摘要
【目的】以1年生平茬后的云南松苗木为材料,研究不同氮、磷配施对云南松苗木的萌蘖能力的影响,并筛选最佳的氮磷配施用量。【方法】以1年生云南松苗木为研究对象,采用2因素3水平3×3回归设计,研究云南松苗木平茬后土壤氮、磷配施对云南松苗木萌蘖能力的影响。【结果】云南松苗木平茬后的萌蘖数量符合Logistic增长过程并不受氮、磷肥配施的影响;施用氮、磷肥可促进云南松苗木的萌蘖能力,可影响苗木第二次萌蘖的时间和高峰,且苗木萌蘖数量配施效果较单施好;云南松苗木萌蘖数量对氮、磷配施的响应规律符合二元二次回归方程,在施氮肥0.29 g·株^(-1)、磷肥1.02 g·株^(-1)时,苗木的萌蘖数量达到最大;施用氮、磷肥可促进云南松苗木潜在萌条和有效萌条生长,潜在萌条单施且单施磷肥效果比配施效果好,有效萌条在0.4、0.8 g·株^(-1)的氮磷配合施用时效果更佳。【结论】氮磷配施比单施更利于萌蘖数量的增加,高磷处理有利于潜在萌条的生长,中等浓度的氮磷配合施用更有利于有效萌条的生长。
【Objective】Effect of N and P fertilization on the sprouting of Pinus yunnanensis seedlings was studied.【Methods】One-year-old P.yunnanensis seedlings after coppicing were used in a two-factors-three-levels 3×3 regression experimentation to optimize the fertilization.【Results】The number of sprouts emerged from the seedlings after coppicing followed the logistic growth pattern independent of N/P application.However,the fertilization promoted the sprouting,altered the time and peak of second sprouting,and increased the sprout count more than when N or P was applied alone.The tillers responded to the N/P application in a binary quadratic regression function to reach the highest count with the input of 0.29 g of N and 1.02 g of P per plant.The combined N/P application enhanced the growth of both potential and effective sprouts on the seedlings,especially,on the effective sprouts,the best result was to use N at 0.4 g and P at 0.8 g·plant^(-1).On the other hand,application of N or P alone exerted a greater effect than the combined one on the potential sprouts.【Conclusion】Combined N/P fertilization was more conducive to the increase of the number of sprouts on the seedlings than N or P fertilizer was applied alone.Although high P fertilization benefitted the growth of potential sprouts,when combined with N the application at a medium concentration encouraged the growth of effective sprouts.
作者
王雪
汪梦婷
杨振欣
罗茜
陈林
唐军荣
陈诗
蔡年辉
许玉兰
王德新
WANG Xue;WANG Mengting;YANG Zhenxin;LUO Xi;CHEN Lin;TANG Junrong;CHEN Shi;CAI Nianhui;XU Yulan;WANG Dexin(Key Laboratory of Biodiversity Conservation in Southwest China,State Forestry Administration,Southwest Forestry University,Kunming,Yunnan 650224,China;Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China,Ministry of Education,Southwest Forestry University,Kunming,Yunnan 650224,China;Agriculture,Forestry,Water and Emergency Service Center,Tuanjie Street,Xishan District,Kunming,Yunnan 650118,China)
出处
《福建农业学报》
CAS
CSCD
北大核心
2023年第1期39-46,共8页
Fujian Journal of Agricultural Sciences
基金
云南省万人计划青年拔尖人才项目(YNWR-QNBJ-2019-075)
国家自然科学基金(31860203)
云南省研究生导师团队建设项目(2022-97)
西南林业大学第一批预研基金(01108-18200133)
关键词
云南松
平茬
氮、磷配施
萌蘖能力
Pinus yunnanensis Franch
coppicing
N/P fertilization
sprouting ability
作者简介
王雪(1997-),女,硕士研究生,主要从事林木遗传育种研究(E-mail:1334091850@qq.com);通信作者:许玉兰(1979-),女,教授,主要从事林木遗传育种研究(E-mail:xvyulan@163.com);通信作者:王德新(1983-),男,讲师,主要从事林木遗传育种研究(E-mail:woshixin2007@126.com)
