铁炉渣在稻田土壤养分改良中的应用  

Application of Iron Slag in Soil Nutrient Amendment in Paddy Field

作　　者：郑行洋[1] 王维奇[1] 王纯[1] 林德华[1] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007

出　　处：《实验室研究与探索》2013年第3期10-12,50,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金资助项目(31000209);福建省公益类研究所专项(2011R1037-5);福建省教育厅资助项目(JB11030)

摘　　要：为了阐明铁炉渣施加对稻田土壤养分的影响,以福州平原稻田为研究区域,采用铁炉渣原位施加方法,对其施加后稻田土壤养分的变化进行了测定与分析。研究结果表明,对照、2、4、8 Mg/hm2铁炉渣施加后土壤速效氮、速效磷、交换性钙、有效硅含量分别为(8.33±1.48)、(11.50±1.64)、(14.07±2.39)、(16.06±2.91)mg/kg;(3.35±0.40)、(3.78±0.46)、(4.63±0.75)、(7.22±1.06)mg/kg;(0.032±0.008)、(0.033±0.005)、(0.045±0.012)、(0.046±0.018)cmol/kg;(329.66±47.12)、(920.63±167.44)、(1 093.41±446.99)、(1 294.58±688.85)mg/kg,土壤养分含量表现为随着铁炉渣施加量的增加而增大。除了受到铁炉渣施加后以养分形式的输入有关外,pH、土壤钙和硅含量的变化使得土壤氮磷养分的活化也起着重要作用。研究成果可为铁炉渣改良土壤技术在稻田土壤改良研究中的广泛应用提供实验和理论依据。To clarify the influence of iron slag on soil nutrient, the effect of iron slag application on soil nutrient in the paddy field of Fuzhou plain was analyzed. The results showed that the soil available nitrogen, phosphorus, exchange calcium and available silicate were 8.33 ± 1.48, 11.50 ± 1.64, 14.07 ±2.39, 16.06 ±2.91 mg/kg; 3.35 ±0.40, 3. 78 ±0.46, 4.63 ±0.75, 7.22 ± 1.06 mg/kg; 0.032 ±0.008,0.033 ±0.005, 0.045 ±0.012, 0.046 ±0.018 cmol/ kg and 329.66 ±47.12, 920.63 ± 167.44, 1 093.41 ± 446.99, 1 294.58 ± 688.85 mg/kg, respectively. The soil nutrient contents were increased with the increment of iron slag. Besides the nutrient input from iron slag, the change of pH, soil calcium and silicate also plays an important role in the activation of soil nitrogen and phosphorus nutrient. This study can provide experimental and theoretical basis for the wide application of iron slag soil amendment technique in paddy field.

关 键 词：铁炉渣 养分 土壤 稻田 

分 类 号：Q143[生物学—生态学] X171.1[生物学—普通生物学]