
Effects of slow-release fertilization rates on seedling quality and field survival rates of four exotic oaks
WEI Ning, LI Guolei, CAI Mengxue, SHI Wenhui, LIU Wen, XUE Liu, LI Jinyu
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (3) : 53-60.
Effects of slow-release fertilization rates on seedling quality and field survival rates of four exotic oaks
【Objective】Oaks are widely distributed species which have high ornamental values. This study analyzes the effects of nitrogen rates on seedling growth, nutrient storage, non-structural carbon (NSC) content, and survival rates of four exotic oaks seedlings to explore the optimum nitrogen rate. These information is important for cultivating high quality seedlings of these four oaks. 【Method】 During the first growing season, Quercus robur, Q. coccinea, Q. rubra, Q. palustris seedlings were produced by applying five N fertilization application rates (25, 100, 150, 200 and 400 mg per seedling) by using a slow-release fertilizer. Seedling height, root-collar diameter (RCD), biomass, nutrient content and NSC content were measured at the end of the first growing season. At the beginning of the second growing season, seedlings were transplanted into the field and the survival rate was measured one year later. 【Result】 The height, RCD, biomass, nutrient content, starch content, and soluble sugar content of Q. robur seedlings reached a maximum with 200 mg per seedling applied, while the seedling biomass reduced with 400 mg per seedling applied. For Q. coccinea, height, RCD, biomass and soluble sugar content reached highest values with 150 mg per seedling applied while the nutrient content and starch content reached highest values with 200 mg per seedling applied. For Q. rubra, the nutrient content increased with the increasing of N applied and no significant difference showed in height, RCD, biomass and NSC content. For Q. palustris, RCD content increased significantly with the increasing of the fertilization rate. Height and biomass had no longer increase when N applied more than 100 mg per seedling. The nutrient content increased significantly among the fertilization treatments and no significant difference showed in NSC content. One year after transplantation, the highest survival rates of Q. palustris, Q. coccinea, Q. robur and Q. rubra were 95.0%, 30.0%, 55.0%, and 45.0%, respectively. 【Conclusion】 Based on the results at the first growing season, the optimum N rate for Q. robur one-year-old container seedling is 200 mg per seedling, while 150-200 mg per seedling for Q. coccinea. For Q. rubra and Q. palustris, the optimum N rates are higher than 400 mg per seedling. The survival rates of the four species were not affected by the fertilization treatments.
Quercus robur / Q. coccinea / Q. rubra / Q. palustris / slow-release fertilizer / seedling quality / survival rate
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
李国雷, 刘勇, 祝燕, 等. 国外容器苗质量调控技术研究进展[J]. 林业科学, 2012,48(8):135-142.
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
李国雷, 刘勇, 祝燕, 等. 苗木稳态营养加载技术研究进展[J]. 南京林业大学学报(自然科学版), 2011,35(2):117-123.
|
[15] |
刘欢, 王超琦, 吴家森, 等. 氮素指数施肥对杉木无性系苗生长及养分含量的影响[J]. 应用生态学报, 2016,27(10):3123-3128.
|
[16] |
林平, 邹尚庆, 李国雷, 等. 油松容器苗生长和氮吸收对指数施肥的响应[J]. 南京林业大学学报(自然科学版), 2013,37(3):23-28.
|
[17] |
|
[18] |
黄利斌. 北美栎树引种栽培技术研究[D]. 南京:南京林业大学, 2007.
|
[19] |
陈益泰, 孙海菁, 王树凤, 等. 5种北美栎树在我国长三角地区的引种生长表现[J]. 林业科学研究, 2013,26(3):344-351.
|
[20] |
李国雷, 祝燕, 蒋乐, 等. 指数施肥对栓皮栎容器苗生长和氮积累的影响[J]. 东北林业大学学报, 2012,40(11):6-9.
|
[21] |
|
[22] |
姚光刚, 李国雷, 郑永林, 等. 缓释肥施用量对槲栎容器苗苗木质量的影响[J]. 南京林业大学学报(自然科学版), 2019,43(1):69-75.
|
[23] |
|
[24] |
|
[25] |
鲍士旦. 土壤农化分析[M]. 北京: 中国农业出版社, 2000.
|
[26] |
程中倩, 李国雷. 氮肥和容器深度对栓皮栎容器苗生长、根系结构及养分贮存的影响[J]. 林业科学, 2016,52(4):21-29.
|
[27] |
|
[28] |
李国雷, 祝燕, 李庆梅, 等. 红松苗龄型对苗木质量和造林效果的影响[J]. 林业科学, 2012,48(1):35-41.
|
[29] |
祁鲁玉, 吴峰, 吴瑞雪, 等. 遮阴和不同形态氮素施肥对红松幼苗生长的影响[J]. 森林工程, 2019,35(4):1-5.
|
[30] |
胡丁猛, 臧真荣, 王开芳, 等. 不同水肥对猩红栎轻基质容器苗生长的影响[J]. 山东农业科学, 2012,44(12):54-56.
|
[31] |
|
[32] |
梁建萍, 贾小云, 刘亚令, 等. 干旱胁迫对蒙古黄芪生长及根部次生代谢物含量的影响[J]. 生态学报, 2016,36(14):4415-4422.
|
[33] |
段世宇. 施氮对毛白杨生长及养分含量的影响[J]. 江苏林业科技, 2019,46(4):9-12.
|
[34] |
|
[35] |
|
[36] |
于德林, 王冬, 刘晓菊, 等. 熊岳树木园栎类树种引种栽培及育苗技术[J]. 辽宁林业科技, 2017,(6):62-65.
|
[37] |
杨振亚, 台秀国, 曹振玉, 等. 4个引种栎类树种苗期抗寒性初步研究[J]. 山东大学学报(理学版), 2016,51(5):43-47,60.
|
/
〈 |
|
〉 |