• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2014 Fiscal Year Final Research Report

Inverse estimation of irrigation and nitrogen input by using plant growth model considering soil water and nitrogen formation

Research Project

  • PDF
Project/Area Number 24780228
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionIbaraki University

Principal Investigator

YOSHIDA KOSHI  茨城大学, 農学部, 准教授 (20420226)

Project Period (FY) 2012-04-01 – 2015-03-31
Keywords灌漑 / 作物生長 / 地下水
Outline of Final Research Achievements

In this study, column experiment was conducted to evaluate nitrogen transformation in soil with different water treatment condition.
Then, water and nitrogen load estimation model was also developed. Developed model was applied to two different type basin. One is Citarum river basin in Indonesia which have high input agriculture and high irrigated paddy ratio. Another is Namgum river basin in Laos which have low input agriculture and low irrigated paddy ratio.
Accuracy of water balance and rice yield were both improved by combining ground water model to plant growth model. Because ground water level affect to soil moisture and nitrogen formation in root zone soil.

Free Research Field

農業土木学

URL: 

Published: 2016-06-03  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi