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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (27): 153-157.doi: 10.11924/j.issn.1000-6850.2014-0410

Special Issue: 水稻

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Effects of Different Measures on the Concentration of Reducing Substances of Soil and Yield of Rice in Cold Waterlogged Paddy Field

  

  • Received:2014-02-21 Revised:2014-02-21 Accepted:2014-04-24 Online:2014-10-15 Published:2014-10-15

Abstract: A trial was conducted to clarify the effects of different measures on the concentration of reducing substances of soil and grain yield of rice in cold waterlogged paddy field. The purpose was to provide theoretical basis for selecting and utilizing suitable amelioration materials. Field trial was designed with 6 treatments, including the optimized fertilization and different measures (lime, organic matter and straw). The effects of each treatment on soil Eh, concentration of soil reducing substances, rice grain yield and nutrients uptakes were compared. The results showed that optimized fertilization decreased the total of soil reducing substances and improved the yield by 26.2% compared to that of the control. The grain yield of the treatments of lime and organic fertilizer had no significant difference compared with that of the treatment of optimized fertilization. Straw returning increased the Eh and decreased the concentration of soil reducing substances, improving the yield by 14.2%. The treatment of the combination of lime and straw not only increased soil Eh, but also decreased the concentration of soil active reducing substances and Fe2 + by 40.0% and 49.3% respectively, and improved the yield by 19.8% compared to that of the treatment of optimized fertilization. So, scientific fertilization, and the combined application of lime and straw were both effective measures to decrease the concentration of reducing substances in cold waterlogged paddy field.