首页|Relationships between foliar phosphorus fractions of Pinus sylvestris var. mongolica and soil available phosphorus
Relationships between foliar phosphorus fractions of Pinus sylvestris var. mongolica and soil available phosphorus
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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 (0.12-0.63mg/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.
foliar P fractionssoil P supplyPinus sylvestris var. mongolica
Qiong ZHAO、Xingyu LIU、Dehui ZENG、Jinhuan LIU、Yalin HU
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Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
National Science & Technology Supporting Program of China国家重点基础研究发展规划(973计划)国家自然科学基金
NETL
NSTL
万方数据
