مقایسه اثرات کاه و کلش بر کیفیت فیزیکی دو خاک ریز و درشت بافت از دشت مغان، شمال غرب ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار گروه علوم و مهندسی خاک، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی

2 دانشجوی سابق کارشناسی ارشد گروه علوم و مهندسی خاک، دانشکده کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی

چکیده

در این مطالعه، اثرات کاه و کلش گندم بر شاخص­های کیفیت فیزیکی دو خاک لوم شنی و لوم رسی مقایسه گردید. آزمایش فاکتوریل (فاکتور اول کاه و کلش در 5 سطح صفر، 1، 2، 3 و 5 درصد وزنی و فاکتور دوم دو کلاس بافتی) در قالب طرح پایه بلوک­های کاملاً تصادفی در 4 تکرار اجرا گردید. ستون­های خاک در دمای C° 4± 22 و رطوبت 50 تا 75 درصد ظرفیت مزرعه به مدت 6 ماه قرار گرفتند سپس ویژگی­های خاک در پایان ماه ششم اندازه­گیری شد. پارامترهای α و n مدل ون­گنوختن با نرم افزار RETC تعیین، توزیع اندازه منافذ خاک و شاخص دکستر (Sp) از روی داده­های منحنی رطوبتی محاسبه گردید. نتایج نشان داد استفاده از کاه و کلش در مقادیر 1 تا 5 درصد به­ترتیب در دو خاک لوم شنی و لوم رسی، میانگین وزنی قطر خاکدانه­ها (MWD) را 5/87 تا 3/358 و 87/27 تا 92/104 درصد، هدایت هیدرولیکی اشباع را 94/22 تا41/195 و 80 تا 86/162 درصد، رطوبت قابل استفاده را 27/16 تا 7/105 و 94/10 تا 35/96 درصد، پارامتر nرا 5/4 تا 8/21 و 74/1 تا 14/8 درصد و Spرا 61/32 تا 91/73 و 62/5 تا 2/38 درصد نسبت به شاهد افزایش و پارامتر αرا 67/12 تا 15/59 و 25 تا 45 درصد نسبت به شاهد کاهش داد. شدت تأثیر کاه و کلش در مقادیر مصرفی بر بهبود کیفیت فیزیکی خاک لوم شنی بیشتر از لوم رسی بود.

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of the Effects of Straw on Physical Quality of Two Fine and Coarse-Textured Soils from Moghan Plain, NorthWest of Iran

نویسندگان [English]

  • Shokrollah Asghari 1
  • Sakineh Salahshoor 2
1
2
چکیده [English]

In this study, the effects of wheat straw on physical quality indices of two sandy loam and clay loam soils were compared. Factorial experiment was conducted as a randomized block design at 4 replicates. The first factor was straw used rates at 5 levels including 0, 1, 2, 3 and 5 mass percent; the second factor was 2 soil textural classes. Soil columns were incubated at the temperature of 22±4 °C and moisture of 50 to 75 percent of field capacity for 6 months then soil properties measured at the end of sixth month. The α and n parameters of van Genuchten model using RETC software, pore size distribution and Dexter Sp value using soil moisture curve data were calculated. Application of straw at the rates of 1 to 5%, significantly increased mean weight diameter (MWD) of aggregates from 87.5 to 358.3 and 27.87 to 104.92%, saturated hydraulic conductivity from 22.94 to 195.41 and 80 to 162.58%, available water capacity (AWC) from 16.27 to 105.7 and 10.94 to 96.35%, n parameter from 4.5 to 21.8 and 1.74 to 8.14% and Sp from 32.61 to 73.91 and 5.62 to 38.2% and decreased α parameter from 12.67 to 59.15 and 25 to 45% in sandy loam and clay loam soils, respectively. Consequently, improving effects of straw at the used rates on the sandy loam soil was more observable than clay loam soil.

کلیدواژه‌ها [English]

