Page 168 - Plan GI

ผ-6

ตารางผนวก ก-1 (5) ระดับความเหมาะสมของคาพิสัยของคุณภาพที่ดินสำหรับ (ลิ้นจี่นครพนม)

LAND-USE REQUIREMENT FACTOR RATING
LAND QUALITY Diagnostic factor Unit S1 S2 S3 N
TEMPERATURE (t) Mean temp. in c 17-24 25-27 28-32 >32
growing period 17-14 13-10 <10
MOISTURE AVAILABILITY (m) Ann. rainfall mm. 1200-1800 1800-2000 1000-1300 >2000
1200-1400 <1000

Water mm.

in growing period
OXYGEN AVAILABILITY (o) Soil drainage class 4,5,6 3 1,2
NUTRIENT AVAILABILITY (s) N (total) %
P ppm
K ppm
Organic matter %

Nutrient status class VH,H M,L
NUTRIENT RETENTION (n) C.E.C. ดินลาง meq/100g >15 5-15 <5
B.S. ดินลาง % >35 <35
ROOTING CONDITIONS (r) Effective soil cm. >150 100-150 50-100 <50
Gravel % <15 15-40 40-80 >80
Root penetration class 1,2 3 4
FLOOD HAZARD (f) Frequency yrs./time 10yrs/1 6-9yrs/1 3-5yrs/1
EXCESS OF SALTS (x) EC. of saturation mmho/cm. <2 2-4 4-8 >8
SOIL TOXICITIES (Z) Depth of jarosite cm. >150 100-150 50-100 <50

Reaction pH 6.1-7.3 7.4-7.8 7.8-8.4 >8.4
5.1-6.0 4.5-5.0 <4.5
SOIL WORKABILITY (k) Workability class class 1,2 3 4
POTENTIAL FOR Slope class ABC D E >E
MECHANIZATION (w) Rockout crop class 1 2,3 4 5
Stoniness class 1 2 3 4
EROSION HAZARD (e) Slope class ABC D E >E

Soil loss ton/rai/yrs <2 2-4 4-12 >12
Note :- Day lenght - day neutal
Growing period (moisture) –
Soil texture requirement of crips – scl,sicl,cl,loamy soil
Others –