Precautions for the use of hole plates
2023-11-06 15:45:11
1. The pore size of the hole disc. The number of holes in the seedling tray varies from 18 to 800 due to different hole diameters. It is more economical to cultivate small and medium-sized seedlings with hole trays of 128-288 holes; When cultivating potted flowers such as begonia and phoenixes, it is recommended to choose a hole tray with a larger hole diameter; For deep-rooted larkspur and some vegetable crops, it is advisable to choose a hole tray with deeper holes. Gerbera, cyclamen, etc. can first sprout in small hole seedling trays, and then transplant to large hole seedling trays for seedling growth.
2. The shape of the hole. There are mainly square and circular hole shapes, and the matrix contained in square holes is generally about 30% more than that in circular holes. The water distribution is also more uniform, and the root system of young seedlings is more fully developed.
3. The manufacturing material of the hole plate. There are mainly polystyrene foam film, which is commonly used for ornamental plant seedlings and vegetable seedlings.
4. The color of the hole plate. The color of the hole tray can affect the temperature at the root of the seedling. The white polystyrene foam membrane tray has good reflectivity and is often used for early seedling cultivation in summer and autumn to facilitate reflection of light and reduce the accumulation of heat at the roots of young seedlings. In winter and spring, choosing a black seedling tray is beneficial for the root system development of small seedlings due to its good light absorption.
5. Reuse of acupoint plates. Before reuse, the hole tray should be thoroughly cleaned and treated with special disinfectants such as quaternary ammonium salts to prevent the growth of root rot pathogens. For high-density polystyrene foam film discs that are not easily melted at high temperatures, steam disinfection can be considered, but they must be thoroughly dried before use. For thinner hole plates, the number of repetitions should not exceed 3 to prevent damage and leakage of water and matrix.
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