四川林业科技2025，Vol.46Issue(5)：66-72,7.DOI:10.12172/202504260001
不同海拔川滇高山栎种子虫害及其对种子质量的影响
Seed pests of Quercus aquifolioides at different altitudes and their impact on seed quality
摘要
Abstract
Quercus aquifolioides as a dominant broad-leaved tree species in southeastern Tibet,plays a crucial role in soil and water conservation,as well as water source retention in high-altitude regions.Currently,seed insect infestation is a major constraint affecting natural regeneration in secondary forest,seedling cultivation,and industrial utilization.This study investigated the seed insect infestation status of Q.aquifolioides and its impact on seed quality across different altitudes(3 000-3 500 m)on Sejila Mountain.The aim was to clarify the extent and characteristics of pest damage to provide a foundation for the conservation and utilization research of Q.aquifolioides resources.The results demonstrated that:(1)The infestation rate decreased significantly with increasing altitude.In the same period,the infestation rate was usually the highest at 3 000 m(reaching 95.05％in mid-August)and the lowest at 3 500 m(80.08％in mid-August).Concurrently,the infestation rate increased with delayed collection date.At the same altitude,the infestation rate increased progressively from mid-August to mid-September(increasing from 95.05％to 98.90％).(2)The seed quality exhibited a U-shaped pattern across the altitude gradient,being lowest at 3 200 m and highest at 3 500 m.(3)The thousand-seed weight and seed volume fluctuated with collection time and altitude.In mid-August,the thousand-seed weight increased with altitude(850.78 g at 3 000 m vs.1 152.08 g at 3 500 m).However,in mid-September,the thousand-seed weight at the mid-altitude(3 200 m)decreased drastically(640.63 g).Meanwhile,the seed volume peaked at 3400 m in mid-August(2.628 cm3),and decreased significantly at mid-to-high altitudes(3200-3 300 m)in mid-September.(4)The seedling emergence rate increased with altitude,with the highest at 3 500 m(reaching 35％in mid-August),and the emergence rate was significantly lower at low(3 000-3 100 m)and middle(3 200 m)altitude.Seeds collected in mid-September generally exhibited decreased emergence rate.关键词
川滇高山栎/虫害率/千粒重/出苗率Key words
Quercus aquifolioides/insect damage rate/1000-seed weight/seedling emergence rate引用本文复制引用
丁杰,朱仕杰,姚人元,曾加芹..不同海拔川滇高山栎种子虫害及其对种子质量的影响[J].四川林业科技,2025,46(5):66-72,7.基金项目
省级一流本科专业建设-生态学专业,教高厅函[2022]14号 （）
西藏农牧学院大学生创新创业训练计划项目"川滇高山栎种子虫害调查与研究"(项目编号:SK007) （项目编号:SK007）
2025年自治区级大学生创新创业训练计划项目"磷肥对川滇高山栎幼苗根系及叶内氮、磷、钾生化计量特征的影响" （）
