Proj
J-GLOBAL ID:200904041924105639  Research Project code:0250003131 Update date:Dec. 15, 2003

Elucidation of dynamics of nitric acid nitrogen in soil in open cultured vegetable field: (1) Elucidation of long-term dynamics of nitric acid nitrogen in soil

露地野菜畑における土壌中硝酸態窒素動態の解明 (1)土壌中の硝酸態窒素の長期的動態解明
Study period:1999 - 2002
Research overview:
Concentration of nitric acid type nitrogen in soil solution at deep layer of 3.75-4.00m or just top part of Joso clay layer, is less than 10ppm at field crop cultivated field, and it is shown that field crops are environment preservation crops. On the other hand, for vegetable field, there are field having nitric acid type nitrogen concentration of less than 10ppm, and having more than 30ppm. At vegetable cultivation, it is considered that concentration of nitric acid type nitrogen at lower layer is greatly changed by the nitrogen balance per field unit concerning to vegetable production and denitrification state at lower layer.
Keywords (4):
open cultured vegetable ,  nitric acid type nitrogen ,  underground permeation ,  nourishment
Project name: Establishment of nitrogen fertilizing method for stable production of major open cultured vegetables
Project Organization (1):
  • Chiba Prefectural Agriculture Research Center
Researcher representative of the project  (1):
  • 小野 敏通
Research program: Ordinary Research

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