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Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (11): 77-80.doi: 10.11924/j.issn.1000-6850.casb16050039

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Effect of Straw Turnover on Soil Nutrients and Soil Microbial Population

Dong Liang1,2, Tian Shenzhong1,3, Wang Xuejun1,3, Sun Zeqiang1,3, Zheng Dongfeng1,3, Liu Shenglin1,3, Dong Xiaoxia1,3, Guo Honghai1,2, Luo Jiafa2   

  1. (1Institute of Agricultural Resources and Environment, Shandong Academy of Agricultural Science, Jinan 250100;2Key Laboratory of Agro-environment in Huanghuaihai Plain, Ministry of Agriculture, Jinan 250100;3Scientific Observing and Experimental Station of Arable Land Conservation (Shandong), Ministry of Agriculture, Jinan 250100)
  • Received:2016-05-09 Revised:2016-07-14 Accepted:2017-01-04 Online:2017-04-26 Published:2017-04-26

Abstract: In order to inspect Effects of returned-straw on soil nutrients and soil microorganism,we investigated the soil nutrient capacity and soil microorganism amount by field experiment.The results showed that returned-straw could increase the soil organic matter by 0.02-0.04 percent point, increase available nitrogen, available phosphorus, available potassium respectively by 6.64-9.00mg/kg,3.37-4.07mg/kg,10.33-19.00mg/kg,increase amount of soil bateria,fungi and actinomycetes respectively by 2.2×108/g -3.1×108/g、0.5×106/g -3.5×106/g、1.3×107/g-1.9×107/g. But excessive returned-straw amount was not benefit for farmland productivity.