Changes in phosphorus fractions, sorption and release in Udic Mollisols under different ecosystems

@article{Song2007ChangesIP,
  title={Changes in phosphorus fractions, sorption and release in Udic Mollisols under different ecosystems},
  author={Cheng Yuan Song and Xiao Zeng Han and Caixian Tang},
  journal={Biology and Fertility of Soils},
  year={2007},
  volume={44},
  pages={37-47}
}
A 20-year field trial was conducted to study the effects of ecological factors and fertilization on phosphorus characteristics of fertile Udic Mollisols under three ecosystems: (1) bare land ecosystem with no vegetation or fertilizers (BE), (2) natural ecosystem with native grasses but no fertilizers (NE) and (3) agroecosystem with a rotation of wheat–soybean–corn. The agroecosystem had received N and P fertilizers during 1985–1993 and had received no fertilizers (CK), N and P fertilizers (NP… CONTINUE READING