2.1 DSSAT 

DSSAT

IBSNAT (International 

Benchmark Sites Network for Agrotechnology 
Transfer)

100

15

 

71 

)



DSSAT

(growing degree days, GDD)

(base temperature)

1

GDDT

max

(

)

T

min

(

)

b

9(

2000)

GDD < 0

0

 

max

min

((

)/2

GDD

T

T

b





....................(1) 

DSSAT

DSSAT 

V4.0

(

)

(

)

(

)

(biomass)

67

DSSAT

(4.02

)

DSSAT 3.0

67

(

2000)

 

 

2.2 (WGEN)

 

(2003)

Pickering et al. (1988)

Richardson (1983)

(WGEN)

 

2.2.1 

 

(Pickering et al, 

1988)

2

T

i

i

j

T

j



j

j

T

i

T

i

1

(First order serial correlation 

coefficient)N

i

0~1



j

j

 

2

ij

j

i1

j

i

j

j

TT

(T

T)N

1







............(2)

 

2.2.2 

 

I

I-1

P(W|W)

I

I-1

P(W|D)

(0,1)

RN

RN