木质素螯合微肥对生菜栽培中硝酸盐污染的控制作用  

Nitrate Pollution Control in Lettuce Culture UsingMicronutrients Chelated Lignosulfonate

作　　者：王德汉[1] 彭俊杰[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510542

出　　处：《上海环境科学》2003年第2期106-108,111,共4页Shanghai Environmental Sciences

基　　金：广东省自然科学基金项目(990704);教育部重点项目资助

摘　　要：通过土培、沙培盆栽试验,研究了木质素螯合微肥对生菜硝酸盐污染与土壤肥力的影响。结果表明,在相同施肥水平下,与无机微肥或EDTA微肥相比,木质素螯合微肥均能降低生菜硝酸盐含量,其中沙培比土培下降的程度更大。土培冲施木质素螯合微肥盆栽生菜后,土壤酸化程度低,土壤盐分下降,铵态氮、有效磷、有效钾及有机质均有一定程度提高,土壤肥力增强,有利于无公害蔬菜生产。Effects of micronutrients chelated lignosulfonate onsoil fertility and nitrate pollution control in lettucehas been studied by soil culture and sand culturerespectively. The results indicated that micronutrientschelated lignosulfonate could decrease nitrate contentin lettuce compared with inorganic micronutrients andEDTA micronutrients under the same fertilization level,and nitrate content reduced in sand culture was morethan soil culture. After pot experiment have finished,soil acidity and salt reduced, NH4-N、 effective P2O5、K2O and organic matter content in soil increased, soilbecame fertile and good for no public hazard vegetableproduction.

关 键 词：硝酸盐污染 控制作用 木质素螯合微肥 无公害蔬菜 土壤肥力 

分 类 号：X384[环境科学与工程—环境工程] S144[农业科学—肥料学]