不同土壤质地和含水率对炭基肥料氮素矿化的影响  

Effects of Soil Texture and Moisture on Nitrogen Mineralization Rate of Biochar-based Fertilizer

作　　者：李京京[1,3] 刘文 任天宝[1] 阎海涛[1] 杜飞乐[1] 张璐 李朋彦[1] 刘英杰 刘国顺[1] LI Jingjing;LIU Wen;REN Tianbao;YAN Haitao;DU Feile;ZHANG Lu;LI Pengyan;LIU Yingjie;LIU Guoshun(Tobacco College,Henan Agricultural University/Henan Biochar Engineering Research Center,Zhengzhou 450002,China;Zhengzhou Tobacco Company of Henan Province,Zhengzhou 450001,China;Huanghelou Science Park(Group)Co.,Ltd,Wuhan 430040,China)

机构地区：[1]河南农业大学烟草学院/河南省生物炭研究工程技术中心,郑州450002 [2]河南省烟草公司郑州市公司,郑州450001 [3]黄鹤楼科技园(集团)有限公司,武汉430040

出　　处：《土壤》2020年第1期40-46,共7页Soils

基　　金：国家重点研发计划课题项目(2017YFD0200808);河南省烟草公司项目(ZYKJ201416、ZYKJ201501)资助。

摘　　要：为了探究土壤特性对炭基肥料氮素矿化的影响,采用室内培养和大田小区试验,分析了炭基肥在不同土壤质地(砂质壤土、粉砂质壤土、黏土)及含水率(80%、60%、40%田间最大持水量)条件下,氮素矿化动态变化特征。结果表明:在室内培养条件下,对于不同土壤质地,炭基肥在砂质壤土条件下矿化势最高,其次为黏土,最低的为粉砂质壤土;对于不同田间持水量,在粉砂质壤土条件下,炭基肥矿化势最高的为80%田间最大持水量(80%SMC),其次为60%SMC,最低的是40%SMC;在砂质壤土和黏土条件下,炭基肥的矿化势均表现为60%SMC>80%SMC>40%SMC。培养状态下粉砂质壤土、砂质壤土、黏土条件下最大氮素有效性分别是34.12%、56.31%、41.14%,而在大田条件下,炭基肥单季氮素最大矿化率在粉砂质壤土、砂质壤土、黏土3种土壤质地下分别是50.61%、32.27%、34.29%。In order to study the effect of soil texture and water content on nitrogen mineralization of biochar-based fertilizer,an indoor incubation and field experiment were conducted to study the characteristics of nitrogen mineralization under different soil textures(sandy loam,silty loam,clay)and soil moistures(80%,60%,40%of SMC).The results showed that the mineralization potential of the sandy loam was the highest,followed by clay,and silty loam was the lowest;The mineralization potential was in an order of 80%SMC>60%SMC>40%SMC for silty loam,60%SMC>80%SMC>40%SMC for sandy loam and clay,the maximum nitrogen availability were 34.12%for silty loam,56.31%for sandy loam,41.14%for clay,respectively.The nitrogen availability of biochar-based fertilizer in single season under field conditions under three soil types the sand loam clay were 50.61%for silty loam,32.27%for sandy loam and 34.29%for clay.

关 键 词：炭基肥 氮素矿化 土壤质地 土壤含水率 

分 类 号：S572[农业科学—烟草工业]