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From ORYZA2000 to ORYZA (v3): An improved simulation model for rice in drought and nitrogen-deficient environments

View Article: PubMed Central - PubMed

ABSTRACT

Improvements in ORYZA (v3) were identified and compared to ORYZA2000.

Soil carbon, nitrogen, and temperature dynamic modules were developed.

Algorithms for the effects of environmental stresses on rice growth were improved.

Case studies confirmed successful improvement of the model.

Case studies confirmed successful improvement of the model.

No MeSH data available.


Illustration of the coupling scheme of the water and the nitrogen uptake. Solid boxes represent state variables while the tied valves represent rate variables. The thick line arrows indicate the mass flow while the thin line arrows represent the information input for computing the state and rate variables.
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fig0025: Illustration of the coupling scheme of the water and the nitrogen uptake. Solid boxes represent state variables while the tied valves represent rate variables. The thick line arrows indicate the mass flow while the thin line arrows represent the information input for computing the state and rate variables.

Mentions: The versions of ORYZA2000 assumed that all mineral nitrogen in the soil is available as needed and that the actual nitrogen uptake is the lower value of the maximum uptake capability of a given cultivar and the total available soil mineral nitrogen. It also assumed that the soil moisture and the root distribution in the soil profile did not affect the nitrogen uptake. In ORYZA (v3), the nitrogen uptake is coupled with the water uptake (Fig. 5; Supplementary section 1.4.3).


From ORYZA2000 to ORYZA (v3): An improved simulation model for rice in drought and nitrogen-deficient environments
Illustration of the coupling scheme of the water and the nitrogen uptake. Solid boxes represent state variables while the tied valves represent rate variables. The thick line arrows indicate the mass flow while the thin line arrows represent the information input for computing the state and rate variables.
© Copyright Policy - CC BY
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5391805&req=5

fig0025: Illustration of the coupling scheme of the water and the nitrogen uptake. Solid boxes represent state variables while the tied valves represent rate variables. The thick line arrows indicate the mass flow while the thin line arrows represent the information input for computing the state and rate variables.
Mentions: The versions of ORYZA2000 assumed that all mineral nitrogen in the soil is available as needed and that the actual nitrogen uptake is the lower value of the maximum uptake capability of a given cultivar and the total available soil mineral nitrogen. It also assumed that the soil moisture and the root distribution in the soil profile did not affect the nitrogen uptake. In ORYZA (v3), the nitrogen uptake is coupled with the water uptake (Fig. 5; Supplementary section 1.4.3).

View Article: PubMed Central - PubMed

ABSTRACT

Improvements in ORYZA (v3) were identified and compared to ORYZA2000.

Soil carbon, nitrogen, and temperature dynamic modules were developed.

Algorithms for the effects of environmental stresses on rice growth were improved.

Case studies confirmed successful improvement of the model.

Case studies confirmed successful improvement of the model.

No MeSH data available.