Production of vegetable transplants in artificial controlled environment.

在人工控制环境下生产蔬菜移植物。

• 批准号: 07456015
• 负责人: ITO Tadashi
• 金额: $ 5.06万
• 依托单位: CHIBA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07456015/
• 关键词: Transplant Production; Plant Factory; Plug Seedling; Low-temperature Storage; Acclimation; 種子処理

Some appropriate storage methods are required as a countermeasure against unexpected delays of planting operations which can be caused by weather conditions. In this research, the methods for storage of vegetable plug-seedling were investigated. For lettuce plug seedlings, the low-temperature (2-5ﾟC) storage method was recommended. In this method we used thin PE bag to wrapped plug tray and no lightning. The stored seedlings at 2ﾟC elongated their plant heights and the leaf color faded gradually after they were put in storages, while no seedling died during the storage period even in 30 days storage. Actually, the lettuce seedling could stored over 3 to 4 weeks practically. The practical storage period could be extended by the enriching CO_2 conc.in the storage bag (CA storage technique). Further studies with other vegetable plug seedling is necessary for growers.Effects of different dark periods on the growth and production efficiency of vegetable seedlings in plant factory were also investigated. When dark period was shortened, the growth rate of lettuce seedling were greatly increased. Although the running cost for plant factory was not decrease, increasing growth rate compressed the cost of redemption for the factory and of course the total production cost for plug seedling.For the present, when the dark period was shorter than 6 hours the growth of tomato and cucumber seedling were abnormal. For some kind of physiological disorder appeared, the use of this technique with tomato and cucumber was not in practice. Further research work concern with this phenomenon was expected.

需要一些适当的储存方法，以防止因天气条件而导致的种植作业意外延误。对蔬菜苗木的贮藏方法进行了研究。对于生菜插头苗，建议采用低温（2-5℃）贮藏方法。该方法采用薄PE袋包裹插头托盘，无雷击。2‰贮藏后幼苗株高升高，叶片颜色逐渐褪色，30 d内未见幼苗死亡。实际上，生菜幼苗的贮藏时间一般在3 ~ 4周以上。富集CO_2可延长实际储存期。在储存袋（CA储存技术）。对其他蔬菜苗木进行进一步的研究是必要的。研究了不同暗期对植物工厂蔬菜幼苗生长和生产效率的影响。当暗期缩短时，生菜幼苗的生长速度大大提高。虽然植物工厂的运行成本没有降低，但生长速度的提高压缩了工厂的赎回成本，当然也压缩了插头苗的总生产成本。目前，当暗期小于6小时时，番茄和黄瓜幼苗生长异常。由于出现了一些生理障碍，该技术在番茄和黄瓜上的应用并未付诸实践。希望进一步开展有关这一现象的研究工作。