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《Hubei Agricultural Sciences》 2012-04
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Analysis on the Nutrient Content in the Reddening Needles of Pinus tabulaeformis in Baotou City

FENG Wei1,GUO Run-cai1,GAO Yong1,JIANG Hai-rong2(1.Ecology and Environment College of Inner Mongolia Agricultural University,Huhhot 010019,China; 2.Landscaping Department of Baotou City,Baotou 014010,Inner Mongolia,China)  
In recent years,a phenomenon was appeared that the whole needles of Pinus tabulaeformis Carr.turned red from the top to the bottom in a large area of Baotou city.To figure out the relationship between this symptom and the nutrient content of the needles,the content of elements including N,P,K,Ca,Mg,Fe,Mn,Cu,Zn from different reddening extent needles and normal needles was analyzed.The results showed that there was significant difference in the content of N,Ca,and Cu between the serious reddening needles and normal needles.The content of P,Mg,and Fe was not significant different.There was a close relationship between the phenomenon of reddening needles and the lack of N element or the presence of excessive Ca element.The relationship between the phenomenon of reddening and the content of elements K,Fe and Zn was more complicated.
【Fund】: 国家林业行业专项(201104002-5);; 内蒙古自治区科技计划项目(20090514)
【CateGory Index】: S791.254
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