Rice yield in tropical regions & temperate regions
○ Respiratory losses
○ Net dry matter production as a balance between photo. & resp.
Y = S 〔 1.20 - 0.021 ( t - 21.5 )² 〕
Y : grain yield ( kg / 1000 m² )
S : solar radiation ( cal/cm² per day )
t : daily mean temperature(℃) in August and September
Y = 500〔 1.20 - 0.021 ( 21.5- 21.5 )² 〕=584.5 kg/1000m²(100%) temperate
Y = 500〔 1.20 - 0.021 ( 26.0- 21.5 )² 〕=387.4 kg/1000m²(66.3%) tropical
Y = 500〔 1.20 - 0.021 ( 28.0- 21.5 )² 〕=156.4 kg/1000m²(26.5%) tropical
Y = 500〔 1.20 - 0.021 ( 19.0- 21.5 )² 〕=534.4 kg/1000m²(90.7%) temperate
Rice yield in tropical regions.hwp
0.02MB
'Rice Production' 카테고리의 다른 글
| Wet-Bed Method (0) | 2010.01.31 |
|---|---|
| Raising seedlings/Practice of seed selection (0) | 2010.01.30 |
| Paddy Field Preparation (0) | 2010.01.29 |
| Classification of rice culture (0) | 2010.01.26 |
| Environmental conditions (0) | 2010.01.26 |