email - دانشگاه تهران...micro irrigation design and management for trees, vines, and...

*

N.C.P.C.

CVEuUcN.C.P.C.

CVEuUcP.C.N.C.

*Email: nikbakht.jaefar@znu.ac.ir

bypass

P.C.N.C.

coefficient of variability

CV

CvSq

qa

n

qi

emission uniformity

Eu

Euqlq

qa

Eu

ASABE

Eu

ASABE

Uc

uniformity coefficient

Uc

uniformity coefficient

UcASABE

distributionuniformity

Dudistribution uniformity

qm

emitterdischarge-pressure relationship

qk

hx

x

x

x

x

N.C.

N.C.P.C.

CV

CVN.C.CV=13.1%

P.C.CV=10.7%

CV

CV

N.C.

CV

CVN.C.P.C.

CVP.C.

N.C.

CV

N.C.Eu

Eu

Eu

N.C.

EuN.C.

Eu

CV=4.9%

Eu

N.C.P.C.

Eu

Uc

N.C.P.C.

Uc

Uc

Uc

N.C.P.C.Du

Uc

Uc

DuP.C.N.C.

Du

Du=96%

Du

Du

kx

xN.C.

P.C.

xk

kx

xk

P.C.N.C.

N.C.

P.C.

P.C.LPHqaCV

UcN.C.LPHqaCV

UcP.C.

LPHqaCVUcN.C.

LPHqaCVUc

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Assessment of emission uniformity for micro-

irrigation design. Biosystems Engineering.

93(1): 89-97.

12. Bralts V.F. and Edwards D.M. (1986) Field

evaluation of drip irrigation sub-main units.

Transactions of the ASAE. 29(6): 1659-1664.

13. Burt C.M. and Styles W.S. (2007) Drip and

micro irrigation design and management for

trees, vines, and field crops- practice plus

theory. Irrigation Training and Research Center,

3rd Edition, California Polytechnic State

University (Cal Poly), USA. 396p.

14. Dutta D.P. (2008) Characterization of drip

emitters and computing distribution uniformity

in a drip irrigation system at low pressure under

uniform land slopes. M.Sc. Thesis, Texas A&M

University, USA. 123p.

15. Merriam J.L. and Keller J. (1978) Farm

irrigation system evaluation: A guide to

management. Utah State University, Logan,

Utah. 271p.

16. Ortega J.F., Tarjuelo J.M. and Juan J.A. (2002)

Evaluation of irrigation performance in

localized irrigation systems of semiarid regions

(Castilla-La Mancha, Spain). Agricultural

Engineering International: the Cigr Journal of

Scientific Research and Development. 4: 1-17.

17. Yildirim O. and Orta A.M. (1995) Evaluation of

some drip irrigation systems in Antalya Region.

Irrigation and Drainage Abstracts. 21(1): 51.