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“ ”Blue Gold: World Water Wars Barlow and Clarke


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Asano, T.1984PettygroveAsano - 84-1 wr






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ECw deci SiemensdS/m TDS ppmmg / L
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0.7 dS / m1 3 dS / m 3 dS / m

pH



Na SAR
CaMg

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1

ECW dS m-1 <0.7 TDS mg L-1 <450
0.7 3.0 >3.0 450 2,000 >2,000
(ECW (dS m-1) SAR
>0.7 0.7 0.2 <0.2 >1.2 1.2 0.3 <0.3 >1.9 1.9 0.5 <0.5 >2.9 2.9 1.3 <1.3
SAR = 0 3, ECW = SAR = 3 6, ECW = SAR = 6 12, ECW = SAR = 12 20, ECW = SAR = 20 40, ECW = >5.0 5.0 2.9 <2.9
(Na)
SAR <3 3 9 >9 meq L-1 <3 >3 —
mg L-1 <70 >70 — (Cl)
meq L-1 <2 2 10 >10 mg L-1 <70 70 355 > 355
meq L-1 <3 >3 mg L-1 <100 >100
(B) mg L-1 <1.0 1.0 2.0 >2.0
pH — 6.5 8.4 :
Ca + Mg
SARECw
“”SAR “SAR” “Adj. SAR” Adj. SAR
ECwSAR 1 SAR3 SAR9 SAR SAR

Cl

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B 1
pH 014pH
pH pH pH7pH7 pH7pH0 pH7pH14
pH 5.57.0 pH6.58.4 pH6.5-7 pH

SAR SAR
HCO3 meq/ L
RSCRSC
/meq/L
RSC = (HCO3 + CO3) - (Ca + Mg)
RSC 1.25 / RSC1.252.5 / RSC2.5/


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2
ECe ECe 3 dS /m ECe3 dS / m10 dS /m ECe10 dS / m

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2
(<3 dS/m) (3-6 dS/m) (6-10 dS/m) (>10 dS/m)
(Alkaligrass)
()
()


ECe 2.5 dS /m 1.2 dS /m ET10

LR =




ECw 1 dS/m5 dS/m
3dS/m

49 (45) 20111216 9




N-phuric
pH N -phuric

SAR

N-phuric

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. M. ALI HARIVANDI maharivandi@ ucdavis.edu
49 (45) 20111216 10
N-phuric