| .不同施肥处理土壤水溶性有机碳含量特征及动态变化[J].农业环境科学学报,2013,32(2):. |
| 不同施肥处理土壤水溶性有机碳含量特征及动态变化 |
| Concentration Characteristics and Dynamic Changes of Water Soluble Organic Carbon in Soil Under Different Fertilization Treatments |
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| DOI：10.11654/jaes.2013.02.015 |
| 中文关键词: 施肥 畜禽粪便 水溶性有机碳 生育期 动态变化 |
| 英文关键词: fertilization livestock and poultry manure water soluble organic carbon growth stage dynamic change |
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| 摘要点击次数: 2670 |
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| 中文摘要: |
| 采用田间小区试验，研究了不施肥（CK）、化肥（NPK）、鸡粪（M）和分别基于鸡粪、猪粪制造的有机无机复混肥（NPKM1、NPKM2）5种施肥处理土壤水溶性有机碳（WSOC）的含量及其随小麦生育期的动态变化特征。结果表明，表层（0~20 cm）不同施肥处理的冷、热两种水溶性有机碳随生育期推移呈先增后减，随后再增加的动态变化；它们的含量在NPKM1、NPKM2处理下均显著高于CK和NPK处理（P<0.05），而低于M处理。各处理心土层（20~40 cm）水溶性有机碳的动态变化趋势则表现出先增加后减少的变化趋势，而处理间水溶性有机碳含量高低顺序与表层相似。此外，表层两种水溶性有机碳与土壤养分、小麦产量的相关性比总有机碳高，因而能更灵敏地反映土壤养分供应状况和生产能力。 |
| 英文摘要: |
| A field plot experiment was conducted to study the water soil organic carbon（WSOC） dynamics with the growth of wheat under different fertilization treatments including no fertilizer（CK）, chemical fertilizer only（NPK）, chicken manure（M）, organic-inorganic compound fertilizer based on chicken manure（NPKM1） and pig manure（NPKM2）. The results indicated that the cold water soil organic carbon（CWSOC） and hot water soil organic carbon（HWSOC） concentrations of all treatments increased firstly and decreased subsequently and finally increased with the changes of the growth stage at topsoil（0~20 cm）. Their concentrations under NPKM1 and NPKM2 treatments were significantly higher than CK and NPK treatments（P<0.05）, but lower than the M treatment. The CWSOC and HWSOC concentrations in 20~40 cm soil layer presented a single-peak curve with the changes of the growth stage which the peak appeared at heading stage, and the order from high to low was similar to the topsoil. In addition, the correlation of the two kinds of WSOC with wheat yield and soil nutrients was higher than soil total organic carbon at topsoil. |
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