| 湖南省几种主要母质类型菜园土壤的磷素状况 |
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| 引用本文： | 黄运湘,王翠红,张杨珠.湖南省几种主要母质类型菜园土壤的磷素状况[J].农业现代化研究,2009,30(4):505-508. |
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| 作者姓名： | 黄运湘 王翠红 张杨珠 |
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| 作者单位： | 湖南农业大学资源环境学院,湖南,长沙,410128 |
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| 摘 要： | 通过野外土壤调查取样与室内分析,研究了湖南省3种母质类型发育的菜园土壤的磷素状况,并对土壤磷素活化系数及磷的迁移淋溶进行了简要的分析.结果表明,由河流沉积物发育的冲积菜园土全磷和有效磷含量最高,平均分别达2.04 g/kg和194.7 mg/kg,磷素活化系数(PAC)为6.7-12.9,平均9.6;第四纪红土发育的红菜园土全磷和有效磷含量其次,平均分别为1.28 g/kg和102.8 mg/kg,PAC为1.9-12.1,平均6.8;洞庭湖湖积物发育的潮菜园土全磷和有效磷含量平均分别为1.18g/kg和30.5 mg/kg,PAC为1.3-4.7,平均2.5.土壤无机磷是土壤磷素的主要形态,红菜园土中无机磷占全磷的比例为79.8%.磷素形态以O-P和Fe-P为主(占57.7%);冲积菜园土无机磷占全磷的比例为89.0%,磷素形态以Fe-P为主(占36.6%);潮菜园土无机磷占全磷的比例为85.0%,磷素形态以Ca-P为主(占88.1%).土壤有机磷组分以中活性有机磷(MLOP)和中稳性有机磷(MROP)为主,占土壤有机磷总量的80%以上.Ca2-P、AI-P、Fe-P、LOP(活性有机磷)、MLOP(中活性有机磷)是作物的有效磷源,Ca8-P、O-P、Ca10-P和MROP(中稳性有机磷)、HROP(高稳性有机磷)为作物的潜在磷源.
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| 关 键 词： | 菜园土 土壤磷素 无机磷形态 有机磷形态 湖南 |
Phosphorus Status in Vegetable Soils Derived from 3 Types of Parent Material in Hunan Province |
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| HUANG Yun-xiang,WANG Cui-hong and ZHANG Yang-zhu.Phosphorus Status in Vegetable Soils Derived from 3 Types of Parent Material in Hunan Province[J].Research of Agricultural Modernization,2009,30(4):505-508. |
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| Authors: | HUANG Yun-xiang WANG Cui-hong and ZHANG Yang-zhu |
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| Institution: | College of Resources and Environment;Hunan Agricultural University;Changsha;Hunan 410128;China |
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| Abstract: | Through soil sampling on field and laboratory analysis,phosphorus status of vegetable soils derived from 3 types of parent material was studied in Hunan Province,and the phosphorus activation coefficient (PAC) and phosphorus loss was also briefly analyzed. The results showed that total P and available P contents in vegetable soil derived from river alluvium are the highest,and amount to 2.04 g/kg and 194.7 mg/kg in average respectively,and PAC is 6.7-12.9 and 9.6 in average. The average contents of total P ... |
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| Keywords: | vegetable soil soil phosphorus form of inorganic Phosphorus form of organic Phosphorus Hunan Province |
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