| 江苏省主要土壤的磷肥指数及适宜磷肥用量 |
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| 引用本文： | 李刚华,丁艳锋,杨文祥,吴昊.江苏省主要土壤的磷肥指数及适宜磷肥用量[J].土壤通报,2005,36(6):896-898. |
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| 作者姓名： | 李刚华 丁艳锋 杨文祥 吴昊 |
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| 作者单位： | 南京农业大学,农业部作物生长调控重点开放实验室,江苏省信息农业高技术研究重点实验室,江苏,南京,210095 |
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| 基金项目： | 江苏省主要农作物优质高产精确施肥技术资助项目 |
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| 摘 要： | 以江苏省五种典型类型土壤为供试土壤,系统研究了不同类型土壤稻季的磷肥指数和磷临界值。研究结果表明,不同土壤类型的磷肥指数和磷临界值存在着较大的差异,其中磷肥指数表现为灰沙土>黄泥土>粉砂土>淤土>砂黄泥土,而磷临界值表现为淤土>黄泥土>砂黄泥土>灰沙土>粉砂土。并结合当地的特点,推荐了当地的适宜磷肥施用量。
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| 关 键 词： | 土壤 磷肥指数 磷临界值 适宜施磷量 |
| 文章编号： | 0564-3945(2005)06-0896-03 |
| 修稿时间： | 2004年7月18日 |
P Fertilizer Index and Optimal P Fertilizer Application Rate for Different soil Types in Jiangsu Province |
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| LI Gang-hua,DING Yan-feng,YANG Wen-xiang,WU Hao.P Fertilizer Index and Optimal P Fertilizer Application Rate for Different soil Types in Jiangsu Province[J].Chinese Journal of Soil Science,2005,36(6):896-898. |
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| Authors: | LI Gang-hua DING Yan-feng YANG Wen-xiang WU Hao |
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| Abstract: | P fertilizer index(PFI) and P critical value of five typical soil types at rice growth season of Jiangsu Province was investigated in this paper. Results showed that great differences existed in PFI and P critical value of different soil types,the order of PFI was ash sandy soil>yellow mud soil>powder sandy soil>silt soil>sandy yellow mud soil,while the order of P critical value was silt soil>yellow mud soil>sandy yellow mud soil>ash sandy soil>powder sandy soil.According to the local soil characteristics,the optimal P fertilizer application rate was also calculated. |
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| Keywords: | Soil P fertilizer index(PFI) P critical value Optimal P application rate |
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