Proj
J-GLOBAL ID:200904040997211210  Research Project code:0150003670 Update date:Oct. 16, 2009

Development of cutting down of chemical fertilizer (Evaluation of nutriment accumulated in soil and development of effective use technique of such nutriment): (1) Decision of standard amount of silicic acid applied to paddy field (2) Decision of standard amount of phosphoric acid applied to paddy field

化学肥料節減技術の開発(土壌蓄積養分の評価と有効利用技術の開発)(1)水田におけるケイ酸施用基準値の策定(2)水田におけるリン酸施用基準値の策定
Study period:1999 - 2002
Research field (1): Other
Research overview:
We clarify, evaluate, and utilize actual condition of phosphoric acid and silicic acid accumulated in soil for establishing appropriate use method of those substances. Through a development of new analysis method to elucidate silicic acid in rice, standard amount of silicic acid is to be decided. By elucidating relation between soil and amount of phosphoric acid included in rice, process of accumulated phosphoric acid which displays effectiveness, decision of standard amount of phosphoric acid in soil, and effectiveness of deoxidization of phosphoric acid, effective adaptation method of phosphoric acid for each local area is to be established.
Keywords (4):
chemical fertilizer ,  silicic acid ,  phosphoric acid ,  reduction
Research program: Ordinary Research

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