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[1]刘鑫铭,荣海,吴承祯,等.模拟氮沉降对温郁金养分吸收及生长的影响[J].应用与环境生物学报,2019,25(05):1122-1132.[doi:10.19675/j.cnki.1006-687x.2018.12033]
　LIU Xinming,RONG Hai,WU Chengzhen**,et al.Effects of simulated nitrogen deposition on nutrient absorption and growth of Curcuma wenyujin Y. H. Chen et. C. Ling[J].Chinese Journal of Applied & Environmental Biology,2019,25(05):1122-1132.[doi:10.19675/j.cnki.1006-687x.2018.12033]
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模拟氮沉降对温郁金养分吸收及生长的影响
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年05期
页码:
1122-1132
栏目:
研究论文
出版日期:
2019-10-31

文章信息/Info

Title:
Effects of simulated nitrogen deposition on nutrient absorption and growth of Curcuma wenyujin Y. H. Chen et. C. Ling
作者:
刘鑫铭; 荣海; 吴承祯; 洪伟; 林勇明; 李键
1福建农林大学林学院 福州 350002 2武夷学院生态与资源工程学院 南平 354300 3陕西化龙山国家级自然保护区管理局 安康 725000
Author(s):
LIU Xinming1;  RONG Hai3;  WU Chengzhen2**;  HONG Wei1;  LIN Yongming1 & LI Jian1**
1 College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China 2 College of Ecology and Resource Engineering, Wuyi University, Nanping 354300, China 3 Shaanxi Hualongshan National Nature Reserve Administration, Ankang 725000, China
关键词:
氮沉降; 生物量; 光合作用; 养分; 温郁金
Keywords:
nitrogen deposition;  biomass;  photosynthesis;  nutrition;  Curcuma wenyujin Y. H. Chen et. C. Ling
分类号:
Q948.11
DOI:
10.19675/j.cnki.1006-687x.2018.12033
摘要:
为了解不同程度的氮沉降对温郁金养分吸收及生长的影响，通过向道地中药材温郁金（Curcuma wenyujin Y. H. Chen et. C. Ling）施加N 0 kg hm-2 a-1（CK）、50 kg hm-2 a-1（T50）、100 kg hm-2 a-1（T100）、150 kg hm-2 a-1（T150）4个浓度梯度的NH4NO3模拟氮沉降，取样测定温郁金的养分含量、生长指标、光合指标等. 结果表明：（1）模拟氮沉降对温郁金总氮含量、各部位氮磷钾含量和分配以及N/K值无影响，8、9、12月氮沉降处理的磷含量显著（P < 0.05）低于CK，7、8月T100和T150处理的钾含量显著（P < 0.05）高于CK，T100和T150处理能够增大N/P比值降低P/K值；（2）8、9、10月氮沉降对温郁金地上部分生长和毛根数量具有显著（P < 0.05）促进作用，对主根茎无影响，7、8、9月氮沉降使叶绿素a和胡萝卜素含量显著（P < 0.05）降低；氮沉降对温郁金的叶绿素b含量和气孔导度（Gs）无影响，但能够显著（P < 0.05）增大光合面积和净光合速率（Pn）；氮沉降能够显著（P < 0.05）促进温郁金地上生物量的增长，在9、10月能够显著（P < 0.05）促进温郁金地下和全株生物量的增长，对地上与地下生物量的比值、药材产量以及药用成分无影响. 综合看来氮沉降对温郁金营养元素吸收有一定的影响，能够促进植株生长；结果可为亚热带氮沉降加重环境下温郁金田间施肥管理和扩大温郁金在轻度酸雨区的栽培面积提供数据参考. （图7 表2 参44）
Abstract:
To understand the effects of varying degrees of N deposition on the nutrient uptake and growth of Curcuma wenyujin Y. H. Chen et. C. Ling, N deposition was simulated by applying NH4NO3 at four concentrations [0 kg hm-2 a-1 (CK), 50 kg hm-2 a-1 (T50), 100 kg hm-2 a-1 (T100), and 150 kg hm-2 a-1 (T150)] to C. wenyujin, which is an authentic Chinese herbal medicine. The nutrient content, growth index, and photosynthetic index of C. wenyujin were measured after sampling. The results showed that: (1) Simulated N deposition had no effect on total N content, the content or distribution of N, P, or K in various parts, or the N/K ratio in C. wenyujin. In August, September, and December, the P content for the N deposition treatment was significantly lower than that for CK (P < 0.05). In July and August, the K content for the T100 and T150 treatments was significantly higher than that for CK (P < 0.05). Both the T100 and T150 treatments increased the N/P ratio and reduced the P/K ratio. (2) In August, September, and October, N deposition significantly promoted the growth of the above-ground biomass and root number of C. wenyujin (P < 0.05) but had no effect on the main rhizome. In July, August, and September, N deposition significantly reduced chlorophyll a and carotene contents (P < 0.05). Nitrogen deposition had no effect on chlorophyll b content or stomatal conductance (Gs) but significantly increased the photosynthetic area and net photosynthetic rate (Pn; P < 0.05). Nitrogen deposition significantly promoted the growth of the above-ground biomass of C. wenyujin (P < 0.05). In September and October, N deposition significantly promoted the growth of both the underground and whole plant biomass of C. wenyujin (P < 0.05) but had no effect on the ratio of above-ground to underground biomass, medicinal yield, or the medicinal components. In general, N deposition had a certain effect on nutrient uptake and promoted plant growth in C. wenyujin. The experimental results may provide a reference for field fertilization management and the expansion of C. wenyujin cultivation into mild acid rain areas in environments where subtropical N deposition is elevated.

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更新日期/Last Update: 2019-10-25