脱硫石膏改良龟裂碱土对枸杞根际土壤理化性质及根系生长的影响
Effect of Amelioration of Takyr Solonetzs with FGDG on Rhizosphere Soil Properties and Root Growth of Lycium barbarum
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Abstract: In this study, the rhizosphere soil properties of Takyr Solonetzs ameliorated with FGDG, and its effect on root growth of Lycium barbarum were studied. The results indicated that with increasing applications of FGDG, the contents of Na+, K+, Mg2+, Cl-, and HCO3- in rhizosphere soil decreased gradually with the ratio of 51.9%, 16.7%, 42.7%, 44.7% and 28.2%, respectively, while the contents of Ca2+ and SO42- showed an increasing trend and increased by 96.9% and 80.4% compared with those of the CK. As the content of exchangeable Na+ decreased with the increasing application of FGDG, the exchangeable sodium percentage (ESP) and soil pH values decreased from 32.2% and 10.5 to 18.1% and 7.82, respectively and thus the soil physical properties improved. However, the lowest total salt content (2.91 g·kg-1) was found in T2 (2.5 t/(667m2)), and similarly, the highest values of taproot length (44.78 cm), root surface area(179.97 cm2) and root dry weight (17.53 g) were also found in T2, which suggested that applications of FGDG were not always positively correlated with soil reclamation, and excessive amount of FGDG would inhibit root’s growth. Overall, application of FGDG is effective in ameliorating Takyr Solonetzs, but high amount of FGDG would result in excess salts against root growth and subsequently influence production.
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Key words:
- FGDG
- / Takyr Solonetzs
- / soil salt
- / Lycium barbarum
- / root system
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[1] 殷允相.龟裂碱土的形成、性质及改良途径[J].土壤通报,1985(5):206-208 [2] 李跃进,乌力更,芦永兴,等.燃煤烟气脱硫副产物改良碱化土壤田间试验研究[J].华北农学报,2004,19(S1):10-15 [3] Sakai Y,Matsumoto S,Sadakata M.Alkali soil reclamation with flue gas desulfurization gypsum in China and assessment of metal content in corn grains[J].Soil and Sediment Contam,2004,13:65-80 [4] 孙 权.农业资源与环境质量分析方法[M].银川:宁夏人民出版社,2004 [5] Clark R B,Ritchey K D,Baligar V C.Benefits and constraints for use of FGD products on agricultural land[J].Fuel,2001,80:821-828 [6] Oster J D,Frenkel H.The chemistry of the reclamation of sodic soil with gypsum and lime[J].Soil Sci Soc America,1980,44:41-45 [7] Chen L,Dick W A, Nelson S.Flue gas desulfurization by-products additions to acid soil: alfalfa productivity and environmental quality[J]. Environ Pollution,2001,114:161-168 [8] 蓝佩玲,廖新荣,李淑仪,等.燃煤烟气脱硫副产物在酸性土上的农用价值与利用原理[J].生态环境,2007,16(4):1135-1138 [9] Oster J D.Gypsum usage in irrigated agriculture:a review[J].Fert Res,1982,3:73-89 [10] Sakai Y,Matsumoto S,Nitta Y,et al.Alkali soil reclamation in China using gypsum produced in flue gas desulfurization process: a case study[J].J Global Environ Eng,2002,8:55-66 [11] 刘阳春,何文寿,何进智,等.盐碱地改良利用研究进展[J].农业科学研究,2007,28 (2):68-71 [12] 王金满,杨培岭,张建国,等.脱硫石膏改良碱化土壤过程中的向日葵苗期盐响应研究[J].农业工程学报,2005,21 (9):33-37 [13] 李焕珍,徐玉佩,杨伟奇,等.脱硫石膏改良强度苏打盐渍土效果的研究[J].生态学杂志,1999,18(1):25-29 [14] 张俊华,孙兆军,贾科利,等.燃煤烟气脱硫废弃物及专用改良剂改良龟裂碱土的效果[J].西北农业学报,2009,18(5):208-212 [15] 徐胜光,李淑仪,廖新荣,等.花生施用燃煤烟气脱硫副产物研究初报[J].土壤与环境,2001,10(1):23-26 [16] 刘建军,陈海滨,田呈明,等.秦岭火地塘林区主要树种根际微生态系统土壤性状研究[J].土壤侵蚀与水土保持学报,1998,4(3):52-56 [17] 李学垣.土壤化学[M].北京:高等教育出版社,2001 -
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