Optimum combination of soil amendments under drip irrigation with different water sources in coastal areas of East China

  • Yahui Liu Institute of Coastal Agriculture, Hebei Acad. Agr. For. Sci., Center for Saline and Alkali Land Green. Eng. Technol. of Hebei Province, Key Laboratory of Plant Salt Tolerance Research of Tangshan City, Caofeidian 063299
  • Shumei Zhou School of Management and Economics, Hebei Univ. of Sci. & Technol., Center for Ecol. Econ. & Sust. Devel. of Hebei Province, Shijiazhuang 050018
  • Jianping Sun Institute of Coastal Agriculture, Hebei Acad. Agr. For. Sci., Center for Saline and Alkali Land Green. Eng. Technol. of Hebei Province, Key Laboratory of Plant Salt Tolerance Research of Tangshan City, Caofeidian 063299
  • Xiuping Wang Institute of Coastal Agriculture, Hebei Acad. Agr. For. Sci., Center for Saline and Alkali Land Green. Eng. Technol. of Hebei Province, Key Laboratory of Plant Salt Tolerance Research of Tangshan City, Caofeidian 063299
  • Zaijian Yuan Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Inst. of Ecoenviron. Sci. & Technol., Guangzhou 510650
Keywords: saline-alkali soil, orthogonal test, fresh water, brackish water, soil improvement

Abstract

The effects of drip irrigation (DI) with fresh water (FW) and brackish water (BW) on saline-alkali soil improvement were compared under treatments of five amendment combinations. The experiment was designed using the orthogonal test method and performed using an indoor DI system. Soil electrical conductivity (EC), pH, sodium adsorption ratio and soil nutrients were analyzed after DI both before evaporation and after one month of evaporation. The results showed that after one month of evaporation, soil EC increased by an average of 97.26% and 27.76% for the FW and BW treatments, respectively. Furthermore, it was shown that soil nutrients increased greatly under the BW treatment and that cow dung proved to be a leading agent influencing soil nutrients except available soil potassium (p<0.05). Consequently, the optimum combination of soil amendments was determined as 0.03 m3/m2 of straw, 3 kg/m2 of phosphogypsum, 0.04 m3/m2 of cow dung, 0.6 kg/m2 of humic acid and 0.18 kg/m2 of microbial fertilizer under the BW treatment.

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Published
2018-12-19
How to Cite
Liu, Y., Zhou, S., Sun, J., Wang, X., & Yuan, Z. (2018). Optimum combination of soil amendments under drip irrigation with different water sources in coastal areas of East China. Spanish Journal of Agricultural Research, 16(3), e1102. https://doi.org/10.5424/sjar/2018163-13165
Section
Soil science