The Effects of Different Organic Acids on Mobilizing Mineral Elements in Yellow Cinnamon Soil: A Comparative Study

doi:10.11924/j.issn.1000-6850.casb2020-0691

Abstract

Abstract:

To investigate the effects of different organic acids on mobilizing mineral elements in yellow cinnamon soil, tea polyphenol (TP) and low molecular weight organic acids (LMWOAs) with 10 mmol/L were used to study the difference of mobilization effects among mineral elements by soil extraction test. The results showed that the mobilization order of LMWOAs on Ca and Mg in yellow cinnamon soil was: tartaric acid > citric acid > acetic acid > oxalic acid. Oxalic acid showed strong mobilization ability on Fe, Mn, Cu and Zn, and the mobilization ability of oxalic acid on Fe and Cu were significantly stronger than that of other LMWOAs. The mobilization ability of citric acid on Mn was significantly higher than that of TP and other LMWOAs; the mobilization ability of tartaric acid on Zn was significantly higher than that of TP and other LMWOAs; the mobilization ability of acetic acid on Fe, Mn, Cu and Zn were significantly lower than that of TP and other LMWOAs. TP showed significantly lower mobilization ability on Ca, Mg, Fe, Mn and Zn compared with LMWOAs (except acetic acid), but the mobilization ability of TP on K and Cu were significantly higher than that of LMWOAs. Therefore, planting tea tree could accelerate the mobilization and migration of K and Cu (especially for K) in yellow cinnamon soil, improve the bioavailability of mineral elements while cause soil K deficiency and soil acidification.

Key words: tea polyphenol, low molecular weight organic acids, soil extraction, yellow cinnamon soil, mineral elements, mobilization, difference

CLC Number:

S153

Chen Hanying, Zhu Yiwei, Ge Gaofei. The Effects of Different Organic Acids on Mobilizing Mineral Elements in Yellow Cinnamon Soil: A Comparative Study[J]. Chinese Agricultural Science Bulletin, 2021, 37(24): 84-90.

Figures/Tables 7

References 28

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土壤类型	有机质/ (g/kg)	pH	土壤矿质元素含量
土壤类型	有机质/ (g/kg)	pH	K/(g/kg)	Ca/(g/kg)	Mg/(g/kg)	Fe/(g/kg)	Mn/(g/kg)	Cu/(mg/kg)	Zn/(mg/kg)
黄褐土	11.78	6.76	8.76	3.68	4.86	30.87	0.708	8.25	48.86

土壤类型	有机质/ (g/kg)	pH	土壤矿质元素含量
土壤类型	有机质/ (g/kg)	pH	K/(g/kg)	Ca/(g/kg)	Mg/(g/kg)	Fe/(g/kg)	Mn/(g/kg)	Cu/(mg/kg)	Zn/(mg/kg)
黄褐土	11.78	6.76	8.76	3.68	4.86	30.87	0.708	8.25	48.86

	pH	Ca	Cu	Fe	K	Mg	Mn	Zn
pH	1
Ca	-0.898^**	1
Cu	0.010	-0.265	1
Fe	-0.493^*	0.104	0.386	1
K	0.156	-0.208	0.873^**	-0.071	1
Mg	-0.970^**	0.975^**	-0.143	0.275	-0.177	1
Mn	-0.670^**	0.377	0.504^*	0.890^**	0.182	0.505^*	1
Zn	-0.848^**	0.752^**	0.053	0.605^**	-0.153	0.797^**	0.779^**	1

	pH	Ca	Cu	Fe	K	Mg	Mn	Zn
pH	1
Ca	-0.898^**	1
Cu	0.010	-0.265	1
Fe	-0.493^*	0.104	0.386	1
K	0.156	-0.208	0.873^**	-0.071	1
Mg	-0.970^**	0.975^**	-0.143	0.275	-0.177	1
Mn	-0.670^**	0.377	0.504^*	0.890^**	0.182	0.505^*	1
Zn	-0.848^**	0.752^**	0.053	0.605^**	-0.153	0.797^**	0.779^**	1