8LI PS(林鹏生).Studies on medium-low farmland distribution and production growth potential in China(中国中低产田分布及增产潜力研究)[D].Beijing:Chinese Academy of Agricultural Sciences(CAAS).(北京:中国农业科学院),2008:50-103.
9Planting Department of Agricultural Department.National Agricultural Technology Promotion Service Center(农业部种植业司.全国农业技术推广服务中心).Questions and answers regarding fertilizing technology(土配方施肥技术问答)[M].Beijing:China Agriculture Press(北京:中国农业出版社),2005:1.
