Soilless cultivation method capable of reducing nitrate of lettuce leaves
The technology of soilless cultivation and nitrate is applied in the field of soilless cultivation for reducing nitrate of lettuce leaves, can solve the problem of high nitrate content in lettuce, and achieves the effects of simple operation, high economic benefit and enhanced root activity.
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Embodiment 1
[0085] The steps of the soilless cultivation method for reducing lettuce leaf nitrate are as follows:
[0086] 1. Seed soaking and germination
[0087] 1) Soak lettuce seeds in warm water at 55°C for 15 minutes, stirring constantly;
[0088] 2) Wrap the seeds with clean wet gauze and germinate them in an incubator at 28°C for about 1 day. When 80-90% of the seeds open and sprout, sow them in plastic nutrition bowls, and sow 1-2 seeds in each bowl.
[0089] 3) The operation of cherry radish seeds is the same as that of lettuce seeds. The difference is that the cherry radish seeds need to be soaked in clear water for 6-8 hours at 10-30°C to allow the seeds to fully absorb water.
[0090] 2. Seedling cultivation in artificial climate chamber
[0091] 1) Put the plastic nutrient bowl in which the seeds have been sown into an artificial climate box to grow seedlings. During the day, the temperature is controlled at 26°C and the light level is 5, at night the temperature is contr...
Embodiment 2
[0117] The steps of the soilless cultivation method for reducing lettuce leaf nitrate are as follows:
[0118] 1. Soaking seeds and germination
[0119] 1) Soak lettuce seeds in warm water at 55°C for 15 minutes, stirring constantly;
[0120] 2) Wrap the seeds with clean wet gauze and germinate them in an incubator at 28°C for about 1 day. When 80-90% of the seeds open and sprout, sow them in plastic nutrition bowls, and sow 1-2 seeds in each bowl.
[0121] 3) The operation of pea seeds is the same as that of lettuce seeds. The difference is that pea seeds need to be soaked in water at 10-30°C for 20-24 hours and the operation should be performed 15±1 days later to ensure that the two seedlings are transplanted at the same time.
[0122] 2. Seedling cultivation in artificial climate chamber
[0123] 1) Put the plastic nutrient bowl in which the seeds have been sown into an artificial climate box to grow seedlings. During the day, the temperature is controlled at 26°C and th...
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