Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (33): 80-86.doi: 10.11924/j.issn.1000-6850.casb20191100831

Previous Articles     Next Articles

Effect of Oscillation Modes on Soil Phosphorus Fraction

Xue Yanling1,2(), Chen Xinping1,2, Zhang Wei1,2()   

  1. 1College of Resources and Environment, Southwest University, Chongqing 400715
    2Academy of Agricultural Sciences, Southwest University, Chongqing 400715
  • Received:2019-11-14 Revised:2020-03-19 Online:2020-11-25 Published:2020-11-18
  • Contact: Zhang Wei E-mail:782287378@qq.com;zw0730@swu.edu.cn

Abstract:

The study aims to evaluate the effect of different oscillation modes on soil P fractions, which contributes to understanding the determination conditions of P fractions. We used Tiessen method to reveal the influence of external conditions on the P fractions in soil treated with two oscillation modes. The results showed that the two modes of oscillation significantly affected the water-soluble P and residual P concentration. Compared to vertical placement, digestion with horizontal oscillation increased water-soluble P for 1.8 folds and decreased residual P concentration by 19 mg/kg. The two modes had no effect on total P, total organic P, total inorganic P and other P forms concentration. The distribution percentage of water-soluble P for horizontal oscillation increased by 6% compared to vertical placement. The water-soluble P and residual P concentration extracted by means of horizontal placement was higher than that by means of vertical oscillation.

Key words: oscillation modes, Tiessen P fraction method, phosphorus form, soil available phosphorus, acid purple soil, water-soluble P, residual P

CLC Number: