【摘要】：為了解長期不同施肥措施下黃壤碳、氮、磷生態(tài)化學(xué)計量學(xué)特征,研究以貴州黃壤長期定位試驗2003~2013共11年土樣為研究對象,測定分析土壤碳、氮、磷養(yǎng)分及生態(tài)化學(xué)計量指標(biāo)變化特征,旨為黃壤培肥、增加土壤碳匯提供重要理論依據(jù)。結(jié)果表明:(1)長期不同施肥措施下,有機碳、全氮、全磷含量變化較一致,均以有機肥處理較高,且隨有機肥施用量增加而增加;(2)不同處理土壤C/N、C/P、N/P比變化范圍為13.49~15.58、13.72~17.86、0.99~1.28,通過各處理變異系數(shù)和碳、氮、磷兩兩相關(guān)分析可知,黃壤C/N比較穩(wěn)定,碳氮變化一致,而C/P、N/P比變化較大;(3)C/N、C/P比與有機碳呈極顯著正相關(guān)關(guān)系,N/P比與全氮呈極顯著正相關(guān)關(guān)系,但相關(guān)系數(shù)各不同;(4)與中國和世界土壤C/N/P比平均水平相比,黃壤碳、氮、磷比例失衡。
[Abstract]:In order to understand the ecological chemometrics characteristics of carbon, nitrogen and phosphorus in yellow soil under different fertilizer application measures for a long time, the soil samples of Guizhou yellow soil long-term positioning experiment 2003 / 2013 were studied. The changes of soil carbon, nitrogen, phosphorus nutrients and ecological stoichiometric indexes were determined and analyzed in order to provide an important theoretical basis for the cultivation of yellow soil fertilizer and the increase of soil carbon sequestration. The results showed that: (1) under different fertilizer measures for a long time, the contents of organic carbon, total nitrogen and total phosphorus changed in the same way, and the organic fertilizer treatment was higher and increased with the increase of organic fertilizer application rate; (2) the variation range of C 鈮，

本文編號：2528072