[Effect of different fertilization system on soil nutrient budget].
A long-term experiment was carried out on a damp palm soil about ten years under the condition of nutrient recycling and reutilization. The quantity of crop nutrients transferred from the system, and the nutrient budget of N, P and K in soil were studied. The results of a ten-year field experiment indicated that the use of nutrients recycled in the farming systems with appropriate amount of fertilizers applied according to the soil nutrient supplying ability could not only produce high crop yield, but also balance the soil nutrient budget, so that, there were no significant surplus of nutrients (mainly inorganic nitrogen) which might emit or leach out of soil into environment.
Yu
Wantai
W
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016.
Zhang
Lu
L
Yin
Xiuyan
X
Ma
Qiang
Q
Shen
Shanmin
S
D000383:Agriculture; D005308:Fertilizers; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011188:Potassium / Q000032:analysis; D012987:Soil / Q000032:analysis*
D005308:Fertilizers; D012987:Soil; D010758:Phosphorus; D009584:Nitrogen; D011188:Potassium