为了确定闽楠苗木的适宜施磷量,测定了8个水平施磷(0、7.5、15、22.5、30、40、60、90 mg/株)处理下闽楠苗木的生长特性和叶片养分状况。结果表明:(1)随着磷素供应水平的升高,闽楠苗高和总生物量均呈先升高后稳定的趋势,而地径呈增长—稳定—降低的趋势,拐点磷素供应量为22.5 mg/株;(2)随着磷素供应量的增加,闽楠苗木叶片氮和磷含量呈升高趋势,而钾含量先升高后降低; 当供磷量大于22.5 mg/株时,生物量未发生显著变化,说明此时植株对氮磷钾为奢侈消耗;(3)闽楠苗木叶片氮磷钾的临界含量分别为16.04、1.36和21.93 g/kg,最适含量范围分别为16.04～27.45、1.36～3.01和21.93～36.40 g/kg。综合分析认为,对闽楠苗木的最适施磷量为22.5～30.0 mg/株。
Abstract
To determine the optimal phosphorus need of Phoebe bournei seedlings, a pot trial was conducted with fertilization at levels of 0,7.5,15,22.5,30,40,60,90 mg per seedling. And the growth characteristics and foliar nutrient status of Ph. bournei seedlings were measured. The results indicated that:(1)Height and total biomass of Ph. bournei seedlings displayed growth-stability, with the increase of phosphorus supply,the ground diameter firstly went up, then was stable, finally decreased.(2)The leaf N and P concentrations grew up, but K display accelerated then went down as the phosphorus addition increased. The total dry biomass did not significantly change when phosphorus was above 22.5 mg per plant. So it suggested that the N, P and K were luxury consumed.(3)The critical values of N, P and K in leaf of Phoebe bournei seedlings were 16.04, 1.36 and 21.93 g/kg, respectively,while their optimum concentration range were 16.04-27.45,1.36-3.01 and 21.93-36.40 g/kg,respectively. Therefore,the optimal phosphorus amount for Ph. bournei seedlings might be 22.5-30.0 mg per seedling.
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参考文献
[1] Taiz L,Zeiger E.Plant Physiology[M].4th ed. Sunderland:Sinauer Associates Inc,2006.
[2] Liu Y,Shi G,Mao L,et al.Direct and indirect influences of 8yr of nitrogen and phosphorus fertilization on Glomeromycota in an alpine meadow ecosystem[J]. New Phytologist,2012,194(2):523-535.
[3] 张亮,杨宇虹,李倩,等.自生固氮菌活化土壤无机磷研究[J].生态学报, 2013,33(7):2157-2164. Zhang L,Yang Y H,Li J,et al.Mobilization of inorganic phosphorus from soils by five azotobacters[J].Acta Ecologica Sinica,2013,33(7):2157-2164.
[4] 余海英,李廷轩,张树金,等.温室栽培条件下土壤无机磷组分的累积、迁移特征[J].中国农业科学, 2011, 44(5): 956-962. Yu H Y,Li T X,Zhang S J,et al. The accumulation and migration of inorganic phosphorus fractions in soils under greenhouse cultivation[J]. Scientia Agricultura Sinica,2011,44(5):956-962.
[5] Wu Z,Zeng B,Li R,et al.Physiological regulation of Cylindrospermopsis raciborskii(Nostocales, Cyanobacteria)in response to inorganic phosphorus limitation [J]. Harmful Algae, 2012,15:53-58.
[6] 吴征镒.中国植物志[M]. 北京:科学出版社,1999.
[7] 王东光,尹光天,邹文涛,等.氮素营养对闽楠幼苗生长及光合特性的影响[J].林业科学研究,2013, 26(1):70-75. Wang D G,Yin G T,Zou W T,et al. Effects of nitrogen loading on growth and photosynthetic characteristics of Phoebe bournei seedlings [J].Forest Research,2013,26(1):70-75.
[8] 郭盛磊,阎秀峰,白冰,等.落叶松幼苗光合特性对氮和磷缺乏的响应[J].应用生态学报,2005,16(4): 589-594. Guo S L,Yan X F,Bai B,et al. Responses of larch seedling’s photosynthetic characteristics to nitrogen and phosphorus deficiency[J]. Chinese Journal of Applied Ecology,2005,16(4):589-594
[9] 郭彦荣,陈芳清.木蓝和胡枝子对高磷胁迫的生理生态响应及其磷吸收利用特征[J].福建林业科技, 2011, 38(2): 50-55. Guo Y R,Chen F Q. Indigofera tinctoria and Lespedeza floribunda ecophysiological responses to high phosphorus stress and characteristics of phosphorus absorb and utilization[J].Jour of FuJian Foresty Sci and Tech,2011,38(2):50-55.
