Effects of Different Organic Materials on Contents and Morphologic Changes of Mn in Black Soil

Abstract:

Three kinds of organic materials were used for culture experiment, namely livestock manures, natural organic materials and half decomposed organic materials. And the modified BCR sequential extraction procedure was used to analyze the morphologic changes of Mn. The study was focus on the effects of different kinds of organic materials on contents and morphologic changes of Mn in black soil. And the results show that different kinds of organic materials all increase the total Mn contents in soil. The amplifications of livestock manures and natural organic materials are higher then half decomposed organic materials. Comparing with fertilizers only, all kinds of organic materials increase the contents of each Mn fraction. For Weak acid soluble (Aci.) fraction of Mn, natural organic materials increase most, for Reducible (Red.) fraction, livestock manures increase most, for Oxidizable (Oxi.) fraction, all kinds of organic materials are nearly the same, and for Residual (Res.) fraction, livestock manures increase most. In addition, different kinds of organic materials also lead to morphologic transformation of Mn, comparing with fertilizers only, livestock manures lead to inert transformation, while natural organic materials lead to active transformation, and half decomposed organic materials lead to inert transformation.

• Periodical: Applied Mechanics and Materials (Volumes 675-677)
• Pages: 918-924
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.675-677.918
• Online since: October 2014
• Authors: Zi Yi Yang*, Jing Gui Wu, Chuang Chen, Na Na Feng
• Keywords: Black Soil, Fraction Change, Mn, Organic Material

References

[6] 76.

[20] 97.

[1] 19.

97.

[2] 89.

[80] 67 Dung.

[7] 27 392. 34.

[15] 92.

[3] 90.

[9] 32 254. 75 Pig manure.

[7] 63 308. 91.

[21] 10.

[7] 93.

[10] 22 303. 09 Chicken manure.

[8] 03 270. 11.

[21] 37.

[8] 19.

[15] 03 300. 21 Leaf.

[6] 14 431. 06.

[10] 01.

98.

[5] 05 222. 12 Straw.

[6] 42 593. 42.

[9] 33.

[1] 22.

[11] 34 302. 43 Rice chaff.

[6] 69 502. 45.

[9] 01.

[1] 37.

[10] 66 305. 90 Peat.

[6] 33 189. 42.

[3] 39.

[1] 13.

[6] 42.

[91] 88 Bacteria residue.

[6] 04 462. 44.

[5] 67.

[2] 96.

[10] 98 280. 99 Determination of basic physical-chemical characteristics. The pH values were determined by glass electrode method. Organic matter contents were determined by potassium dichromate oxidation titration method. Determination of total Mn contents. Using HNO3-HCLO4-HF method to digest the soil [] Lu R K: China's agricultural science and technology press, Beijing. (1999).