| 长期定位施肥对水稻土有机质含量及组成的影响 |
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| 引用本文： | 卢志红,嵇素霞,张美良,刘经荣,张结刚.长期定位施肥对水稻土有机质含量及组成的影响[J].中国农学通报,2014,30(27):98-103. |
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| 作者姓名： | 卢志红 嵇素霞 张美良 刘经荣 张结刚 |
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| 作者单位： | 江西农业大学,,江西农业大学农学院,,江西省农业科学院科技管理处 |
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| 基金项目： | 国家科技支撑计划课题“长江中游南部（江西）双季稻持续丰产技术集成创新与示范”（2006BAD02A04） |
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| 摘 要： | 为揭示水稻土有机质的变化规律，通过长期定位施肥试验研究了27 年的不同施肥处理水稻土中有机质含量及其组成。结果表明，长期施肥不同处理的土壤有机质消长呈现明显差异，在等量氮、磷、钾养分的前提下，长期有机-无机肥配施比无肥或单施化肥更有利于稻田土壤有机质的积累；单施化肥、有机-无机肥配施各处理土壤腐殖酸、HA、FA变化趋势基本相同，但有机-无机肥配施土壤腐殖酸、HA、FA一直高于无肥及化肥处理，而且有机-无机肥配施有利于土壤中HA和FA的增加，HA/FA比值随着时间的延伸逐渐减小；有机-无机肥配施可以提高土壤易氧化有机质含量；而且长期施肥土壤有机质与易氧化有机质呈极显著正相关，与全氮、水解氮含量及产量显著正相关。易氧化有机质与土壤全氮、有效磷含量及产量呈显著正相关。其中水稻产量与易氧化有机质的相关性（r=0.8181*）比与有机质（r=0.8020）的相关性较高，说明易氧化有机质对水稻增产有较大的贡献。
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| 关 键 词： | 生长量 生长量 |
| 收稿时间： | 2014/3/24 0:00:00 |
| 修稿时间： | 2014/3/24 0:00:00 |
Effects of Long-Term Located Fertilization on the Contents and Composition of Organic Matter in Paddy Soil |
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| Institution: | Lu Zhihong, Ji Suxia, Zhang Meiliang, Liu Jingrong, Zhang Jiegang (1College of Land Resources and Environment, JAU, Nangchang 330045; SQM (Beijing) Trade Co., Ltd., Beijing 100022; 3College of Agronomy, JA U, Key laboratory of Crop Physiology, Ecology and Genetic Breeding of Jiangxi Province, Nangchang 330045) |
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| Abstract: | To reveal variation of organic matter content in red paddy soil, through a 27- years- located fertilization experiment in red paddy soil, the content and composition of organic matter in paddy soil were studied in this paper. The results showed that: the dynamics of soil organic matter of the different fertilization treatments had significant differences, In the premise of equal nutrient (Nitrogen and Phosphorus and Kalium), combined application of organic-inorganic treatments benefited the accumulation of organic matter in paddy soil than non-fertilizer treatment or chemical fertilizer treatment; the dynamics of soil humic acid, HA and FA of chemical fertilizer only and combined application of organic-inorganic treatments had basically the same trend, but the contents of humic acid, HA and FA of combined application of organic-inorganic treatments had been higher than that of non-fertilizer and chemical fertilizer treatment. Moreover, combined application of organic- inorganic treatments benefited the improvement of the contents of HA and FA, but HA/FA ratio decreased with the extension of time. Combined application of organic- inorganic treatments benefited the improvement of the contents of readily oxidizable O.M; and the contents of soil organic matter in long-term experiment and the contents of readily oxidizable O.M had highly significant positive correlation and the contents of soil total nitrogen, avail nitrogen and potassium had significant positive correlation; the contents of soil readily oxidizable O.M and the contents of soil total nitrogen, avail P and rice yield had significant positive correlation. Thereinto, the correlation (r=0.8181*) between the rice yield and soil readily oxidizable O.M was higher than the correlation (r=0.8020) between the rice yield and soil organic matter. It showed that the soil readily oxidized organic matter had greater contribution to the rice yield. |
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| Keywords: | long-term located fertilization paddy soil organic matter |
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