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Growth Control of Plants by Changing the Spectral Distribution of Optical Radiant Environment

通过改变光辐射环境的光谱分布控制植物的生长

基本信息

批准号：
05556046
负责人：
AIGA Ichiro
金额：
$ 7.55万
依托单位：
Osaka Prefecture University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1995
项目状态：
已结题

项目摘要

This study had started after the success of our former project concerning the growth control of plants by additional far-red (FR) irradiation and 4-band fluorescent lamp for plant growth which has more FR irradiation than normal fluorescent lamp. Our aim in this research was as follows :(I) To get an efficient plant growth control method by modifying the spectral characteristics of 4-band fluorescent lamp.(2) Development of covering materials for greenhouses to control plant growth by changing the spectral distribution of daylight.(3) High speed measurements of spectral characteristics concerning optical radiant environments for plant growth.The results are as follows :(I) For 4-band fluorescent lamp, the rise of color temperature (diminish red (R) irradiation) gave an efficient change in R/FR ratio, not only in simulation but also in the cultivation test. Along to these conclusions, 4-band fluorescent lamp had been commercially on sale from Mastushita Electric Industrial Co., Ltd.(2) Using special dyestuffs which discriminately intercept R of FR irradiation, plastic covering materials to change R/FR ratio of natural radiation were developed. In the growth cabinets of greenhouses of these materials, many kinds of plants were found to be controlled effectively by the covering materials.(3) High speed measurements of optical radiation is necessary to develop the artificial lighting sources or covering materials. We improved an multichannel spectroradiometer about cosine correction and calibration system in the viewpoint of the measurement of optical radiant environments for plant growth. High speed measurement (within 100oms-2000ms) can be achieved in this system.

本研究是在我们的前一个项目成功后开始的，该项目是关于通过额外的远红（FR）照射和用于植物生长的4波段荧光灯来控制植物生长的，该4波段荧光灯比普通荧光灯具有更多的FR照射。本研究的主要目的如下：（1）通过改变四波段荧光灯的光谱特性，得到一种有效的植物生长控制方法。(2)开发温室覆盖材料，通过改变日光的光谱分布来控制植物生长。(3)对植物生长光辐射环境的光谱特性进行了高速测量，结果表明：（1）对于四波段荧光灯，色温的升高（减弱红光（R）照射），不仅在模拟中，而且在栽培试验中，都能有效地改变R/FR比值。沿着这些结论，4波段荧光灯已经销售Mastushita Electric Industrial Co.公司(2)利用特殊染料对FR辐射的R有选择性的阻断作用，研制出改变天然辐射R/FR比值的塑料覆盖材料。在这些材料的温室生长柜中，发现许多种植物被覆盖材料有效地控制。(3)光辐射的高速测量对于开发人工光源或覆盖材料是必要的。从测量植物生长光辐射环境的角度出发，对多通道光谱辐射计的余弦校正和定标系统进行了改进。该系统可实现100 ms-2000 ms的高速测量。