褐煤、粘土和有机肥对内蒙古风沙土腐殖质有机无机复合体的影响  

Effects of Lignite, Clay and Organic Fertilizer on Humus and Organic-inorganic Complexes in Aeolian Sandy Soil of Inner Mongolia

作　　者：柳夏艳 郝思铭 吕贻忠[1] Liu Xiayan;Hao Siming;Lv Yizhong(College of Resources and Environment,China Agricultural University,Beijing,100193;Sinochem Fertilizer Co.Ltd.,Beijing,100031)

机构地区：[1]中国农业大学资源与环境学院,北京100193 [2]中化化肥有限公司,北京100031

出　　处：《腐植酸》2018年第6期28-34,46,共8页Humic Acid

基　　金：国家自然基金面上项目(项目编号41571317);国土资源部公益性行业科研专项课题(项目编号201411009-2)

摘　　要：为了研究不同改良剂对风沙土腐殖质和有机无机复合体形成的影响,在内蒙古通辽市科左后旗的沙地进行土壤定位试验,向该地沙土中施用了褐煤、粘土和有机肥3种土壤改良剂,以研究土壤有机无机复合体的形成和结构发育。试验结果如下:(1)土壤有机质在褐煤、粘土和有机肥施用量分别为11.25 t/hm^2、150.00 t/hm^2和30.00 t/hm^2的改良剂配施(H3C2O2)下改良效果最佳,含量为10.38 g/kg;土壤胡敏酸在褐煤、粘土和有机肥施用量分别为7.50 t/hm^2、300.00 t/hm^2和30.00 t/hm^2的改良剂配施(H2C3O2)下改良效果最佳,含量为1.68 g/kg;土壤富里酸在褐煤、粘土和有机肥施用量分别为0 t/hm^2、150.00 t/hm^2和30.00 t/hm^2的改良剂配施(H0C2O2)下改良效果最佳,含量为1.66 g/kg。褐煤对土壤有机质、胡敏酸的影响效果显著。(2)添加改良剂后,土壤有机无机复合量增加了5.26%～61.84%,土壤有机无机复合量和有机无机复合度最高的处理均为H2C3O2,其褐煤、粘土和有机肥3种改良剂最佳配施量分别为7.50 t/hm^2、300.00 t/hm^2和30.00 t/hm^2。所有处理有机无机复合体各组大小为钠质研磨分散组(G2)>钠分散组(G1)>水分散组(G0)。(3)土壤有机质、胡敏酸和土壤有机无机复合量随褐煤施用量增加而呈现增加的趋势,说明向沙土中施用褐煤对土壤肥力和土壤结构有一定的改善作用。In order to study the effect of different modifiers on the formation of humus and organic- inorganic complexes in aeolian sandy soil,a soil positioning experiment was conducted in sandy land of Kezuoqi Banner,Tongliao City,Inner Mongolia.Three types of soil amendment including clay,organic fertilizer and lignite were applied to study the formation and structural development of organic-inorganic complexes in the soil.The results of the experiment were shown as follows:(1)When the lignite,clay and organic fertilizer were applied 11.25t/hm^2,150.00t/hm^2 and 30.00t/hm^2 respectively (H3C2O2),the favorite soil organic matter content was 10.38g/kg.When the lignite,clay and organic fertilizer were applied 7.50t/hm2,300.00t/hm^2 and 30.00t/hm^2 respectively (H2C3O2),the favorite soil humic acid content was 1.68g/kg.When the lignite,clay and organic fertilizer were applied 0t/hm2,150.00t/hm^2 and 30.00t/hm^2 respectively (HOC2O2),the favorite soil fulvic acid content was 1.66g/kg.The effect of lignite on soil organic matter and humic acid was remarkable.(2)With the addition of amendments,soil organic and inorganic compound content increased by 5.26%-61.84%.The highest soil organic and inorganic compound content and organic and inorganic composition was H2C3O2,while the optimum mixing amount of the lignite,clay and organic fertilizer was 7.50t/hm^2,300.00t/hm^2 and 30.00t/hm^2,respectively.Among all treatments,the organic-inorganic complexes range in sizes was G2(sodium grinding and dispersing group)>G1(sodium dispersing group)>G0(water dispersing group).(3)Soil organic matter,humic acid and soil organic-inorganic compound content increased with the increase of lignite application,indicating that the application of lignite to sandy soil could improve soil fertility and soil structure.

关 键 词：褐煤粘土 有机肥 有机无机复合体 

分 类 号：TQ314.1[化学工程—高聚物工业] S141.4[农业科学—肥料学]