LIU Yan-lan, HAO Ming-de, GUO Xian-shi. Effect of Long-term Fertilization on Spatial Distribution and Availability of Soil Potassium in the Dark Loessial Soil[J]. 2011, 25(5).
LIU Yan-lan, HAO Ming-de, GUO Xian-shi. Effect of Long-term Fertilization on Spatial Distribution and Availability of Soil Potassium in the Dark Loessial Soil[J]. 2011, 25(5).DOI:
The spatial distribution and availability of soil potassium in loess plateau after 24 years of long-term fertilization were investigated in this study.The result showed that the quantity of potassium
except the nonspecifically absorbed K with the chemical fertilizer application
in the 0-20 cm soil layer was larger than that in 20-40 cm soil layer in all treatments and the quantity of potassium gradually decreased with depth below in the 60 cm soil layer.The quantities of K in 0-300 cm soil layer in the trea...