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小尺度下农田潮土Olsen-P的空间分布及其与重金属的关系
引用本文:赖琳玲,程智慧,陈学进,滕 林,冯武焕.小尺度下农田潮土Olsen-P的空间分布及其与重金属的关系[J].西北农业学报,2010,19(2):127-132.
作者姓名:赖琳玲  程智慧  陈学进  滕 林  冯武焕
作者单位:1. 河南工业大学,化学化工学院,郑州450001
2. 河南省新密市职教中心,河南新密,452370
摘    要:玉米收获后以10 cm×10 cm网格采取1.0 m×1.0 m范围内0~20 cm土样,测定Olsen-P含量、DTPA提取态和全量Cu、Mn、Pb和Zn,并研究磷与重金属的相关性。结果表明,土壤Olsen-P的变化范围为3.3~38.5 mg/kg,平均值为9.6 mg/kg,变异系数为49.87%;Olsen-P在采样区的南北边缘含量较高,空间变异是结构性因素和随机因素共同作用的结果;Olsen-P与DTPA态Cu和Pb之间存在极显著负相关(P0.01),与DTPA态Mn和Zn的相关性不显著(P0.05),全量Mn、Pb和Zn与Olsen-P之间呈极显著正相关(P0.01)。以上结果说明,玉米生长期间追施水溶性磷肥导致土壤Olsen-P的空间变异发生变化,磷肥施用导致部分Cu和Pb有效性下降、全Mn、全Pb和全Zn含量上升。

关 键 词:空间分布  重金属  潮土  小尺度  玉米  华北平原

Spatial Distribution of Olsen P in Farming Chaotu Soil at Small Scale and Its Relationship with Soil Heavy Metals
LAI Linling,CHENG Zhihui,CHEN Xuejin,TENG Lin,FENG Wuhuan.Spatial Distribution of Olsen P in Farming Chaotu Soil at Small Scale and Its Relationship with Soil Heavy Metals[J].Acta Agriculturae Boreali-occidentalis Sinica,2010,19(2):127-132.
Authors:LAI Linling  CHENG Zhihui  CHEN Xuejin  TENG Lin  FENG Wuhuan
Abstract:Spatial distribution of residual Olsen-P in farming Chaotu soil (Ustic Cambosols) after hole application of water soluble P fertilizer during corn growth, and its relationship with copper (Cu), manganese (Mn), lead (Pb) and Zn in North China Plain was investigated. After the harvest of corn, a 1.0 m×1.0 m area in the corn field was sampled with 10 cm× 10 cm grid to the depth of 20 cm, Olsen-P, DTPA- and total Cu, Zn, Pb and Mn of these 100 samples were analyzed. The results indicated that Olsen-P ranged between 3.3~38.5 mg/kg, averaged 9.6 mg/kg, the coefficient of variance (CV) was 49.87%;higher contents of Olsen-P were found at the northern and southern edge of the sampling area;spatial distribution of Olsen-P was affected by random factors and structural factors as well;significant correlations were found between DTPA-Cu, Pb and Olsen-P (P<0.01), while the correlations between Olsen-P and DTPA-Mn, Zn were not statistically significant (P>0.05);significant correlations were found between total Mn, Pb, Zn and Olsen-P (P<0.01). These results suggest that the hole application of water soluble P fertilizer during corn growth results in larger spatial variability of Olsen-P, higher content of total Mn, Pb and Zn, while DTPA-Cu and Pb content are negatively affected.
Keywords:Olsen-P  Olsen-P  Spatial distribution  Heavy metal  Chaotu soil  Small scale  Corn  North China Plain
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