Improvement of Root Environment in NFT

NFT根环境的改善

• 批准号: 63860034
• 负责人: OGURA Yukoh
• 金额: $ 5.18万
• 依托单位: Utsunomiya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63860034/
• 关键词: NFT; Strawberry; Flower bud initiation; Ascorbic acid; Nutrient concentration; Sweet potato; Arch rockwool; Storage root development; NFT栽培; 冷水処理; ヘキソ-ス; エチレン; 養液栽培; 野菜の富栄養化; NFTのベッド構造

1. Promotion of flower bud differentiation in strawberry plants grown under NFT systems has been recognized with flow cold nutrient solution through the channel. Experiments to develop this technique for commercial base were tried. Strawberry plants grew well under three layers of NFT channels at 30 cm spacing in height and flower initiations were promoted with either cold nutrient solution (10ﾟC) or well water (17ﾟC).2. With low concentration or lack of nitrogen in nutrient solution ascorbic acid content in the leaves of Brassica campestris L. had higher than that with normal nutrient solution although the yield of leaves was vice versa. Generally ascorbic acid content in the leaves of Brassica campestris L. decreased with aging. There was no favorable effects to improve the glucose and ascorbic acid content in Brassica campestris L. and Spinacia cleracea L. plants grown under several kinds of film have different selection of spectrum.3. Arch rockwool as medium in channel of NFT improved the flow of nutrient solution if plant developed well the root systems. Sweet potato(Ipomoea batatas L.) produced the storage roots in air space under lower arc.

1.在NFT系统下生长的草莓植株中，已经认识到通过通道流动冷营养液促进花芽分化。为将该技术用于商业基地进行了试验。草莓植株在3层30 cm高的NFT通道中生长良好，冷营养液（10 ℃）和井水（17 ℃）均能促进开花.在营养液中氮素浓度低或缺乏时，白菜叶片中抗坏血酸的含量随营养液中氮素浓度的增加而降低。比普通营养液处理的产量高，但叶片产量却相反。白菜叶片中的抗坏血酸含量一般为0.001 ~ 0.001 mg/L。随着年龄的增长而减少。对提高白菜中葡萄糖和抗坏血酸含量没有明显的效果。和菠菜Spinacia cleracea L.不同膜下生长的植物对光谱的选择不同.当植物根系发育良好时，拱状岩棉作为NFT通道的基质，可促进营养液的流动。甘薯（Ipomoea batatas L.）在下弧下的气隙中产生贮根。

项目成果

向井隆司,小倉祐幸: "NFT夜間冷水処理装置によるイチゴの花成促進技術について" 生物環境調節. 26. 1-7 (1988)

Takashi Mukai、Yuyuki Ogura：“使用NFT夜间冷水处理设备促进草莓开花的技术”生物环境法规。26. 1-7 (1988)。

藤重宣昭: 園芸学会誌.

Nobuaki Fujishige：园艺学会杂志。

Mukai Takashi and Yukoh Ogura: "Development of a Technique for Promoting Flower-Bud Differentiation of Strawberry Plants by Using Night Cooling NFT System." Environmental Control in Biology, 26:1-7, 1988.

Mukai Takashi 和 Yukoh Ogura：“利用夜间冷却 NFT 系统开发促进草莓植物花芽分化的技术”。

河又虎好 他: 生物環境調節.

Torayoshi Kawamata 等：生物环境调节。

小倉祐幸 他: 生物環境調節.

Yuyuki Ogura 等：生物环境调节。