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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (4): 549-552.

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Effect of long-term no-tillage and application of organic manure on some properties of soil fertility in rice/wheat rotation

XU Yangchun1, SHEN Qirong1, LEI Baokun1   

  1. College of Resources and Environmental Sciences, Nanjing Agricultural University, Key Laboratory of Crop Growth Regulation of Ministry of Agriculture, Nanjing 210095
  • Received:1999-06-07 Revised:1999-08-16 Online:2000-07-25

Abstract: A field experiment from June 1983 to October 1997 was conducted to study the effect of long term no tillage and application of manure on soil fertility properties.The results showed that the contents of soil organic C, total N and available N in the treatment of fourteen consecutive year no tillage were all significantly higher in 0~5cm soil layer,while,lower in 5~10 and 10~20cm layers than in conventional tillage.The content of water stable aggregate in 0~20cm layer was increased in no tillage in that the soil structure was less destroyed.Based on various soil fertility properties,the contribution order of different fertilization treatments to soil fertility was as follows:pig manure>straw>green manure>chemical fertilizer>no fertilizer.