Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2013, Vol. 29 ›› Issue (30): 55-59.doi: 10.11924/j.issn.1000-6850.2012-2643

Special Issue: 玉米 耕地保护

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Effects of Applying Saline-alkali Soil Amendments in Different Seasons on Silage Maize Growth in Saline-alkali Soils of the River Irrigation Region

  

  • Received:2012-07-27 Revised:2012-08-29 Online:2013-10-25 Published:2013-10-25

Abstract: The purpose of this study was to determine the effects of applying saline-alkali soil amendments on saline-alkali soils and on silage maize growth in different seasons (Spring or Autumn) in the river irrigation region, analysis the changes of pH, EC and alkalinity in the soils (0-20 cm). The field experiment using silage maize (Zea mays L. cv. Ruide 2) as trial crop was conducted to investigate the effects of applying Desulfurized gypsum, Guo-chan DS, and Desulfurized gypsum + Guo-chan DS in spring and autumn on the emergence rate and fresh yield in the severe soda saline-alkali soil. The results showed that, after application of soil amendments, the emergence rate of silage maize was increased by 6.8%-72.7%, fresh yield of silage maize was increased by 1223.2-28144.8 kg/hm2, soil pH reduced 0.09-0.83, EC value enhanced 0.13-1.26 mS/cm and alkalinity declined 1.6%-19.8% compared to the control. The emergence rate and fresh yield of silage maize was significantly increased after application of Desulfurized gypsum, and Desulfurized gypsum + Guo-chan DS in both autumn and spring. Application soil amendments in autumn had better effect of improving saline-alkali soils than in spring. The application in autumn of Desulfurized gypsum + Guo-chan DS had the best effect of improving saline-alkali soils among three soil amendments.

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