木质素锌肥在粤北石灰性土壤上的生物有效性研究  

Biological availability of zinc lignosulfonate on calcareous soil of north Guangdong Province

作　　者：王德汉[1] 林辉东[1] 彭俊杰[1] 肖雄师[1] 廖宗文[1] 

机构地区：[1]华南农业大学环境科学与工程系,广州510642

出　　处：《应用生态学报》2004年第7期1236-1240,共5页Chinese Journal of Applied Ecology

基　　金：广东省科技攻关项目 ( 2 0 0 2C3 160 2 );科技部"863"计划项目( 2 0 0 1AA2 460 2 3 );广东省自然科学基金项目 ( 990 70 4);教育部重点资助项目

摘　　要：木质素锌肥是利用造纸工业副产品木质素为原料合成的一种有机微肥 ,通过淋溶与盆栽试验研究了木质素锌肥与无机锌肥在粤北两种石灰性土壤上的生物有效性差异 .结果表明 ,木质素螯合锌被土壤固定、吸附量要明显小于无机锌 ,对于土壤B ,当Zn用量为 10mg·kg-1时 ,木质素锌肥处理锌溶出量比无机锌高 6 5 2 % ;施用木质素锌肥的处理玉米长势好 ,不仅生物量高过无机锌肥 ,而且更有利于玉米对锌的吸收 ,在土壤A上 ,当Zn用量为 10mg·kg-1时 ,木质素锌肥处理的生物量比无机锌增产 16 3% ,植株锌含量比无机锌肥高 81 2 % ,木质素锌肥的生物有效性优于无机锌肥 .Zinc lignosulfonate (Zn-LS) is a kind of organic fertilizers made from the by-products of paper industry.With leach and plot treatments,this paper studied the difference of the biological availability between Zn-LS and an inorganic Zn-fertilizer on calcareous soil of north Guangdong Province.The results indicated that the Zn of Zn-LS was less absorbed by calcareous soil.In soil B,when applying 10 mg·kg -1 Zn,the dissolved amount of Zn-LS was 65.2% higher than that of inorganic Zn-fertilizer,corn grew well,and its biomass was higher.In soil A,when applying 10 mg·kg -1 Zn of Zn-LS,the biomass of corn increased by 16.3%,and its Zn content was 81.2% higher.Therefore,biological availability of Zn-LS was better than that of inorganic Zn fertilizer.

关 键 词：木质素锌肥 无机锌肥 玉米 

分 类 号：S143.7[农业科学—肥料学]