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Development of a model of absorption and metabolism of nutrients to support environmentally friendly hydroponics based on precision fertilizer management

基于精准施肥管理，开发养分吸收代谢模型，支持环保水培

基本信息

批准号：
21K05849
负责人：
佐合悠貴
金额：
$ 2.58万
依托单位：
Yamaguchi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

项目摘要

２年度目においては，養分吸収-代謝-蓄積モデルに基づいた葉菜類の量的管理栽培技術（課題1）の開発および養分吸収モデルに基づいた果菜類の環境保全型養液栽培技術の開発（課題2）を実施した。課題1では，人工光型植物工場における量的管理条件に対する地上部の代表的な環境条件である光環境の影響や，栽培中に環境が変わる温室への栽培適応可能性を窒素吸収・代謝・蓄積モデルを用いて検証した。その結果，低い光強度では窒素吸収速度および代謝速度ともに低く，過剰施肥となる過程が明らかとなり，量的管理における初期窒素施肥量は地上部の光条件に合わせる必要があることが示唆された。また，フィルムハウスで異なる初期窒素施肥量でフリルレタスを量的管理栽培したところ，収穫したい植物サイズに合わせて初期窒素施肥量と収穫日を決めることで量的管理栽培が可能であることが示唆された。課題2においては，異なる肥培管理法でナスを養液栽培し，養液の肥料濃度と収量を経時観測することで，新規肥培管理法の有効性を検証した。肥培管理法として，前年度までに構築したモデルにより求めた養分吸収量に基づいて肥培管理するモデル区，養液の肥料濃度測定から求めたみかけの吸収濃度に基づいて管理する補正区，追肥養液を山崎ナス処方とする対照区の3処理区を設けた。その結果，養液イオン濃度は，モデル区および補正区では各イオンの顕著な蓄積は見られなかったが，対照区では特定イオンの蓄積が見られた。ナスの収量は，3処理区とも50日間まで同程度であったが，それ以降はモデル区および補正区が対照区を上回った。これは，対照区のイオン組成が不安定化し，栽培後半に生育が停滞したことによるものと考えられる。以上より，養分吸収モデルに基づいた新規肥培管理法は，養液の肥料濃度を随時計測し調節する方法と同程度に肥料組成の長期安定化することが示唆された。

In the year 2, the cultivation techniques for the management of the number of different types of dishes (topic 1) will be introduced. The environmental protection liquid cultivation techniques for environmental protection, such as fruits and vegetables, will be introduced. Subject 1, the management conditions of artificial light-based plant factories have a negative impact on the environmental conditions represented by the above-ground environment. The possibility of cultivation in a greenhouse is affected by asphyxiating hormone absorption and storage capacity. The results showed that the absorption rate of asphyxiant in low light intensity was very low, and the process of fertilization was very low. The amount of asphyxiant in the early stage of the experiment showed that the above-ground light conditions were in line with the light conditions of the shoot. The management of the initial amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiate in the early stage, the management of the amount of asphyxiate in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiate in the early stage, the management of the amount of asphyxiate in the early stage, the management of the amount of asphyxiant in the early stage, the management of the amount of asphyxiate in the early stage, the management of Subject 2, the method of fertilizer management has some advantages, such as liquid cultivation, liquid fertilizer, and the new conventional fertilizer management method. In the previous year, the fertilizer management method was used to determine the absorption capacity of the fertilizer management system, the liquid fertilizer measurement method, the fertilizer management method, the fertilizer management area, the The results show that the temperature of the liquid is very high, and that of the normal area is different from that of the normal area. the results show that the temperature of the liquid is very low, the temperature of the area is very high, the temperature of the area is very high, and the temperature of the area is very high. Check the quantity, 3 days and 50 days in the same area, so as to reduce the temperature in the normal area, the normal area and the illuminated area in the last time. After cultivation, the growth was stagnant and the growth was stagnant in the first half of the cultivation. According to the above, the new conventional fertilizer management method is adopted, and the liquid fertilizer temperature is calculated at any time. The fertilizer composition is stabilized for a long time to the same extent.