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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (5): 101-105.doi: 10.11924/j.issn.1000-6850.casb15080130

Special Issue: 现代农业发展与乡村振兴

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Application Situation and Development Countermeasures of Chemical Fertilizer in Yangzhou

  

  • Received:2015-08-26 Revised:2015-10-23 Accepted:2015-11-19 Online:2016-02-19 Published:2016-02-19

Abstract: The variation trends of crop yield and chemical fertilizer application in sixty years were studied to know the status of farmland quality in Yangzhou. The results showed that the crop yield increased generally from 2227.5 kg/hm2 to 10732.5 kg/hm2, and the application amount of chemical fertilizer increased first and then decreased. The relationship between the crop yield and the chemical fertilizer application amount were analyzed, and it presented an apparent correlation from 1952 to 1982 (R2=0.8110). The authors elaborated the problems in farmland quality and fertilizer use efficiency, and analyzed the reasons behind these problems. The ountermeasures for improving the farmland quality were proposed, such as gradually improving basic soil fertility and fertilizer use efficiency to guarantee the sustainable development of farmland quality.

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