1. China Agricultural Yearbook;MOA (Ministry of Agriculture),2012
2. Assessment of limiting factors and techniques prioritization for maize production in China;Wang;Agric. Sci. China,2010
3. Mechanism of fertility degradation of black soil in corn belt of Songliao plain;Zhao;Acta Pedol. Sin.,2006
4. Fertility evolution characteristics and fertilizing technologies of black soil in the corn belt of the Songliao plain;Zhao;J. Jilin Agric. Univ.,2008
5. Research on rational plough layer construction of spring maize soil in northeast China;Wang;J. Maize Sci.,2008