Abstract:

Sprouting vegetables are nutritious and environment-friendly, which possess broad prospects for development. However, the promotion of sprouting vegetables has been impeded by the large workload and limited specialized equipment for production. To satisfy the demand of automatic management in sprouting vegetable cultivation, a combined ultrasonic device was designed. The device is composed of base plate, pre-germination system, cultivation system, lighting system and control system. Using the device, experiments were carried out on pea and radish sprouts cultivation. The results show that without manual management, the automatic control system could realize the automatic water supply for the pre-germination and cultivation system, as well as the automatic light supplement for the lighting system. Additionally, using ultrasonic atomization in the pre-germination and cultivation system could not only satisfy the water requirement of sprouts, but also coordinate the contradiction of water and air supply of roots, thus accelerating the growth of sprouts while reducing the frequency of rotten roots. The combination mode of the device is flexible, which allows users to select one or more cultivation systems for the combined use according to their requirements. In short, the device could realize automation in sprouting vegetable cultivation, and is of certain significance for the promotion of sprouting vegetables.

Key words: ultrasonic, cultivation device, sprouting vegetable, combined type, automatic, aerosol cultivation