当前位置: 首页 > 文章 > 长期定位施肥对黑垆土剖面养分分布特征的影响 植物营养与肥料学报 2001,7 (3) 249-254
Position: Home > Articles > Effect of long-term fertilization on nutrient distribution in profiles of black loessial soil Journal of Plant Nutrition and Fertilizers 2001,7 (3) 249-254

长期定位施肥对黑垆土剖面养分分布特征的影响

作  者:
樊军;郝明德;党廷辉
单  位:
中国科学院水利部水土保持研究所;西北农林科技大学水土保持研究所
关键词:
黑垆土;剖面养分含量分布;长期施肥
摘  要:
对黄土高原旱地 1 5年连续施肥后土壤剖面养分分布的研究发现 ,施化肥对土壤剖面有机质、全N、全P含量的影响深达 1 0 0cm以下 ,所有施肥处理有机质、全N、全P、NO3- N、有效P含量在耕层 (0~ 2 0cm)都有不同程度增加 ;40~ 60、60~ 80cm土层有机质、全N、全P都低于长年不施肥处理 ,造成土壤下层养分的亏缺。长期大量施用氮肥造成N素养分下淋累积 ;长期大量施用磷肥土壤耕层有效P显著提高 ,而 2 0cm以下土层变化不大。
译  名:
Effect of long-term fertilization on nutrient distribution in profiles of black loessial soil
作  者:
FAN Jun, HAO Ming de, DANG Ting hui (Inst of Soil and Water conservation, CAS,Northwestern Sci tech Unev YangLing, Shaanxi 712100, China)
关键词:
balck loessial soil; nutrient distribution in profile; long term fertilization
摘  要:
Nutrient distributions of the profiles of black loessial soil were studied after N and/or P were applied for 15 years continuously The results showed that organic matter, total N, total P, NO - 3 N, Olsen P of fertilization treatments were increased in the 0~20cm soil layer and nutrient contents of 0~20cm and 20~40cm layers were higher than that of CK, which leads to lack of nutrient content Higher N rate applied to result the accumulation of NO - 3 N leaching Higher P applied to increase the Olsen P content in the 0~20 soil layer remarkably, but not to effect on Olsen P under the 20cm depth

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