不同施肥处理对草甸黑土化学性质的影响  

Effects of Different Fertilization Treatments on Chemical Properties of Meadow Black Soil

作　　者：陈琳 林涵[1] 王继红[1] 程恩宝 尹衍利 李江月 CHEN Lin;LIN Han;WANG Jihong;CHENG Enbao;YIN Yanli;LI Jiangyue(College of Resourcesand Environment,Jilin Agricultural University,Changchun 130118,China;Forestry Bureau of Jingyu County in Jilin Province,Jingyu 135200,China;Natural forest Protection Center of Hanzhong City in Shanxi Province,Hanzhong 723000,China)

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]吉林省靖宇县林业局,靖宇135200 [3]陕西省汉中市天然林保护中心,汉中723000

出　　处：《吉林农业大学学报》2018年第5期596-602,共7页Journal of Jilin Agricultural University

基　　金：国家自然科学基金项目(41877027);吉林省科技厅重大科技专项(20126031)

摘　　要：以草甸黑土为对象,研究了不同施肥处理对土壤化学性质的影响。结果表明:长期单施氮肥土壤p H降幅最大,交换性酸及交换性氢铝含量最高,其次为配施氮肥土壤,并且单施或配施氮肥的土壤中有机质含量在不同施肥处理中最低,添加玉米秸秆后土壤p H降幅减缓,交换性酸含量稍有降低,并且土壤有机质含量及阳离子交换量均稍有增加;在不添加玉米秸秆组,单施氮肥土壤的酸碱缓冲容量值最小,为2. 13,不施肥对照组酸碱缓冲容量值最大,为4. 58,添加玉米秸秆后单施氮肥组土壤缓冲容量值为3. 06,不施肥对照组酸碱缓冲容量值增加至5. 84,说明在土壤中添加玉米秸秆提高了土壤酸碱缓冲性能。这说明,不同施肥处理方式对土壤p H、有机质含量、阳离子交换量(CEC)以及酸碱缓冲性能等化学性质均产生影响。The effects of different fertilization treatments on meadow black soil were studied. The results show that pH value of long-term single nitrogen fertilizer soil had the largest decline,content of exchangeable acid and exchangeable hydrogen and aluminum was the highest,the second was nitrogen-phosphorus fertilizer soil,and content of organic matter was the lowest in both soils. Soil pH decreased slowly after adding corn stalk,exchangeable acid content in the soil was slightly decreased,soil organic matter content increased,and cation exchange capacity increased. In no straw adding group,acid-base buffer capacity value of soil with single nitrogen fertilizer application was the lowest（ 2. 13）,acid and alkali buffer capacity value of the no straw adding group（ control group） was the highest（ 4. 58）. After adding corn stalk,soil buffer capacity of single nitrogen application group was3. 06,acid and alkali buffering capacity value in the control group increased to 5. 84,indicating that adding an appropriate amount of corn stalk could enhance soil acid-base buffer performance. In con-clusion,the effects of different long-term fertilization treatments on soil p H,organic matter,cation exchange capacity,and acid base buffer capacity are different.

关 键 词：草甸黑土 阳离子交换量 交换性酸 施肥方式 

分 类 号：S147.2[农业科学—肥料学] S151.9[农业科学—农业基础科学]