| 摘要: |
| 短肋羽藓(Thuidium kanedae)是一种分布广泛、景观价值高的藓类植物,但目前缺乏相关的栽培研究。为获得适合短肋羽藓生长发育的最优施肥处理,该文以不施肥(CK)作为对照,采用尿素(N肥)、过磷酸钙(P肥)和硫酸钾(K肥)组合处理,设置3个施肥水平(1～3)的施肥方案。通过观测不同处理中短肋羽藓的生长长度、覆盖度和植株颜色占比,筛选有利于其生长及植株呈色的施肥方案,并测定优选施肥方案中苔藓相关生理指标的变化,以探讨施肥对短肋羽藓的生长生理特征的影响。结果表明:(1)N1、N2P2K2处理下植株覆盖度最大且显著均高于CK; 植株长度以N1、N2K2处理下最高且大于CK; N3P3K3和N2P2K2处理的植株绿度维持效果最好。(2)N肥、NK、NPK配施方案对短肋羽藓生长的促进作用最好,这些处理总体上植株叶绿素、类胡萝卜素和可溶性糖含量均高于CK,可溶性蛋白含量低于CK。(3)相关性分析表明:绿色占比与覆盖度呈极显著正相关,生长长度与植株叶绿素含量呈极显著负相关。综合分析可知,不同肥施处理对短肋羽藓的生长及植株呈色具有不同程度的影响,人工栽培的短肋羽藓施肥方案应以N肥为主,P、K配施为辅,其中,N2P2K2(N、P、K的施肥量依次为26、14、28 kg·hm-2·a-1)处理下,短肋羽藓的生长状况和绿度最好。 |
| 关键词: 短肋羽藓, 施肥方案, 生长状况, 生理响应, 植物颜色 |
| DOI：10.11931/guihaia.gxzw202209013 |
| 分类号:Q945 |
| 文章编号:1000-3142(2024)03-0554-10 |
| Fund project:国家自然科学基金(31960328)。 |
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| Effects of nitrogen, phosphorus and potassium fertilizers on growth, physiology and plant color of Thuidium kanedae |
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YANG Shuoyuan, WANG Xiurong*, SHI Bingyang, CHEN Hongmei
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College of Forestry, Guizhou University, Guiyang 550025, China
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| Abstract: |
| Thuidium kanedae is a kind of moss with wide distribution and high landscape value. However, we lack information about the cultivation of T. kanedae. To investigate an appropriate scheme of fertilization for the growth and development of T. kanedae, pot culture experiments were conducted with no fertilization(CK)as control, using urea(N fertilizer), calcium superphosphate(P fertilizer)and potassium sulfate(K fertilizer)combination treatments, set three levels(1-3)fertilization schemes. We investigated the growth length, coverage and color ratio of T. kanedae in various treatments, and we confirmed the fertilization scheme conducive to its growth. At the same time, the changes of related physiological indexes of plants in the optimal fertilization scheme were measured to explore the effects of fertilizer on the growth and physiological characteristics of T. kanedae. The results were as follows:(1)The coverages of T. kanedae under N1 and N2P2K2 treatments were the highest and significantly higher than that of CK. The plant length under N1 and N2K2 treatments were the highest and larger than that of CK. The plants treated with N3P3K3 and N2P2K2 had the best green degree maintenance.(2)N fertilizer and combined application of NK and NPK had the best promotion effects on the growth of T. kanedae. Overall, the contents of chlorophyll, carotenoid and soluble sugar under these treatments were higher than that of CK, while the content of soluble protein was lower than that of CK.(3)The correlation analysis showed that the green proportion was highly significantly and positively correlated with the coverage, the growth length was highly significantly and negatively correlated with the chlorophyll content of the plant. The results of this study illustrate that different treatments of fertilizer have different effects on the growth and color of T. kanedae. N fertilizer should be the main fertilizer for T. kanedae, and P and K combined application should be supplemented. N2P2K2(N, P, K fertilization rates are 26, 14, 28 kg·hm-2·a-1 respectively)treatment has the best effects on the growth status and green degree of T. kanedae. |
| Key words: Thuidium kanedae, fertilization schedule, growth condition, physiological response, plant color |
