Tobacco floating seedling substrate and preparation method thereof
A technology for floating seedling substrate and tobacco, which is applied in the fields of botanical equipment and methods, fertilizer mixtures, soilless cultivation, etc., can solve the problem of the adverse effects of carbonized straw species selection and the amount of carbonized straw used on tobacco seedling development, and the physical and chemical properties of the substrate are difficult to maintain uniformity. Stability, the degree of decay is not easy to control and other issues, to achieve the effect of promoting sustainable development, avoiding diseases, and solving insufficient disinfection
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[0027] Example 1: This experiment is divided into the invention group and the control group (see Table 1 for the composition of the floating seedling raising matrix in each group), and each treatment raises 2 trays of tobacco seedlings (480 plants). The special fertilizer for floating seedlings was applied at the time of sowing, 30 days after sowing, and 45 days after sowing, so that the nitrogen concentration in the nutrient solution reached 100 mg / kg, 100 mg / kg and 50 mg / kg. Tobacco seedlings in the small cross stage are inter-seedled to keep the entire tobacco seedlings uniform, and water is poured into the seedbed from time to time to keep the water level stable. Other management methods are the same. The temperature on the surface of the seedling tray is kept at 20 to 25°C, and the duration of days when the relative humidity is greater than 90% cannot exceed 3 days. The nutrient solution is applied during the cultivation process, and its mineral nutrient content is: N 20 ...
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