[10] Manter D K, Kavanagh K L, Rose C L. Growth response of Douglas-fir seedlings to nitrogen fertilization: importance of RuBisCo activation state and respiration rates [J]. Tree Physiology, 2005, 25(8): 1015-1021.
[11] Ulrich A, Hills F. Principles and Practices of Plant Analysis [M]. Madison:Soil Science Society of America Inc, 1967.
[12] 王忠. 植物生理学 [M]. 北京: 中国农业出版社, 2002.
[13] Liu F, Yang W, Wang Z, et al. Plant size effects on the relationships among specific leaf area, leaf nutrient content, and photosynthetic capacity in tropical woody species [J]. Acta Oecologica, 2010, 36(2): 149-159.
[14] Quinones A, Soler E, Legaz F. Determination of foliar sampling conditions and standard leaf nutrient levels to assess mineral status of loquat tree [J]. Journal of Plant Nutrition, 2013, 36(2): 284-298.
[15] Adriaenssens S. Dry deposition and canopy exchange for temperate tree species under high nitrogen deposition [D]. Ghent: Ghent University, 2012.
[16] 董合忠,唐薇,李振怀,等.棉花缺钾引起的形态和生理异常[J].西北植物学报, 2005, 25(3): 615-624. Dong H Z,Tang W,Li Z H,et al.Morphological and physiological disorders of cotton resulting from potassium deficiency[J].Acta Bot Boreal-Occident Sin,2005,25(3):615-624.
[17] Rene W, Cote B, Camire C, et al. Development and application of CVA, DRIS, and CND norms for three hybrids of Populus maximowiczii planted in southern quebec [J]. Journal of Plant Nutrition, 2013, 36(1): 118-142.
[18] 陈琳,曾杰,徐大平,等.氮素营养对西南桦幼苗生长及叶片养分状况的影响[J].林业科学,2010,46(5): 35-40. Chen L,Zeng J,Xu D P,et al.Effects of exponential notrogen loading on growth and foliar nutrient status of Betula alnoides seedling[J].Scientia Silvae,2010,46(5):35-40.
[19] 黄益宗,冯宗炜,李志先,等.尾叶桉叶片氮磷钾钙镁硼元素营养诊断指标[J].生态学报,2002,22(8): 1254-1259. Hang Y Z,Fen Z W,Li Z X,et al.Diagnosis of foliar nutrient(N,P,K,Ca,Mg,B)of young Eucalyptus urophylla trees[J].Acta Ecologica Sinica,2002,22(8):1254-1259
[20] Salifu K F, Jacobs D F. Characterizing fertility targets and multi-element interactions in nursery culture of Quercus rubra seedlings [J]. Annals of Forest Science, 2006, 63(3): 231-237.
[21] 贾瑞丰.红厚壳苗期缺素和施肥试验的研究 [D].北京:中国林业科学研究院, 2011. Jia R F. Study on nutrient deficiency and fertilization of Calophyllum inophyllum L. seedlings[D]. Beijing: Chinese Academy of Forestry, 2011.
[22] 陈东阳. 闽楠人工林与天然林生长特点比较 [J]. 福建林业科技, 2012, 39(3):24-28. Chen D Y. Contrast of growth characteristics of Phoebe bournei artificial forest and natural forest[J]. Jour of Fujian Foresty Sci and Tech,2012,39(3):24-28.
基金
收稿日期:2013-05-06 修回日期:2013-12-18
基金项目:中国林科院基本科研业务费专项资金项目(CAFYBB2011005-8); “十二五”国家科技支撑计划(2012BAD01B04); 广东省林业科技创新项目(2010KJCX002-01)
第一作者:王东光,硕士生。*通信作者:尹光天,研究员。E-mail:yinguangtian@126.com。
引文格式:王东光,尹光天,杨锦昌,等. 磷肥对闽楠苗木生长及叶片氮磷钾浓度的影响[J]. 南京林业大学学报:自然科学版,2014,38(3):40-44.
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