| 不同施肥处理红壤水肥耦合效应的研究 |
| |
| 引用本文： | 杜臻杰,陈效民,邓建强,张勇.不同施肥处理红壤水肥耦合效应的研究[J].灌溉排水学报,2010,29(5). |
| |
| 作者姓名： | 杜臻杰 陈效民 邓建强 张勇 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)，中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室开放课题 |
| |
| 摘 要： | 对湖南红壤地区不同施肥处理氮磷钾(NPK)、氮磷(NP)、氮(N)、空白(CK)和有机肥氮磷钾配施(NPKOM)小区中硝态氮、铵态氮、速效磷3种速效养分与土壤水分的耦合作用进行了研究,结果表明,未施有机肥的氮磷钾(NPK)、氮磷(NP)、氮(N)、空白(CK)4个处理土壤中硝态氮、铵态氮和速效磷与土壤含水率均呈极显著负相关关系(n=112;P0.01);有机肥与氮磷钾配施处理(NPKOM)土壤中硝态氮、铵态氮和速效磷3种速效养分与土壤含水率也呈极显著的负相关性(n=40;P0.01)。研究区土壤水分和速效养分存在着较好的耦合作用;而增施有机肥可以改善土壤的团粒结构和理化性质,更有利于水肥的耦合作用。
|
| 关 键 词： | 长期施肥 红壤 速效养分 水肥耦合 |
Effect of Water and Fertilizer Coupling on Red Soil under Different Fertilization Treatments |
| |
| DU Zhen-jie,CHEN Xiao-min,DENG Jian-qiang,ZHANG Yong.Effect of Water and Fertilizer Coupling on Red Soil under Different Fertilization Treatments[J].Journal of Irrigation and Drainage,2010,29(5). |
| |
| Authors: | DU Zhen-jie CHEN Xiao-min DENG Jian-qiang ZHANG Yong |
| |
| Abstract: | Nitrate-N,ammonium-N and available phosphorus coupling with soil moisture in NPK,NP,N,CK and NPKOM fertilization treatments of red soil were studied.The results indicated that NO-3-N、NH+4-N and available phosphorus had a significant relation with soil moisture in NPK,NP,N,CK plots(n=112,P<0.01).There also existed a significant relation between soil water and fertilizer in NPKOM plot(n=40;P<0.01).It can be concluded that available nutrient had a great coupling effect with soil moisture.More organic fertilizer can not only improve soil aggregates structure and basic character,but also be propitious to the effect of water and soil coupling. |
| |
| Keywords: | fertilization red soil available nutrient water and fertilizer coupling |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
