技计划项目(农村科技领域)(2015A020208009);国家自然科学基金面上项目(41471246) |
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| 摘 要： | 为了探明秸秆腐解的最佳初始条件,为腐熟秸秆还田提供科学依据,以水稻秸秆为腐解对象,设置不同的"金葵子"腐秆剂用量(因素A:A_0、A0.5、A1.0;%)、含水量(因素B:B50、B60、B70;%)及初始碳氮(C/N)比(因素C:C20、C22、C25)等初始条件,进行正交试验,研究水稻秸秆腐解过程中pH、种子发芽指数(GI)、C/N比、腐解率(DR)、水溶性有机碳(DOC)及紫外光谱参数(SUVA280、E_2/E_3和A226-400)等指标的动态变化,以确定这些初始条件对水稻秸秆腐解性能的影响。结果表明,(1)在腐解过程中,所有处理GI和DR值均随着腐解的进行逐渐升高;A_0B70C25和A0.5B70C22处理C/N比持续下降,其他处理先升高后下降;A_0B50C20和A1.0B70C20处理DOC含量先升高后下降,其他处理持续升高,紫外光谱参数的变化反映了水溶性有机物芳香性结构和腐殖化程度变化情况。(2)腐解结束时,未腐熟完全的A0B50C20处理pH、GI和DR值(分别为7.05、34.9%和30.7%)明显较低,其C/N比(25.7)则明显较高,而大多数处理pH值符合腐熟堆肥标准(8.00-9.00),GI值符合毒性较低(≥50%)或完全腐熟状态(≥80%);A_0B70C25、A0.5B70C22和A1.0B60C25处理C/N比(分别为13.1、14.4、16.4)基本符合腐解产物最佳C/N比标准(15.0);A0.5B70C22处理DR值(47.1%)最高。通过紫外光谱参数测定来预测GI值大小,为判断秸秆是否腐熟完全提供了一种替代性评价方法。直观分析法表明,水稻秸秆腐解最佳初始条件为"金葵子"腐秆剂0.5%、含水量70%、初始C/N比25;腐秆剂用量对DOC含量影响最大,含水量对C/N比、DR、SUVA280、E_2/E_3和A226-400值影响最大,初始C/N比对pH和GI值影响最大。
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| 关 键 词： | 腐秆剂用量 含水量 初始C/N比 水稻秸秆 腐解 |
Effect of Decomposition Agent Dosage,Moisture Content,and Initial C/N Ratio on Decomposition of Rice Straw |
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| ZHU Yaqi,WANG Shan,LIU Yong,CHEN Yinglong,KARIMAN Khalil,LIANG Jinming,WEN Yuanming,ZHOU Dingzhi,CHEN Zhanhao,ZHANG Mu,YI Xiu.Effect of Decomposition Agent Dosage,Moisture Content,and Initial C/N Ratio on Decomposition of Rice Straw[J].Ecology and Environment,2019(3):601-611. |
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| Authors: | ZHU Yaqi WANG Shan LIU Yong CHEN Yinglong KARIMAN Khalil LIANG Jinming WEN Yuanming ZHOU Dingzhi CHEN Zhanhao ZHANG Mu YI Xiu |
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| Institution: | (Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education/School of Environmental Science and Engineering,Chang'an University, Xi'an 710054, China;Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture/Guangdong Key Laboratory of Nutrient Cycling and FarmlandConservation, Guangzhou 510640, China;Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management/Guangdong Institute of Eco-Environmental Science &Technology, Guangzhou 510650, China;The UWA Institute of Agriculture/UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia;Zhongshan Agricultural Science and Technology Extension Center, Zhongshan 528400, China;Shaxi Agricultural Service Center of Zhongshan City, Zhongshan 528471, China) |
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| Abstract: | ZHU Yaqi;WANG Shan;LIU Yong;CHEN Yinglong;KARIMAN Khalil;LIANG Jinming;WEN Yuanming;ZHOU Dingzhi;CHEN Zhanhao;ZHANG Mu;YI Xiu(Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education/School of Environmental Science and Engineering,Chang'an University, Xi'an 710054, China;Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture/Guangdong Key Laboratory of Nutrient Cycling and FarmlandConservation, Guangzhou 510640, China;Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management/Guangdong Institute of Eco-Environmental Science &Technology, Guangzhou 510650, China;The UWA Institute of Agriculture/UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia;Zhongshan Agricultural Science and Technology Extension Center, Zhongshan 528400, China;Shaxi Agricultural Service Center of Zhongshan City, Zhongshan 528471, China) |
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| Keywords: | decomposition agent dosage moisture content initial C/N ratio rice straw decomposition |
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