粉煤灰复田立地欧美杨营养诊断研究  

Study on Nutritional Diagnosis of Populus×euramericana in Reclaimed Area by Coal Ash

作　　者：王世绩[1] 刘雅荣[1] 刘建伟[1] 张建国[1] 冷国友[1] 周树理[1] 

机构地区：[1]中国林业科学研究院林业研究所,淮北矿务局林业处

出　　处：《林业科学研究》1996年第3期268-272,共5页Forest Research

基　　金："八五"攻关项目

摘　　要：（１）叶片营养诊断表明，粉煤灰复田立地上欧美杨处于Ｎ素和Ｐ素营养亏缺状态，而Ｋ素较为充足，但施Ｋ有利于林木对Ｐ素的吸收，效应仍很显著。（２）相关分析表明，叶片Ｎ、Ｋ素浓度与生长呈正相关关系，而Ｐ则呈负相关关系，说明叶片Ｐ素含量与生长的关系实质上是一种“稀释效应”。The nutritional diagnosis of the leaves shows that in the reclaimed area bycoal ash, the trees of P.× euramericana are in a state of nutrition deficiency,so the applica-tion of N not only raised the N concentration of the leaves,but promoted bothe tree growthand its absorption of K,Ca,Mg etc.nutritional elements.The application of P mainly raisedthe P concentration of the leaves and solved the problem of P deficiency.(2) The correlationanalvsis shows that the application of K helps to promote the absorption of P. From the re-sult of K application,it shows that the appropriate K value of 1.5%proposed by J. Garbayeis obviously on the low side,which is not suitable for the poplar clone we're dealing with.(3)The application of green manure can raised the Mg and P concentration of P.×eurameri-cana's leaves,but its mechanism of significant effect has to be studied further.(4)The N,Kconcentration of the leaves has a positive correlation with the growth of P.×euramericana,which shows that the higher the leaf concentration,the bigger the tree increment.On thecontrary,the P concentration of the leaves has a negative correlation with the tree growth,which shows that in face,the relationship between P concentration and tree growth is a kindof“diluted effect”.

关 键 词：粉煤灰复垦 欧美杨 施肥 营养诊断 杨树 

分 类 号：S792.119[农业科学—林木遗传育种]