A kind of method for cultivating sweet potato seedlings with seedling breeding hotbed

Abstract

A method for cultivating sweet potato seedlings with a seedling-raising hotbed. The invention adopts the technology of converting light energy and electric energy to heat energy, and integrates temperature control technology, equipment and an intercommunicating grid thermal cycle system into sweet potato seedlings, effectively solving the problem of sweet potato seedling cultivation. The demand for temperature in different stages of seedling cultivation improves the adaptability to low-temperature and low-light weather; compared with traditional heating methods such as the fire path heating method and the brewing heat heating method, the temperature rises faster, the temperature rises reliably, the temperature of the whole bed is uniform, and the temperature difference is small. The temperature can be adjusted in time during the seedling raising stage, the operation is simple, energy-saving and labor-saving, and the cost is reduced; instead of the thermal cycle path in which the heat can only gradually penetrate from the bed to the potato layer in the traditional plastic shed seedling cultivation, the bed surface and the intercommunicating grid air guide groove are used The hot air in the internal circulation heats both the upward side of the seed potato and the downward side of the shady side of the seed potato, changing the air flow and temperature around the shady side of the seed potato, promoting the differentiation of adventitious buds on the shady side, and increasing the emergence of seedlings.

Description

technical field [0001] The invention relates to a method for growing sweet potato seedlings, in particular to a method for cultivating sweet potato seedlings in a seedling raising hotbed. Background technique [0002] Sweet potato seedling cultivation is the primary link in sweet potato production. Only when seedlings are raised at the right time can we ensure timely and early planting and prolong the growth time of sweet potatoes as much as possible; avoid "spring potato planting in summer" and "summer potato planting in autumn" to lay the foundation for high yield. my country's sweet potato production areas are spread all over the north and south, with different natural conditions, seedling raising methods and seedbed styles, which can be basically divided into four categories: 1. Open-field use of local natural conditions does not require special equipment and management. Such as ground furrows (yang furrows), small high ridges, etc. 2. Heating type According to local c...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of using coal or wood to heat in the traditional heating-type seedling cultivation, which is time-consuming and labor-intensive, the temperature difference of the bed surface is large, and the temperature is controlled by the size of the fire. , the control is inaccurate; heat-brewing seedlings mainly use the heat generated by plant stalks, fresh livestock manure, fallen leaves, etc. Although it saves energy and is practical and effective, it has poor adaptability to adverse environments (rainy weather with little sunshine), artificial temperature cannot be accurately controlled, hot air can only penetrate downward from the surface soil layer of the bed, the temperature of the seed potato layer rises slowly, and the potato layer, To solve the problems of large temperature difference between the lower two sides, a method for cultivating sweet potato seedlings with a seedling breeding hotbed is provided. The present invention adopts the technology of converting light energy and electric energy into heat energy, and integrates temperature control technology, equipment and intercommunicating grid heat circulation system into sweet potato In seedling cultivation, it effectively solves the temperature requirements of different stages of sweet potato seedling cultivation, and improves the adaptability to low-temperature and low-light weather; compared with traditional heating methods such as the fire path heating method and the brewing heating method, the temperature rises faster, the temperature rises reliably, and the temperature of the whole bed Even, the temperature difference is small, and the temperature can be adjusted in time at different seedling stages. The surface and the hot air circulating in the intercommunicating grid-style air guide groove heat the positive side of the seed potato upwards and the shady side downwards at the same time, changing the air flow and temperature around the shady side of the seed potato, promoting the differentiation of adventitious buds on the shady side, and improving emergence quantity

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