| 氮磷配施对云南松苗木生长及养分积累的影响 |
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| 引用本文： | 李亚麒,许玉兰,唐军荣,和滢埝,王丹,李江飞,蔡年辉.氮磷配施对云南松苗木生长及养分积累的影响[J].浙江农林大学学报,2023,40(1):115-125. |
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| 作者姓名： | 李亚麒 许玉兰 唐军荣 和滢埝 王丹 李江飞 蔡年辉 |
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| 作者单位： | 1.西南林业大学 林学院，云南 昆明 6502242.云南省农业科学院 热带亚热带经济作物研究所，云南 保山 678000 |
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| 基金项目： | 云南省教育厅科学研究基金项目(2019Y0124)；国家自然科学基金资助项目(31860203) |
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| 摘 要： | 目的 开展氮磷配施，揭示云南松Pinus yunnanensis苗木生长及养分积累对氮磷配施的响应，为优化云南松苗期养分管理及苗木培育提供理论依据。 方法 以2年生云南松盆栽苗为研究对象，设置对照(不施肥)、磷肥0.8 g·株?1(P1)、磷肥1.6 g·株?1(P2)、氮肥0.4 g·株?1 (N1)、氮肥0.8 g·株?1(N2)、氮肥0.4 g·株?1和磷肥0.8 g·株?1(N1P1)、氮肥0.4 g·株?1和磷肥1.6 g·株?1 (N1P2)、氮肥0.8 g·株?1和磷肥0.8 g·株?1 (N2P1)、氮肥0.8 g·株?1和磷肥1.6 g·株?1 (N2P2)等9个不同施肥处理，分析不同施肥对云南松苗木生长及养分积累的影响。 结果 各施肥处理的总生物量、苗木质量均大于对照组，N1P1处理下苗木总生物量和苗木质量最大。各器官的养分积累从大到小依次为叶、茎、根。各施肥处理的器官及单株氮、磷、钾储量与对照组之间总体上均具有显著差异(P＜0.05)，较对照组均有不同程度增加。N1P1处理下苗木根、茎、单株的氮、钾储量最大，根、茎、叶、单株的磷储量最大，N2P1处理下叶的氮、钾储量最大。氮、磷、钾养分分配格局从大到小依次为叶、茎、根。 结论 施肥促进了云南松苗木的生物量积累，提高了苗木质量，促进了苗木各器官的养分积累，并增大了根、茎的养分分配，减小了对叶的养分分配。氮磷配施的效果优于单施氮肥，单施氮肥的效果优于单施磷肥，N1P1处理为最优配施组合。图6表5参38
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| 关 键 词： | 云南松 配比施肥 生物量 养分积累 |
| 收稿时间： | 2022-03-16 |
Effects of different nitrogen and phosphorus combinations on seedling growth and nutrient accumulation of Pinus yunnanensis seedlings |
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| LI Yaqi,XU Yulan,TANG Junrong,HE Yingnian,WANG Dan,LI Jiangfei,CAI Nianhui.Effects of different nitrogen and phosphorus combinations on seedling growth and nutrient accumulation of Pinus yunnanensis seedlings[J].Journal of Zhejiang A&F University,2023,40(1):115-125. |
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| Authors: | LI Yaqi XU Yulan TANG Junrong HE Yingnian WANG Dan LI Jiangfei CAI Nianhui |
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| Institution: | 1.College of Forestry, Southwest Forestry University, Kunming 650224, Yunnan, China2.Institute of Tropical and Subtropical Cash Crops, Yunnan Academy of Agriculture Sciences, Baoshan 678000, Yunnan, China |
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| Abstract: | Objective This study tries to reveal the response of Pinus yunnanensis seedling growth and nutrient accumulation to exogenous N and P combined application, and to provide a theoretical basis for optimizing nutrient management and seedling cultivation of P. yunnanensis. Method 2-year-old potted seedlings of P. yunnanensis were taken as the research objects. 9 different fertilization treatments were set to analyze the effects of different fertilization treatments on the growth and nutrient accumulation of P. yunnanensis seedlings, including ck (no fertilization), P1 (P, 0.8 g per seedling), P2 (P, 1.6 g per seedling), N1 (N, 0.4 g per seedling), N2 (N, 0.8 g per seedling), N1P1 (N, 0.4 g per seedling, P, 0.8 g per seedling), N1P2 (N, 0.4 g per seedling, P, 1.6 g per seedling), N2P1 (N, 0.8 g per seedling, P, 0.8 g per seedling), N2P2 (N, 0.8 g per seedling, P, 1.6 g per seedling). Result The total biomass and seedling quality of each fertilization treatment were higher than those of ck, and those of N1P1 treatment were the highest. The nutrient accumulation of each organ ranging from large to small was leaf, stem and root. The N, P and K reserves of organs and individual plants of different fertilization treatments were significantly different from those of ck (P＜0.05), and increased in different degrees compared with ck. The seedlings under N1P1 treatment had the largest N and K reserves in root, stem and individual plant, and the largest P reserves in root, stem, leaf and individual plant, while the seedlings under N2P1 treatment had the largest N and K reserves in leaf. The distribution pattern of N, P and K nutrients was leaf, stem and root from large to small. Conclusion N and P combined application significantly improves biomass accumulation, seedling quality, as well as nutrient accumulation in each organ. It also increases the nutrient distribution of root and stem, and decreases the nutrient distribution of leaf. The combined application of N and P is superior to the single application of either N or P. Therefore, N1P1 is the optimal treatment. Ch, 6 fig. 5 tab. 38 ref.] |
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