Effects of continuous lighting and time of initiation of treatments on the flowering time and growth of everbearing strawberry nursery plants in a closed plant factory.
Effects of continuous lighting and time of initiation of treatments on the flowering time and growth of everbearing strawberry nursery plants in a closed plant factory.
复制标题
封闭植物工厂中连续照明和开始处理时间对常年草莓苗圃开花时间和生长的影响。
DOI：
10.2525/shita.25.77
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
T. Kudo
中科院分区：
文献类型：
--
作者：
H. Yoshida;S. Hikosaka;E. Goto;H. Takasuna;T. Kudo
为降低草莓封闭工厂化栽培的初植成本和缩短栽培周期（以降低运营成本），研究了光照时间和处理开始时间对四年生草莓（Fragaria×ananassa Duch.）'HS 138'）苗圃植物。在13 mol m-2 d-1的日光照积分（DLI）下，所有处理均采用蓝色荧光灯作为光源。进行如下三种处理：从苗圃植物从微繁殖系统移植到水培系统后21天开始的16小时光照期（B16）和连续光照（B24），以及从移植后5天开始的连续光照处理（连续光照处理的开始时间比B24处理的开始时间早16天[EB 24]）。当所有处理下的植物显示开花时（光照期处理开始后71天），终止实验。B24和EB 24处理的植株比B16处理的植株提前约20天开花。B24（移栽后21 d）和EB 24（移栽后5 d）在光照期开始时的单株叶面积分别约为50和10 cm 2。这些结果表明，EB 24处理不能促进开花的原因之一可能是因为从幼年期向生殖期过渡所需的植物生长（叶面积）和年龄不足。在实验结束时，B16和B24处理之间的总干重没有显著差异。在连续光照下生长的植物中没有观察到生理障碍。如果植物可以在相同的DLI条件下生长，那么连续照明可以将封闭植物工厂中照明系统的初始成本降低到16小时光照期成本的三分之二。因此，与16 h光照条件下的四年生草莓栽培相比，连续光照条件下的四年生草莓栽培不仅可以降低运行成本，而且可以降低初始成本。
To reduce initial costs and shorten the cultivation period (to reduce running costs) of the cultivation of strawberries in a closed plant factory,we investigated the effects of light period and time of initiation of treatments on the flowering and growth of the everbearing strawberry (Fragaria×ananassa Duch. ‘HS138’) nursery plants. We used blue fluorescent lamps as the light source under 13 mol m-2 d-1 of daily light integral (DLI) in all treatments. Three treatments were performed as follows: 16-h light period (B16) and continuous lighting (B24) from 21 days after the transplanting of nursery plants from a micropropagation system to a hydroponic culture system,and continuous lighting treatment from 5 days after transplanting (the time of initiation of continuous lighting treatment was 16 days earlier than that of the B24 treatment [EB24]). The experiment was terminated when all the plants under the treatments showed flowering (71 days after the initiation of the light period treatments). The plants in both B24 and EB24 treatments flowered about 20 days earlier than those in the B16 treatment. The leaf area per plant at the initiation of the light period treatment in B24 (21 days after transplanting) and EB24 (5 days after transplanting) was about 50 and 10 cm2,respectively. These results indicated that one of the reasons why the EB24 treatment did not promote flowering was probably because of insufficient plant growth (leaf area) and age required for the transition from juvenile phase to reproductive phase. The total dry weight at the end of the experiment did not differ significantly between the B16 and B24 treatments. No physiological disorder was observed in the plants grown under continuous lighting. If plants can grow under the same DLI condition,then continuous lighting can reduce the initial cost of a lighting system in the closed plant factory to two-thirds of the cost for the 16-h light period. Therefore,cultivation of the everbearing strawberry under continuous lighting can reduce not only the running cost but also the initial cost,in comparison with the cultivation of the everbearing strawberry under a 16-h light period.