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崩崗洪積扇養(yǎng)分輸移規(guī)律研究
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“十二五”國家科技支撐計劃資助項目(2011BAD31B04)和國家自然科學基金資助項目(41201271)


Transfer Rules of Soil Nutrients in Collapsing Pluvial Fan
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    摘要:

    利用RTK GPS定位技術對崩崗洪積扇的基本理化性質及洪積扇不同位點的養(yǎng)分分布情況進行研究,。實驗位于湖北通城縣一處典型的崩崗洪積扇,,研究發(fā)現(xiàn)堿解氮、速效鉀質量比均隨距離扇口距離的增加而有規(guī)律的增大,速效磷質量比隨距離扇口距離的增加則表現(xiàn)出有增大的趨勢,,但局部規(guī)律性不明顯,。養(yǎng)分含量與主要影響因素的研究發(fā)現(xiàn)各主要養(yǎng)分含量均隨取樣高程,、有機質質量比呈近線性分布,,隨粘粒質量分數(shù)的平方變化呈近線性變化,各主要養(yǎng)分在洪流作用下水平移動均很明顯,,但在洪流之后,,堿解氮容易擴散而再分布,速效鉀的再分布現(xiàn)象卻不明顯,。

    Abstract:

    Based on the RTK GPS positioning technology, the basic physical and chemical properties and nutrient distribution of the collapsing pluvial fan were studied. Experiments with a typical collapsing pluvial fan had been made in Tongcheng County, Hubei Province. It was found that the content of alkali hydrolyzable nitrogen and available potassium were risen regularly with the increase of distance from the fan starting point and available phosphorus was increased enormously, but no prominent partial regularity increase was discovered. The study of the relationship between the nutrient contents and the main factors revealed that the main nutrient contents showed a linear distribution with the sampling elevation and the organic matter contents and a linear change with the square of clay content. The studied nutrients all shared a distinctive movement in the horizontal direction with the flood and the diffusion, and redistribution of alkali hydrolyzable nitrogen following the flood was more obvious than that of available potassium.

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張勇,丁樹文,魏玉杰,王秋霞.崩崗洪積扇養(yǎng)分輸移規(guī)律研究[J].農業(yè)機械學報,2015,46(10):216-222. Zhang Yong, Ding Shuwen, Wei Yujie, Wang Qiuxia. Transfer Rules of Soil Nutrients in Collapsing Pluvial Fan[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(10):216-222.

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  • 收稿日期:2014-10-31
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  • 在線發(fā)布日期: 2015-10-10
  • 出版日期: 2015-10-10
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