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Water Culture on Ornamental Crops Using Eutrophic Water in the lake of Kojima

利用儿岛湖富营养化水培育观赏作物

基本信息

批准号：
08459018
负责人：
KAGEYAMA Yoshihiro
金额：
$ 4.16万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08459018/
关键词：
Water culture of ornamental crops continuous flowing culture system Eutrophic lake water 富栄養化湖水の利用

项目摘要

Eutrophic water in the lake of Kojima contained nutrient elements for the growth of crops, existing its at low concentration. In previous study, we cleared that the low concentration of nutrients in culture solution was able to grow normally many ornamental crops, if the solution supplied continuously to roots system in a water culture.In this study, we evaluated optimum species of horticultural crops for water culture using the eutrophic water by water culture system of continuous water flowing method. In other subject, we developed a floating culture system for bedding flowers getting about on the lake surface by solar energy.(1) In screening test evaluating optimum horticultural crops, several crops were ranked four grades as followed ; A (growing excellently) 4 species of bedding flowers, 3 species of cutting flowers and 1 specie of vegetable ; B (growing normally) 3 species of bedding flowers, 2 species of cutting flowers and 2 species of vegetables ; C (growing partial dead) : 2 species of bedding flowers and 2 species of cutting flowers ; D (not growing) : 7 species of bedding flowers and 5 species of cutting flowers.(2) Floating culture system "Moving flower bed" was consisted of styrene foam plate for planting crops, two solar cells, a screw and control device for moving direction. Bedding flowers were grown normally during three months by the system in the eutrophic water.

小岛湖富营养化水体中含有农作物生长所需的营养元素，以低浓度存在。在前期的研究中，我们发现在水培条件下，只要培养液中的低浓度营养物质能持续供给植物根系，就能使许多观赏作物正常生长，本研究采用连续流水法水培系统，对富营养化水体中的园艺作物进行了水培试验，以评价其最佳品种。另一方面，我们开发了一种利用太阳能在湖面上漂浮的花坛花卉漂浮栽培系统。(1)在评价最佳园艺作物的筛选试验中，将几种作物分为四个等级：A（生长良好）4种床上用品花、3种切花和1种蔬菜; B（生长正常）3种卧花，2种切花，2种蔬菜;（生长部分枯死）：2种卧花和2种切花; D（不生长）：7种卧花和5种切花。(2)“移动花坛”漂浮栽培系统由种植作物的苯乙烯泡沫板、两块太阳能电池、一个螺旋桨和移动方向控制装置组成。在富营养化水体中，该系统在三个月内正常生长。