均匀化育苗研究平台的设计与试验

标准苗的培育是机械嫁接过程的关键技术之一。为解决日光温室内植物幼苗向光弯曲的问题,且为探究不同LED光质对幼苗外观特征的影响,设计并研制了均匀化育苗研究平台。该研究平台由4个不同光质的培养小室组成,可根据幼苗生长期的不同,调节光源距离幼苗的高度,并利用机器视觉实时检测幼苗外观特征。以"北农亮砧"嫁接砧木为研究对象,在不同光照条件下进行了验证试验。试验结果表明:在不同光照条件下均可培育出长势均匀的幼苗,株高标准差小于7mm,茎粗标准差小于0.3mm,可用于培育外观特征一致的嫁接用幼苗;系统可实现对单株幼苗的外观特征无损检测,操作简单。

Design and Experiment of Research Platform for Uniform Seedlings

Cultivation of standard seedlings is one of the key technologies in the process of mechanical grafting. A uniform seedling research platform was developed to solve the problem of bend seedlings in solar greenhouse, and study the influence of different LED lights to the external features of seedlings. It consists of 4 cultivated rooms with LED device adjusted to apply different growing periods and enables real time detection of seedling appearance characteristics by ma-chine vision. By cultivating rootstock ( Beinongliangzhen) under different LED lights in the seedling box, seedlings grew evenly under regular light with plant height standard deviation less than 7 mm and thick stems standard deviation less than 0. 3 mm. These results indicate that this seedling box can foster seedling graft stocks with consistent appearance charac-teristics and the system may realize nondestructive testing of signal seedling’ s appearance characteristics. The operation is simple.