Lean tobacco floating seedling-raising method

Abstract

The invention discloses a lean tobacco floating seedling-raising method. During a tobacco floating seedling-raising process, the bottom of a seedling pool must be flat, water is added into the seedling pool before floating seedling-raising discs are arranged in the seedling pool to perform seedling raising, the depth of the water is 1.0-2.0 cm, the corresponding amount of floating seedling-raising nutriment liquid fertilizer is added into the seedling pool, and the concentration of nitrogen in water in the seedling pool is allowed to be 100 ppm-150 ppm; during the seedling-raising process, once water (nutrient solution) in the seedling pool is used up due to evaporation and absorption (in this time, the seeding substrate must keep wet and not dry), water with the depth of 1.0-2.0 cm and the corresponding amount of nutriment liquid fertilizer are instantly added into the seedling pool, and the concentration of nitrogen in water in the seedling pool is allowed to be 100 ppm-150 ppm, that is repeated till the seedling raising process is finished. The lean tobacco floating seedling-raising method further includes disinfection of the seedling-raising discs, substrate filling, sowing, seedling thinning, temperature and humidity management, leaf cutting and seedling training which are identical to that of the conventional tobacco floating seedling-raising methods. The lean tobacco floating seedling-raising method is lean and can save fertilizers and water, the cultivated tobacco seedlings can germinate and emerge in advance, the whole seedling growth period is shortened by more than 7 days, and the cultivated tobacco seedlings are health and strong and are developed in root systems.

Description

Technical field:

[0001] The invention belongs to the field of tobacco planting, and in particular relates to a method for raising lean tobacco seedlings by floating. Background technique:

[0002] Tobacco is a seedling and transplanting crop. At present, the tobacco industry is promoting modern tobacco agriculture. Tobacco seedlings are planted in factories, modern conjoined greenhouses are built, and seedling ponds are built. In the seedling ponds, 10cm deep water is stored and nutrient liquid fertilizer is added. There are shaped foam floating seedlings with substrates and seeds floating on it. Trays (shaped foam floating seedling trays can be reused for many years), seeds and tobacco seedlings absorb nutrients in the nursery pond water through the capillary action of the matrix for growth, and the seedling matrix is ​​prepared in a factory, the matrix is ​​sterilized, the temperature and humidity are controlled, and the leaves are cut to strengthen the seedlings , the to...

Examples

Embodiment 1

[0010] In the floating seedling cultivation of tobacco, the bottom level of the seedling pond should be ensured at first, and the seedling pond should be filled with 1.0 cm deep water before placing the floating seedling tray for seedling cultivation, and at the same time, a corresponding amount of nutrient liquid fertilizer for floating seedling cultivation should be added, so that the concentration of nitrogen in the water of the seedling pond is 100ppm, once the seedling pond dries up due to evaporation and absorption (nutrient solution) during the seedling raising process (at this time, the seedling raising substrate must still be kept moist and not dry), immediately add 1.0cm deep water and a corresponding amount of nutrient liquid fertilizer, so that The concentration of N in the seedling pond water was 100ppm, and this was repeated until the end of seedling cultivation. Disinfection of the remaining seedling trays, loading of substrates, sowing, thinning, temperature and...

Embodiment 2

[0012] In the floating seedling cultivation of tobacco, first ensure the bottom level of the seedling pond, add 2.0 cm deep water to the seedling pond before placing the floating seedling tray for seedling cultivation, and add a corresponding amount of floating seedling nutrient liquid fertilizer at the same time, so that the concentration of nitrogen in the water in the seedling pond is 150ppm, once the seedling pond dries up due to evaporation and absorption (nutrient solution) during the seedling raising process (at this time, the seedling raising substrate must still be kept moist and not dry), immediately add 2.0cm deep water and a corresponding amount of nutrient liquid fertilizer, so that The concentration of N in the seedling pond water is 150ppm, and so on, until the end of seedling cultivation. Disinfection of the remaining seedling trays, loading of substrates, sowing, thinning, temperature and humidity management, leaf cutting and hardening are the same as conventio...

Technical field:

[0001] The invention belongs to the field of tobacco planting, and in particular relates to a method for raising lean tobacco seedlings by floating. Background technique:

[0002] Tobacco is a seedling and transplanting crop. At present, the tobacco industry is promoting modern tobacco agriculture. Tobacco seedlings are planted in factories, modern conjoined greenhouses are built, and seedling ponds are built. In the seedling ponds, 10cm deep water is stored and nutrient liquid fertilizer is added. There are shaped foam floating seedlings with substrates and seeds floating on it. Trays (shaped foam floating seedling trays can be reused for many years), seeds and tobacco seedlings absorb nutrients in the nursery pond water through the capillary action of the matrix for growth, and the seedling matrix is ​​prepared in a factory, the matrix is ​​sterilized, the temperature and humidity are controlled, and the leaves are cut to strengthen the seedlings , the to...

Examples

Embodiment 1

[0010] In the floating seedling cultivation of tobacco, the bottom level of the seedling pond should be ensured at first, and the seedling pond should be filled with 1.0 cm deep water before placing the floating seedling tray for seedling cultivation, and at the same time, a corresponding amount of nutrient liquid fertilizer for floating seedling cultivation should be added, so that the concentration of nitrogen in the water of the seedling pond is 100ppm, once the seedling pond dries up due to evaporation and absorption (nutrient solution) during the seedling raising process (at this time, the seedling raising substrate must still be kept moist and not dry), immediately add 1.0cm deep water and a corresponding amount of nutrient liquid fertilizer, so that The concentration of N in the seedling pond water was 100ppm, and this was repeated until the end of seedling cultivation. Disinfection of the remaining seedling trays, loading of substrates, sowing, thinning, temperature and...

Embodiment 2

[0012] In the floating seedling cultivation of tobacco, first ensure the bottom level of the seedling pond, add 2.0 cm deep water to the seedling pond before placing the floating seedling tray for seedling cultivation, and add a corresponding amount of floating seedling nutrient liquid fertilizer at the same time, so that the concentration of nitrogen in the water in the seedling pond is 150ppm, once the seedling pond dries up due to evaporation and absorption (nutrient solution) during the seedling raising process (at this time, the seedling raising substrate must still be kept moist and not dry), immediately add 2.0cm deep water and a corresponding amount of nutrient liquid fertilizer, so that The concentration of N in the seedling pond water is 150ppm, and so on, until the end of seedling cultivation. Disinfection of the remaining seedling trays, loading of substrates, sowing, thinning, temperature and humidity management, leaf cutting and hardening are the same as conventio...