摘要
以2年生木荷为研究对象,设置4个不同氮添加水平(A1—0 g·株^(-1),A2—0.1449g·株^(-1),A3—0.2838 g·株^(-1),A4—0.4257 g·株^(-1)),研究不同氮添加量对木荷大规格容器苗生长量的影响。结果表明:(1)不同氮添加对木荷地径和苗高的影响,均表现为先增加后减小,A2处理最大。苗高的最大值为113.69 cm,地径的最大值为10.91 mm。(2)叶长以A4处理最大(18.29 cm),叶总数以A3处理最大(120片)。叶宽以A1处理最大(4.46 cm)。(3)随着氮添加量的增加,木荷容器苗根、茎、叶干质量均表现为A3处理最大,A2处理最小,茎、叶的干质量在4个处理间无显著差异(P>0.05),而木荷容器苗根、茎、叶的含水率均表现为随着氮素增加先增加后减少的趋势。
Using 2-year-old Schima superba as the research object,four different nitrogen addition levels(A1-0 g·Fplant^(-1),A2-0.1449 g·Fplant^(-1),A3-0.2838 g·Fplant^(-1),A4-0.4257 g·Fplant^(-1))were set up to study the effects of different nitrogen addition levels on the growth of large-sized container seedlings of Schima superba.(1)The effects of different nitrogen additions on the ground diameter and seedling height of Schima superba showed an initial increase followed by a decrease,reaching the maximum in A2 treatment.The maximum height of the seedlings was 113.69 cm,and the maximum ground diameter was 10.91 mm.(2)The leaf length reached the maximum(18.29 cm)in A4 treatment,and the total number of leaves reached the maximum(120 pieces)in A3 treatment.The maximum leaf width was in A1 treatment(4.46 cm).(3)With the increase of nitrogen addition,the dry weight of roots,stems,and leaves of Schima superba container seedlings showed the highest value in A3 treatment and the lowest value in A2 treatment.There was no significant difference in dry weight of stems and leaves among the four treatments(P>0.05),while the water content of roots,stems,and leaves of Schima superba container seedlings showed a trend of first increasing and then decreasing with the increase of nitrogen content.
作者
沈庆华
李求洁
林露花
周红敏
彭辉
Shen Qinghua;Li Qiujie;Lin Luhua;Zhou Hongmin;Peng Hui(Longquan Conservation Center of Qianjiangyuan-Baishanzu National Park,Longquan 323700,China;Forestry Bureau of Longquan City,Longquan 323700,China;Longquan Academy of Forestry,Longquan 323700,China)
出处
《防护林科技》
2024年第4期25-27,共3页
Protection Forest Science and Technology
基金
丽水市科技计划项目(2021SJZC037)。
关键词
氮添加
木荷
容器苗
生长量
nitrogen addition
Schima superba
container seedlings
growth
