播种深度和土壤水分对黄花补血草种子萌发的影响

摘要/Abstract

摘要：

采集来自腾格里沙漠的黄花补血草种子，分别设置7个水分梯度（3.0%, 5.0%, 8.0%, 10.0%, 15.0%,18.0%,20%) 和6个播种深度（0、0.5、1.0、1.5、2.0、2.5 cm），进行黑暗（10～15 ℃）和光照(20～25 ℃)处理，研究水分、埋藏深度和温度对黄花补血草种子萌发和出苗的影响。结果表明：黄花补血草种子吸涨速率很快，在6 h种子吸水达到饱和；在土壤水分为3.0%～10.0%时，种子萌发率较高，当土壤水分达到20%时，萌发受到抑制；种子埋藏越深，萌发率越低，土壤水分太低或者太高，都不利于种子萌发。黄花补血草种子萌发和幼苗生长的最佳条件是：白天温度在25 ℃，夜间温度在15 ℃，土壤水分为10.0%，埋藏深度为0.5 cm时种子萌发率和出苗率最高。

关键词: 黄花补血草, 土壤水分, 沙埋深度, 种子萌发

Abstract:

Effects of burying depth, soil moisture and temperature on seedling establishment of Limonium aureum (L) Hill were studied. The seeds were collected from the Tengger Desert, the experiment was carried out under treatments of seven water grades, i.e. 3.0%, 5.0%, 8.0%, 10.0%, 15.0%, 18.0%, 20%, six burying depths at 0, 0.5, 1.0, 1.5, 2.0, 2.5 cm, and two temperature conditions in nighttime (10~15 ℃)and daytime (20~25 ℃). The imbibition of the L.aureum seeds was fast, with the speed of absorbing water reached the maximum in 1 hour, and the seeds became saturated in 6 hours. The percentage of seedling emergence was higher with soil moisture content from 3.0% to 10.0%, and at relatively shallower burying depth. Seedling emergence was checked and recorded everyday, moisture was added every 24 hours. The experiment was terminated after 21 days when the seedling emergence became almost steady. In the experiment, no seedlings emerged from seeds location at the depth of 2.5 cm. The deeper the seeds were placed in soil, the lower and slower were their emergences. Too much or insufficient moisture, too deep of burial depth reduced the percentage of seedlings emergences, which reflected the adaptation of the plant to the local climate and environment. Considering the habitat conditions, the optimal environment of seedling emergence is: temperature at 25 ℃ (daytime)/15 ℃ (nighttime), soil moisture of 10.0%, and the burial depth within 0.5 cm.

Key words: Limonium aureum (L.) Hill, burial depth, soil moisture, seedling emergence

中图分类号:

Q945.34

高天鹏;王春燕;张勇;高海宁;徐世健;安黎哲;王爱勤. 播种深度和土壤水分对黄花补血草种子萌发的影响[J]. 中国沙漠, 2009, 29(3): 529-535.

GAO Tian-peng;WANG Chun-yan;ZHANG Yong;GAO Hai-ning;XU Shi-jian;AN Li-zhe;WANG Ai-qin. Effects of Burying Depth and Soil Moisture on Seedling Emergence of Limonium aureum (L.) Hill[J]. JOURNAL OF DESERT RESEARCH, 2009, 29(3): 529-535.

