LED光谱对西瓜苗生长的研究

LED Spectrum's Effects on the Growing Watermelon Plantlets

以光调控技术为基础的全封闭式植物工厂是提高西瓜苗培养效率及质量的最佳途径。为此,论证了以纯LED光进行西瓜苗育苗的可行性,并研究了不同红蓝光配比对西瓜幼苗生长的影响。结果显示:5∶1的红蓝光通比下,西瓜幼苗生长情况最好。根据蓝、红光对植物不同的影响,最佳的光照方式应为:幼苗生长早期适当提高蓝光比例,而生长后期多加红光;前期用较弱的光照,后期再用强光照。

The fully closed Planting Factory which Light controlling technique is its key technology is proved to be a suffi- cient way to provide both efficiency and high-quality to watermelon-plantlets cultivation. Here discussed the possibility of growing watermelon plantlets with pure LED lights, and furthermore the impacts of LED lights with different R/B ratios on the growth of watermelon plantlets. As a result, the best watermelon plantlets were gained with the R/B ratio of 5 ： 1. Thus, the best lighting solution would be： give the plantlets more blue lights at their early growing period, then raise the ratio of red lights.