摘要
本文分析了施用矿质肥料后杉木苗的生理指标及根际土壤化学性质。试验结果表明:①明显增加了杉木苗的生物量,其中氮磷钾混施效果最好,单施氮肥茎叶生物量增加明显,但根/冠下降;磷钾混施根/冠增大,但对茎叶生长作用不明显。②氮磷钾混施和单施氮极大地提高了叶子叶绿素含量。③明显降低了苗木根际土壤的pH,还造成了水解氮、交换性钾和速效磷的根际亏缺,同时提高了根际微量元素铁、锰、锌、铜的有效性。
using mineral fertilizers,the biomass of chiners fir seedling was increased apparently,mired NPK treatment was the first.Single N treatment caused biomass increase of stalk and leaf,but decrease of root/crown value.Mixed Pk enhanced root/crown value,however,no significant influence on the growth of stalk and leaf.Both mixed NPK treatment and N treatment greatly increased chlorophyll.pH of rhizosphere soil was evidenth lower as a result of treatment of mineral fertilizing.Mineral fertilizers were responsible for rhizosphere deficiency in hydrolysable N,exchange K and active phosphorus,meanwhile rhizosphere soil micro-element were more available, such as Fe,Cu,Zn,Mn,etc.
出处
《浙江林业科技》
北大核心
1995年第5期21-24,共4页
Journal of Zhejiang Forestry Science and Technology
基金
国家自然科学基金
关键词
杉木苗
生理
根陈土壤
化学性质
杉木
chinese fir seedling
physiology
rhizosphere soil
chemical property