| 灌漠土有效磷测定方法的筛选研究 |
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| 引用本文： | 甄清香,邵煜庭,李增凤,张仁陟.灌漠土有效磷测定方法的筛选研究[J].甘肃农业大学学报,1988(4). |
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| 作者姓名： | 甄清香 邵煜庭 李增凤 张仁陟 |
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| 作者单位： | 甘肃农大土化系，甘肃农大土化系，甘肃农大土化系，甘肃农大土化系 |
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| 摘 要： | 本文报道了春小麦的相对产量、总吸磷量与土壤有效磷测定方法之间的相关研究.测定方法包括:Olsen法、Machigen法、NH_4HCO_3—DTPA法和MehlichⅢ法。在不同肥力水平的灌漠上进行盆栽试验和田间试验,并获得了春小麦的相对产量和总吸磷量.结果表明无论盆栽试验或田间试验,春小麦的相对产量、总吸磷量与四种测定方法之间的相关性均极为显著.这四种方法都适用于灌漠土有效磷的测定。
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A Screening Study of Available Phosphorus Deter mining Methods in Irrigated-desert Soil |
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| Abstract: | Tbis paper report the correlat ionship between the relative yield of spring wheat or total amount of absorbed phosphorus and determining methods of soil available phosphorus,The methods used were Olsen method,Machigen method, NH_4HCO_3-DTP A method and Mehlich Ⅲ method. To obtain the relative yield of spring wheat and total amount of phosphorus absorbed by spring wheat, the in pot experiment and field experiment have been made in irrigated-desert soil with different fertility levels. The results indicated that the correlationship between relative yield of spring what and the four determining methods and the correlationship between total amounts of phosphorus absorbed by spring wheat and the four methods in pot experiment or fieldexperiment were extremely significant. It is concluded that all of these 4 methods are suitable for determination of available phosphorus in irrigated-desert soil. |
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