摘要
大果榛子(Corylus heterophylla×C.avellana)具有高抗寒、耐贫瘠的特性,种植广泛,具有良好的经济、社会、生态效益。以引黄灌区1年生大果榛子苗木为研究对象,对其进行分级,并对不同分级榛子苗生长变异特征进行分析。结果表明:1)利用“平均值±标准差”与频率分布图2种方法将1年生榛子苗木分为4级。2)随着苗木等级的下降,地径、株高、生物量、成活率呈下降趋势,变异系数呈上升趋势。综合各因素考虑,选取地径>1.0 cm、株高>33 cm的1年生榛子苗为优质苗,其中地径>1.4 cm、株高>46 cm的苗木为特优苗。
Large-fruited Corylus heterophylla×C.avellana is characterized by high cold resistance and barren tolerance,which is widely cultivated and has good economic,social and ecological benefits.Taking one-year-old large-fruited Corylus heterophylla×C.avellana seedlings in the Yellow River Irrigation District as the research object,this study classified the seedlings and analyzed the growth variation characteristics of hazelnut seedlings at different grades.The results showed as the following two aspects.1)One-year-old hazelnut seedlings were divided into four grades by using two methods:“mean±standard deviation”and frequency distribution diagram.2)With the decrease of seedling grade,ground diameter,plant height,biomass and survival rate showed a decreasing trend,while the coefficient of variation showed an increasing trend.Considering all factors,one-year-old hazelnut seedlings with ground diameter>1.0 cm and plant height>33 cm were selected as high-quality seedlings,among which seedlings with ground diameter>1.4 cm and plant height>46 cm were defined as superior seedlings.
作者
任建治
黄婷
全卓
Ren Jianzhi;Huang Ting;Quan Zhuo(Ningxia Wuzhong Hongsibu District Forestry and Grassland Bureau,Wuzhong 751900,China;College of Agriculture,Ningxia University,Yinchuan 750021,China)
出处
《防护林科技》
2026年第2期19-22,共4页
Protection Forest Science and Technology
基金
中央财政林草科技推广示范项目“贺兰山区域困难立地植被修复关键技术应用推广”(〔2023〕ZY 09)
中央财政林草科技推广示范项目“毛乌素沙漠西南缘植被生态修复关键技术示范推广”(〔2026〕ZY 03)。
关键词
引黄灌区
1年生大果榛子
苗木分级
Yellow River Irrigation District
one-year-old large-fruited Corylus heterophylla×C.avellana
seedling grading
