西南林业大学学报2025，Vol.45Issue(7)：25-31,7.DOI:10.11929/j.swfu.202406029
氮磷配施对云南松平茬苗木异速生长的影响
Topdressing with Nitrogen and Phosphorus Affected the Allometry of Biomass in Pinus yunnanensis Seedlings After Stumping
摘要
Abstract
This study used a three-level 3×3 regression design with 2 factors of N and P to conduct a fertiliz-ation experiment on 1-year-old Pinus yunnanensis seedlings after stubble leveling and explored the growth rela-tionships between each organ and sprout,between each organ and root biomass,and between each organ and indi-vidual size.The results showed that the combined application of N and P fertilizers led to higher variability in bio-mass among different organs.After decapitating,there was a significant allometric growth relationship between various organs and shoots of P.yunnanensis seedlings.Most changes in needles-shoot allometry were not af-fected by variations in N and P fertilization.However,root-shoot and stem-shoot allometric curves changed,in-dicating that different levels of N and P fertilization would have varying effects on the growth of P.yunnanensis seedlings after decapitating.Under different N and P fertilization treatments,different allometric growth patterns were observed among various organs,with the majority showing an allometric growth relationship.In conclusion,the allometric growth relationship among various organs of P.yunnanensis seedlings after decapitating is influ-enced by fertilizer application,especially altering the shoot-allometry relationship with other organs.Most treat-ments exhibited an allometric growth relationship between roots,stems,aboveground parts and shoots with a slope close to or less than 0.500.Additionally,fertilizer application promoted biomass accumulation in various or-gans and accelerated seedling growth rate.关键词
云南松/生物量/平茬/异速生长/氮磷配施Key words
Pinus yunnanensis/biomass/stumping/allometry/nitrogen and phosphorus fertilizer分类
农业科技引用本文复制引用
孙赫,杨振欣,汪梦婷,蔡年辉,许玉兰..氮磷配施对云南松平茬苗木异速生长的影响[J].西南林业大学学报,2025,45(7):25-31,7.基金项目
云南省兴滇英才支持计划青年人才专项(YNWR-QNBJ-2019-075)资助 （YNWR-QNBJ-2019-075）
国家自然科学基金项目(31860203)资助 （31860203）
云南省农业联合专项重点项目(202301BD070001-152)资助 （202301BD070001-152）
云南省农业联合专项面上项目(202301BD070001-035)资助 （202301BD070001-035）
云南省研究生导师团队建设项目(2022-97)资助. （2022-97）
