高原农业2025，Vol.9Issue(4)：440-444,481,6.DOI:10.19707/j.cnki.jpa.2025.04.003
施肥对西藏红豆杉苗木生长的影响
Effects of Fertilization on the Growth of Taxus wallichiana Zucc Seedlings
摘要
Abstract
In order to promote the growth and explore the effects of K and P elements on the growth of Taxus wallichiana Zucc seedlings,this study took 5a-growing seedlings as the research object,and analyzed the growth status and photosynthetic characteristics of Taxus wallichiana Zucc seedlings by applying KH2PO4 compound fertilizer,setting 3 levels of fertilizer application(5 g,10 g,15 g),and no fertilization as the control(CK).The results showed that proper fertilization had a significant effect on the growth of Taxus wallichiana Zucc seedlings.With the increase of fertilizer application,the growth indexes and photosynthetic parameters of Taxus wallichiana Zucc increased first and then decreased.When the optimal fertilizer rate of Taxus wallichiana Zucc seedlings was 10 g(K was 2.87 g,P was 2.28 g),the seedling height and ground diameter were the largest 6.23 cm,3.32 mm,the ratio of height to diameter was the smallest 4.39,and the net photosynthetic rate was the largest 3.684 μmol CO2/(m²·s).K and P promoted the growth of Taxus wallichiana Zucc seedlings.The ratio of K and P elements required for the growth of Taxus wallichiana Zucc seedlings was 5:4,and insufficient or excessive amount inhibited the growth of Taxus wallichiana Zucc seedlings.The research results provided theoretical support for the technical measures of strengthening seedlings of Taxus wallichiana Zucc,a rare species in Xizang.关键词
西藏红豆杉/K、P元素/苗木/生长状况/光合特性Key words
Taxus wallichiana Zucc/K and P elements/Nursery plant/Growth Status/Photosynthic Characteristics分类
农业科技引用本文复制引用
李少辉,德吉卓嘎,刘若怡,李永霞..施肥对西藏红豆杉苗木生长的影响[J].高原农业,2025,9(4):440-444,481,6.基金项目
"西藏高原林业生态工程重点实验室"资助. （）
