木质素改性产物对钾肥的缓释作用与作物吸钾量的影响  

Effect of modified lignin slow-releasing function on potassium fertilizer and potassium uptake by crops

作　　者：王德汉[1] 彭俊杰[1] 廖宗文[1] 

机构地区：[1]华南农业大学新肥料资源研究室,广东广州510642

出　　处：《植物营养与肥料学报》2003年第3期308-311,共4页Journal of Plant Nutrition and Fertilizers

基　　金：广东省自然科学基金项目 ( 990 70 4);教育部重点项目;科技部 863计划子课题 ( 2 0 0 1AA2 460 2 3 )资助

摘　　要：利用木质素改性产物作为肥料添加剂 ,与氯化钾复混制成木质素钾肥 ,通过土柱淋溶与盆栽试验 ,验证木质素对钾肥的缓释作用与作物对钾肥利用情况。结果表明 ,木质素不仅可以减少钾肥流失 ,而且可以促进番茄与玉米生长 ,提高作物对钾的吸收。木质素来源于造纸废液 ,作为钾肥的缓释材料 ,其资源环保意义重大。A kind of potassium fertilizer based lignin was made from modified lignin and potassium chloride, leaching experiment and pot experiment were conducted to test the effect of modified lignin on slow-releasing potassium fertilizer and the Bio-utilization. The results showed that lignin could not only reduce the loss of potassium fertilizer but also promote the growth of tomato and maize, and increased uptake of potassium by crops. Lignin from paper-making waste liquor was used as slow-releasing material to potassium fertilizer, which was propitious to resources utilization and environmental protection.

关 键 词：木质素 改性产物 钾肥 缓释作用 作物 吸钾量 影响因素 

分 类 号：S143[农业科学—肥料学]