Soilless culture method improving content of organic selenium of eggplants
A technology of soilless cultivation and soilless cultivation substrate, which is applied in the field of soilless cultivation to increase the content of organic selenium in eggplant, can solve the problems of long process of obtaining biological selenium, increased fertilizer cost, and high price, and achieves the goal of improving resistance to diseases and insect pests capacity, improved health, and improved economic performance
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Embodiment 1
[0025] A kind of soilless culture method that improves eggplant organic selenium content, comprises the following steps:
[0026] (1) Preparation of soilless culture medium: 300 parts of crop straws were crushed to a length of 2 cm, mixed evenly with 120 parts of animal urine, 400 parts of industrial and agricultural by-products, and 0.3 parts of selenium dioxide to obtain a fermentation base material. The material is fermented at 28°C, and the material is turned over every 12 hours. After 21 days, when red nano-selenium appears in the fermentation bottom material, the fermentation is ended to obtain decomposed organic matter.
[0027] Mix 600 parts of decomposed organic matter and machine-made sand evenly to obtain a soilless culture substrate containing nano-selenium; the particle size of the machine-made sand is 1cm;
[0028] (2) Seedling selection: select robust eggplant seedlings with a height of 6 cm, soak the roots of eggplant seedlings with 0.3% potassium permang...
Embodiment 2
[0032] A kind of soilless culture method that improves eggplant organic selenium content, comprises the following steps:
[0033] (1) Preparation of soilless culture medium: 350 parts of crop straws were crushed to a length of 1 cm, mixed evenly with 100 parts of animal urine, 350 parts of industrial and agricultural by-products, and 0.1 part of selenium dioxide to obtain a fermentation base material. The material is fermented at 30°C, and the material is turned over every 12 hours. After 14 days, when red nano-selenium appears in the fermentation bottom material, the fermentation is ended to obtain decomposed organic matter.
[0034] Mix well the decomposed organic matter and 1000 parts of machine-made sand to obtain a soilless cultivation substrate containing nano-selenium; the particle size of the machine-made sand is 2cm;
[0035] (2) Seedling selection: select healthy eggplant seedlings with a height of 10 cm, soak the roots of eggplant seedlings with 0.6% potassium...
Embodiment 3
[0039] A kind of soilless culture method that improves eggplant organic selenium content, comprises the following steps:
[0040](1) Preparation of soilless culture medium: crush 400 parts of crop straws to a length of 0.5 cm, mix them with 150 parts of animal urine, 500 parts of industrial and agricultural by-products, and 0.4 parts of selenium dioxide to obtain a fermentation base material. The material is fermented at 32°C, and the material is turned over every 12 hours. After 20 days, when red nano-selenium appears in the fermentation bottom material, the fermentation is ended to obtain decomposed organic matter.
[0041] Mix the decomposed organic matter and 800 parts of machine-made sand evenly to obtain a soilless culture substrate containing nano-selenium; the particle size of the machine-made sand is 1.5cm;
[0042] (2) Seedling selection: select robust eggplant seedlings with a height of 8 cm, soak the roots of eggplant seedlings with 0.5% potassium permanganate s...
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