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The use of subsistence model for the cultivation of high-quality seedlings, through the investigation of seedling growth in various periods, physiological indicators and plant nutrient status to determine the nutritional requirements of high quality seedlings, compared to the traditional pattern of nutrient requirements for the integration of matrix fertilizer To lay the foundation for improved testing. The test water management was performed by spraying dry on the surface of the substrate and lightly pressing the surface of the substrate with the finger, and the finger-free water stains prevailed. The use of dry see wet as the management principle. Temperature and humidity control The use of temperature and humidity monitor, to control the temperature between 25 ~ 30 °C, humidity 60% ~ 80% prevail, combined with water curtain, shade net and timely ventilation for control.
Through the temperature and humidity monitor in the research greenhouse to control the temperature and humidity, using different cultivation modes for nursery, found that the dry matter accumulation of the petunia plug seedlings there are significant differences. For the traditional model, dry matter accumulation in the shoot was 100% for the first 10 days after emergence, and 700% for the first 10 days after seedling emergence. The dry matter accumulation amount for 20-30 days was 148% for the first 10 days. The dry matter accumulation amount was 30-40 days. 52% of the first 10 days. For the survival pattern, dry matter accumulation in the shoot was 100% in the first 10 days after emergence, and dry matter accumulation in 20-30 days was 256% in the first 10 days. Dry matter accumulation amount was 30-40 days. For the first 10d of 179%. At the same time, we also observed that within 10 days of emergence, the absolute dry matter accumulation of plants under the traditional model and the survival model was 0.0003 and 0.00176, respectively, and the difference was significant.
Application of Temperature and Humidity Monitor to Temperature, Room Temperature and Humidity Control in Plug Seedlings
There are many ways to raise seedlings. Among them, the application of plug seedlings with high production efficiency, good quality of seedlings, rapid transplanting and quick seeding, and easy operation are very common, especially in the cultivation of horticultural seedlings. The most important key factor in this technology is the reasonable supply of nutrients. For the time being, China is still technically lagging behind foreign countries. The main reason is that there is a significant gap between the fertilizer and matrix used in the domestic plug seedling technology and foreign countries, and it cannot effectively meet the nutrient requirements of plug seedlings. Therefore, it is necessary to conduct rigorous research and comparison in order to promote the progress and development of the technology. The application of the temperature and humidity monitor in research is mainly used to control the temperature and humidity and ensure the unification of test conditions.