  • Aggregate stability
  • Crop residue
  • Dexter Sp value
  • Pore size distribution
  • Soil texture
References
Asghari Sh., Abbasi F., and Neyshabouri M.R. 2011. Effects of soil conditions on physical quality and bromide transport properties in a sandy loam soil. Biosystems Engineering, 109: 90-97.
Asghari Sh., Ahmadnejad S., and KeivanBehjou F. 2016. Deforestation effects on soil quality and water retention curve parameters in eastern Ardabil, Iran. Eurasian Soil Science, 49 (3): 338–346.
Bauer A., and Black A.L. 1992. Organic carbon effects on available water capacity of three soil textural groups. Soil Science Society of America Journal, 56: 248-254.
Blake G.R., and Hartge K.H. 1986a. Bulk Density. In: Klute A. (ed.). Methods of Soil Analysis. Part 1. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 363-375.
Blake G.R., and Hartge K.H. 1986b. Particle density.In: Klute, A. (ed.). Methods of Soil Analysis. Part 1. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 377-381.
Danielson R.E., and Sutherland P.L. 1986. Porosity. In: Klute, A. (ed.). Methods of Soil Analysis. Part 1. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 443-461.
Dexter A.R., and Bird N.R.A. 2001. Methods for predicting the optimum and the range of soil water contents for tillage based on the water retention curve. Soil and Tillage Research, 57: 203- 212.
Dexter A.R. 2004. Soil physical quality, Part I: Theory, effects of soil texture, density, and organic matter, and effects on root growth. Geoderma, 120: 201-214.
Dexter A.R. and Czyz E.A. 2007.Applications of S-theory in the study of soil physical degradation and its consequences. Land Degradation Development, 18: 369–381.
Emami H., and Astaraei A.R. 2012. Effect of organic and inorganic amendments on parameters of water retention curve, bulk density and aggregate diameter of a saline-sodic soil. Journal of Agricultural Science and Technology, 14: 1625-1636.
Emami H., Neyshabouri M.R., and Shorafa M. 2012. Relationships between some soil quality indicators in different agricultural soils from Varamin, Iran. Journal of Agricultural Science and Technology, 14: 951-959.
Fathololomi S., and Asghari Sh. 2015. Effects of Ardabil municipal sewage sludge on some physical and hydraulic properties of a coarse-texture soil under wheat cultivation. Water and Soil Science, 24 (4): 169-183. (In Persian)
Foth H.D. 1984. Fundamental of Soil Science. John Wiley and Sons, INC. USA, 384p.
Gardner W.H. 1986. Water content. In: Klute A. (Eds.), Methods of Soil Analysis. Part 1. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 493-544.
Herencia J.F., Garcia-Galavis P.A., and Maqueda C. 2011. Long-term effect of organic and mineral fertilization on soil physical properties under greenhouse and outdoor management practices. Pedosphere, 21(4): 443–453.
Hillel D. 1998. Environmental Soil Physics. Academic Press. USA, 494p.
Kahlon M.S., Lal R., and Ann-Varughese M. 2013. Twenty two years of tillage and mulching impacts on soil physical characteristics and carbon sequestration in Central Ohio. Soil and Tillage Research, 126: 151–158.
Kemper A., and Rosenau R. 1986. Aggregate stability and size distribution. In׃ Klute A. (Eds.), Methods of Soil Analysis.Part 1.2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 425-437.
Klute A. 1986. Methods of Soil Analysis. Part 1. Physical and Mineralogical Methods. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, 1188p.
Klute A., and Dirksen C. 1986. Hydraulic conductivity and diffusivity: Laboratory methods. In: Klute A. (Eds.). Methods of Soil Analysis. Part 1. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 687-734.
Li L., Chan K.Y, Niu Y., Li G., Oates A., Dexter A., and Huang G. 2011. Soil physical qualities in an OxicPaleustalf under different tillage and stubble management practices and application of S theory. Soil and Tillage Research, 113: 82–88.
Mulumba L.N., and Lal R. 2008. Mulching effect on selected soil physical properties. Soil and Tillage Research, 98: 106-111.
Mousavi S.F., Moazzeni M., Mostafazadeh-FardA., and Yazdani M.R.2012. Effects of rice straw incorporation on some physical characteristics of paddy soils. Journal of Agricultural Science and Technology, 14: 1173-1183.
Nelson D.W., and Sommers L.E. 1982. Total carbon, organic carbon and organic matter. In׃ Page A.L. (Eds.), Methods of Soil Analysis. Part 2. 2nd ed. Agronomy Monograph 9, ASA, Madison, WI, pp. 539-579.
Page A.L. (Eds.). 1985. Methods of Soil Analysis. Part 2, Chemical and Microbiological Methods, 2nd ed. Agronomy No. 9. American Society of Agronomy, Madison, WI, 1150p.
Sadeghian N., Neyshabouri M.R., Jafarzadeh A.A., and Tourchi M. 2007. Investigation the effects of three amendment on physical properties of soil surface layer. Iranian Journal of Agricultural Sciences, 37(2): 341-351. (In Persian)
Shirani H., Rizahbandi E., Dashti H., Mosaddeghi M.R., and Afyuni M. 2011. Effect of pistachio waste on some soil physical characteristics and compatibility of two soil types. Journal of Science and Technology of Agricultural and Natural Resources-Water and Soil Science, 15 (55): 85-98. (In Persian)
Soil Science Society of America (SSSA). 1997. Glossary of soil science terms. Soil Science Society of AmericaJourna. Madison, WI, 47p.
Silva G.L., Lima H.V., Campanha M.M., Gilkes R.J., and Oliveira T.S. 2011. Soil physical quality of Luvisols under agroforestry, natural vegetation and conventional crop management systems in the Brazilian semi-arid region. Geoderma, 167-168: 61–70.
Van Genuchten M.Th. 1980. A closed-from equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal, 44: 892-898.
Van Genuchten M.Th. Leij F.J., and Yates S.R. 1991. The RETC code for quantifying the hydraulic function of unsaturated soils. US Salinity Laboratory and USDA Agricultural Research Service, Riverside, California, 92501.
Warrick A.W. 2002. Soil Physics Companion. CRC Press, 389p.