水土保持学报2011，Vol.25Issue(3)：151-153,159,4.
黄土旱塬施肥对土壤颗粒组成及其有效磷富集的影响研究
Effects of Fertilization on Soil Particle Composition and Phosphorus Enrichment in Dry Highland of Loess Plateau
摘要
Abstract
The study on soil particle composition and enrichment of available phosphorus was conducted with a long-term fertilization field experiment and laboratory analysis methods. The results showed the smaller soil particle was, the higher the proportion of soil particles was in four fertilization treatments, but the different fertilizer treatments would influence the proportion of the same particle size. The combined application of nitrogen fertilizer, organic fertilizer on the basis of a single P application (NP、PM、NPM), would help to increase the ＜0.25 mm proportion of particles, the NPM was the most obvious. The long-term application of organic fertilizer could improve available phosphorus in soil particles, in same time the proportion of the water-soluble phosphorus in available phosphorus of the soil particles may be increased. Available phosphorus in the soil (including Olsen-P, water-soluble phosphorus) mainly enriched in the ＜2 mm soil particles,the highest enrichment rate of available phosphorus was in ＜0.25 mm soil particles. The combined application of nitrogen and phosphorus fertilizer(NP) or nitrogen, phosphorus and organic fertilizer(NPM) could significantly improve enrichment rate of available phosphorus in ＜0. 25 mm soil particles, but the application of phosphorus and organic fertilizer(PM) could increase enrichment rate of available phosphorus in 0.25～2 mm soil particles.关键词
土壤颗粒组成/有效磷/水溶性磷Key words
soil particle composition/ available phosphorus/ water-soluble phosphorus分类
农业科技引用本文复制引用
陈璐,党廷辉,杨绍琼,戚瑞生..黄土旱塬施肥对土壤颗粒组成及其有效磷富集的影响研究[J].水土保持学报,2011,25(3):151-153,159,4.基金项目
国家重点基础研究发展计划(2005CB121102) （2005CB121102）
