Relationships between foliar phosphorus fractions of Pinus sylvestris var. mongolica and soil available phosphorus |
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Authors: | Qiong Zhao Xingyu Liu Dehui Zeng Jinhuan Liu Yalin Hu |
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Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China |
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Abstract: | In order to find out the best foliar diagnostic index of phosphorus (P) nutrition in Mongolian pine (Pinus sylvestris var. mongolica) in the southeastern Keerqin Sandy Lands, the concentrations of total nitrogen (N), inorganic P, organic P and total P in
needles of different ages and soil available P were examined. The results show that in the study area, soil available P was
rather low (0.12–0.63 mg/kg) and was significantly correlated with inorganic P (cPi) and total P (cPt) concentrations in current
year needles of Mongolian pine. The significant correlation between soil available P and needle cPt derived from the significant
correlation between cPi and cPt. Compared with cPt, cPi did reflect the level of soil P supply more accurately and more directly.
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Translated from Chinese Journal of Applied Ecology, 2008, 19(3): 494–498 译自: 应用生态学报] |
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Keywords: | foliar P fractions soil P supply Pinus sylvestris var mongolica |
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