参考文献

[1]Gutterman Y.Seed Germination in desert plants[M].Berlin,Heidelberg,New York:Springer,1993.
[2]Went F W.The effects of rain and temperature on plant distribution in the desert.Proceedings of the International Symposium on Desert Research[C].Research Council of Israel Special Publication,1953,2:230－240.
[3]Su Y G,Li X R,Jia R L,et al.Effeccts of sand-buring on seed germination and seedling emergence of six psammophytes species[J].Journal of Desert Research,2007,27(6):968－971 (in Chinese with English abstract).
[4]Maun M A,Lapierre J.Effects of burial of sand on seed germination and seedling emergence of four dune species[J].American Journal of Botany,1986,73:450－455.
[5]Maun M A.Adaptations of plants to burial in coastal sand dunes[J].Canadian Journal of Botany,1996,74:1322－1330.
[6]Vincent E M,Cavers P B.The effects of wetting and drying on the subsequent germination of Rumex crispus[J].Canadian Journal of Botany,1978,56:2207－2217.
[7]Gao T P,Zhang Y,Jin L,et al.Advances on threatened plants Cistaceae[J].Journal of Desert Research,2006,26(2):312－316.(in Chinese with English abstract).
[8]Li D L,Wang J H,Li A D,et al.Salt tolerance of 3 ceratoides pps varities in germination period[J].Journal of Desert Research,2006,26(6):1009－1014 (in Chinese with English abstract).
[9]Huang Z Y,Gutterman Y.Artemisia monosperma achene germination in sand: effects of sand depth,sand/water content,cyanobacterial sand crust and temperature[J].Journal of Arid Environments,1998,38:27－43.
[10]Huang Z Y,Gutterman Y,Hu Z H,et al.Seed germination in Artemisia sphaerocephala Ⅱ.The influence of environmental factors[J].Acta Phytoecologica Sinica,2001 25(2):240－246 (in Chinese with English abstract).
[11]Chen N L,Ma G J,Zhang Y X,et al.Responses of seed germination and seedling growth of muskmelon to NaCl stress[J].Journal of Desert Research,2006,26(5):814－819.(in Chinese with English abstract).
[12]Ren J,Tao L,Liu X M.Effect of sand burial depth on seed germination and seedling emergence of Calligonum L.species[J].Journal of Arid Environments,2002,53:603－611.
[13]Wang X Y,Yi J.The study on germination conditions and physiological characteristics of Ceratoides seeds[J].Acta Agrestia Sinica,2003,11(2):95－102 (in Chinese with English abstract).
[14]Gutterman Y.Survival Strategies of Annual Desert Plants[M].Adaptations of desert organism.Berlin,Heidelberg,New York,Springer,2002:348.
[15]Noe G B,Zedler J B.Different effects of four abiotic factors on the seedling emergence of salt marsh annuals[J].American Journal of Botany,2000,87:1679－1692.
[16]Wang Z L,Wang G,Liu X M.Germination strategy of the temperate sandy desert annual chenopod Agriophylium squarrosum[J].Journal of Arid Environments,1998,40:69－76.
[17]Chen H,Maun,M A.Effects of sand burial depth on seed germination and seedling emergence of Cirsium pitcheri[J].Plant Ecology,1999,140:53－60.
[18]Harper J L,Obeid M.Influence of seed size and depth and sowing on the establishment and growth of varieties of fiber and oils seed flax[J].Crop Science,1967,7:527－532.
[19]Yanful M,Maun M A.Effects of burial of seeds and seedlings from different seed sizes in the emergence and growth of Strophostyles helvola[J].Canadian Journal of Botany,1996,74:1322－1330.
[20]Benvenuti S,Macchia M,Miele S.Light,temperature and burial depth effects on Rumex obtussifolius seed germination and emergence.Weed Research,2001,41:177－186.
[21]Zhang Z B.Effect of burial and environmental factors on seedling recruitment of Quercus liaotungensis Koidz[J].Acta Ecologica Sinica,2001,21:374－384 (in Chinese with English abstract).
[22]Vlesshouwers L M.Modeling the effect of temperature,soil penetration resistance,burial depth and seed weight on pre-emergence growth of weeds[J].Annals of Botany,1997,79:553－563.
[23]Meidan E.The effects of soil water potential on seed germination of four winter annuals in the Negev Desert highlands Israel[J].Journal of Arid Environments,1990,19:77－83.
[24]Zhang J,Maun M A.Sand burial effects on seed germination,seedling emergence and establishment of Panicum virgatum Holarct[J].Ecology,1990,13:56－61.
[25]Keren A,Evenari M.Some ecological aspects of distribution and germination of Pancratium maritimum L[J].Israel Journal of Plant Sciences,1974,23:202－215.
[26]Liu Y X.Flora in Desertis Deipublicae Populorum Sinarum[M].Tomus Ⅱ.Beijing:Science Press,1990(in Chinese).
[27]Zhao R N.Resources of Chinese traditional and herbal drugs in Gansu,Vol.1[M].Lanzhou:Science and Technology Press of Gansu,2005:267 (in Chinese).
[28]Luo G Y,Tang Z H.Distribution and development of Limonium species in Gansu Province,China[J].Journal of Special Economic Animals and Plants,2001,9(30):29-30(in Chinese).
[29]Xing H.Bee plants Limonium sienense inhabited in salina in Shandong Province during summer and autuam[J].Journal of Bee,2000,6:28(in Chinese).
[30]Li C L,Li A D.The cultivation of wild flowering and ornamental plants[J].Chinese Wild Plant Resources,2003,22(1):351－354.
[31]Li F Q.The technology of the tissue culture of Limonium aureum[J].Journal of Desert Research,1995,15(2):198－200 (in Chinese with English abstrat).
[32]Zhang Y,Xue L G,Gao T P,et al.Research advance on seed germination of desert plants[J].Journal of Desert Research,2005,25(1):106－112 (in Chinese with English abstract).
[33]Hadas A，Russo D.Water uptake by seeds as affected by water stress,capillary conductivity,and seed-soil water contact[J].I.Experimental study.Agronomy Journal,1974a (66):643－647.
[34]Hadas A,Russo D.Water uptake by seeds as affected by water stress,capillary conductivity,and seed-soil water contact.Ⅱ.Analysis of experimental data[J].Agronomy Journal,1974(66):647－652.
[35]Nie C L,Zheng Y R.Effects of water supply and sand burial on seed germination and seedling emergence of four dominant psammophytes in the Ordos plateau[J].Acta Phytoecologica Sinica,2005,29(1):32－41(in Chinese).