Movement and transformation of potassium in fertiliser micro-sites in latosol

文献类型： 外文期刊

第一作者： He, Y. D.

作者： He, Y. D.;Wang, L. X.;Liu, Y. X.;Jing, T.;Wang, B. Z.;He, Y. D.;Wang, L. X.;Liu, Y. X.;Jing, T.;Wang, B. Z.;Cui, X. B.

作者机构：

期刊名称：2ND INTERNATIONAL CONFERENCE ON AGRICULTURAL AND BIOLOGICAL SCIENCES (ABS 2016)

ISSN： 1755-1307

年卷期： 2016 年 41 卷

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收录情况： SCI

摘要： A soil column method was used to analyse the characteristics of the movement and transformation of potassium (K) in a latosol. The internal temperature was maintained at 28 to 30 C-circle. The distances moved by the added K were 50 to 100 mm after 7 and 28 d, respectively. Potassium moved faster within 7 d during the incubation time of 28 d. The concentrations of water-extractable K, and exchangeable K, had significant negative linear relationships with distance from fertiliser placement in the region of K movement. In incubation time, water-extractable K and exchangeable K had significant effects on the concentration distributions for fertiliser micro-sites, but had no significant effects on non-exchangeable K. Most of K was still in an available form at fertiliser micro-sites after moving into the soil except that 4.22% to 11.19% of all applied K was fixed by soil.

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