Modeling for establishing wheat producing system to quickly adapt to the commodity treaty changes

2017 Fiscal Year Final Research Report

• Project/Area Number: 25450020
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Crop production science
• Research Institution: The University of Tokyo
• Principal Investigator: OKADA Kensuke 東京大学, 大学院農学生命科学研究科(農学部), 教授 (80391431)
• Research Collaborator: TAKAHASHI Taro 東京大学, 大学院農学生命科学研究科, 特任研究員 (20540876)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Keywords: 作物モデル / APSIM / 意思決定支援システム / 小麦 / 子実タンパク質含量

Outline of Final Research Achievements

The self-sufficiency of wheat in Japan is ca. 10%, and it is imperative to prepare the optimized production system which can quickly adapt to any changes of the free-trade treaties with the countries from which wheat is imported. Therefore, to develop the optimized wheat production system, we aimed at applying crop growth model for wheat production system which has not been tried in Japan so far.
A series of field experiments with different nitrogen application patterns and sowing dates were tried for five seasons at Nishitokyo City in Tokyo. And the parameter improvement (calibration) and validation of the APSIM crop model were conducted and the practical level of precision was confirmed. Then scenario analysis of a number of nitrogen application schemes were conducted in Kanto area and Hokkaido. As a result, the possibility of attaining higher yield and profitability under the higher nitrogen application levels than the current recommendation was demonstrated.

Free Research Field

作物学