湖南植烟土壤磷的主要形态及其有效性 |
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引用本文: | 王娟,罗建新,欧阳志标. 湖南植烟土壤磷的主要形态及其有效性[J]. 中国农学通报, 2016, 32(9): 170-173. DOI: 10.11924/j.issn.1000-6850.casb15090118 |
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作者姓名: | 王娟 罗建新 欧阳志标 |
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作者单位: | 湖南农业大学资源与环境学院 植物营养湖南省普通高等学校重点实验室,湖南农业大学资源与环境学院 植物营养湖南省普通高等学校重点实验室,湖南农业大学资源与环境学院 植物营养湖南省普通高等学校重点实验室 |
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基金项目: | 湖南中烟工业有限责任公司项目“基地植烟土壤综合改良技术推广与应用”(2011130085)。 |
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摘 要: | 为研究湖南主要成土母质植烟土壤磷素的形态及含量特征,阐明土壤磷形态、转化及与有效性的关系,本研究通过对湖南主产烟区4种主要成土母质的16个代表性土壤进行分析,结果表明:不同母质植烟土壤磷的主要形态是无机磷,占土壤全磷的63.82%~77.77%,有机磷仅占22.23%~36.18%。板页岩和紫色板页岩发育的土壤全磷含量较高,为834.63~991.86 mg/kg,但速效磷含量较低,为29.53~30.02 mg/kg;第四纪红土和石灰岩发育的土壤全磷和无机磷的含量较低,而速效磷含量及其占全磷的比例则较高。不同母质植烟土壤有机磷、无机磷和速效磷含量存在有:第四纪红土>石灰岩>紫色板页岩和板页岩的变化趋势。不同母质植烟土壤速效磷与土壤全磷、有机磷和无机磷之间均无直接的相关性。
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关 键 词: | 氨基酸 氨基酸 根系活力 土壤酶 微生物生物量 |
收稿时间: | 2015-09-26 |
修稿时间: | 2015-11-10 |
Phosphorus Forms and Availability of Hunan Tobacco-planting Soil |
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Abstract: | In order to study phosphorus forms and availability of Hunan tobacco-planting soil and illustrate the relationship among soil phosphorus forms, transportation and effectiveness, 16 representative soil samples of 4 main parent materials from Hunan tobacco-growing area were analyzed. The results showed that inorganic P was the main form of different parent materials planting tobacco soil phosphorus, which accounted for 63.82%-77.77% of total P, organic P only accounted for 22.23%-36.18%. The content of total P was relatively high in plate shale and purple slate of 834.63-991.86 mg/kg, but the available P content was low of 29.53-30.02 mg/kg; the contents of total P and inorganic P were low, but the content of available P and its proportion in total P in quaternary red clay and limestone were high. The order of the content of inorganic P, organic P and available P in different parent materials was: quaternary red clay>limestone>plate shale and purple slate. Soil available P had no direct correlation with total P, organic P and inorganic P in different parent material tobacco-planting soils. |
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Keywords: | Hunan tobacco-planting soil parent material P form P availability |
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