Relationship between mineral salt contents of host trees and Kerria lacca

Abstract

Abstract: With comparison and cluster analysis methods,the relationship between mineral salt contents of host trees and Kerria lacca was studied.The results showed that mineral salt contents of 7 different host trees and branches hosted by K.lacca or not were different significantly,which could be divided into 4 groups.Cluster analysis suggested that mineral salt contents of 7 host trees hosted by K.lacca could be divided into 7 kinds.There were some relationships between mineral salt contents of hosted branches and the thickness of raw lac,mortality,fecundity and secretion amount of K.lacca but not significant.Compared with control,the contents of nitrogen,phosphorus(P₂O₅) and iron in host branches of Schleichera oleosa decreased to different degrees,while that of sodium nearly had no change and that of potassium,calcium,magnesium,copper,zinc and manganese increased incoordinately,especially the calcium content,which was 5.3 times as that of the control branch.The mineral salts contents of the other host trees also increased or decreased.

Key words: Soil particle size fractionation, Loess Plateau, Canadian Prairie

CLC Number:

S899.2

CHEN Youqing, CHEN Xiaoming, LI Kun, SHI Lei, CHEN Zhiyong. Relationship between mineral salt contents of host trees and Kerria lacca[J]. cje, 2005, (5): 523-527.

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