Soilless culture method improving content of organic selenium of okra

Abstract

The invention relates to a soilless culture method improving the content of organic selenium of okra. The method includes the operation steps that firstly, soilless culture media containing nano-selenium are prepared, then strong okra seedlings are selected, the roots of the okra seedlings are sterilized and then transplanted to customized grooves in a greenhouse, the customized grooves are filled with the soilless culture media containing the nano-selenium, pruning, disaster prevention, flower promoting and fruit retention and other management are carried out on the okra through a conventional method, fruits are picked after being mature, and the okra high in organic selenium content is obtained. According to the method, the soilless culture media containing the nano-selenium are used for culturing the okra, the yield of the okra and the content of the organic selenium in the fruits can be remarkably increased, economical benefits are good, nutritional value and health-care value of the okra are high, use of fertilizers and pesticides can be reduced, cost is low, the okra is environmentally friendly and free of public hazards, and the method is suitable for large-scale popularization.

Description

technical field

[0001] The invention relates to a vegetable soilless cultivation technique, in particular to a soilless cultivation method for increasing the organic selenium content of okra. Background technique

[0002] my country is facing severe challenges from population growth and land reduction. The population accounts for 1 / 4 of the world's total population, but its arable land area is only 1 / 7 of the world's total arable land area. According to statistics in 2000, the national per capita arable land is only 0.01 hm2, soilless cultivation can provide several times or even more than ten times the quantity of products than ordinary soil cultivation, and can use sandy beaches, saline-alkali and other barren lands to produce agricultural products, laying a solid foundation for the food safety guarantee system. my country is a country with very poor water quality resources, and is listed as one of the 13 water-poor countries in the world. The per capita water resources in ...

Examples

Embodiment 1

[0025] A kind of soilless cultivation method that improves okra 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 okra seedlings with a height of 6 cm, soak the roots of okra seedlings with 0.3% potassium permanganate so...

Embodiment 2

[0032] A kind of soilless cultivation method that improves okra 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 culture substrate containing nano-selenium; the particle size of the machine-made sand is 2cm;

[0035] (2) Seedling selection: select healthy okra seedlings with a height of 10 cm, soak the roots of okra seedlings with 0.6% potassium permanganat...

Embodiment 3

[0039] A kind of soilless culture method that improves okra 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 strong okra seedlings with a height of 8 cm, soak the roots of okra seedlings with 0.5% potassium permanganate solution ...

technical field

[0001] The invention relates to a vegetable soilless cultivation technique, in particular to a soilless cultivation method for increasing the organic selenium content of okra. Background technique

[0002] my country is facing severe challenges from population growth and land reduction. The population accounts for 1 / 4 of the world's total population, but its arable land area is only 1 / 7 of the world's total arable land area. According to statistics in 2000, the national per capita arable land is only 0.01 hm2, soilless cultivation can provide several times or even more than ten times the quantity of products than ordinary soil cultivation, and can use sandy beaches, saline-alkali and other barren lands to produce agricultural products, laying a solid foundation for the food safety guarantee system. my country is a country with very poor water quality resources, and is listed as one of the 13 water-poor countries in the world. The per capita water resources in ...

Examples

Embodiment 1

[0025] A kind of soilless cultivation method that improves okra 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 okra seedlings with a height of 6 cm, soak the roots of okra seedlings with 0.3% potassium permanganate so...

Embodiment 2

[0032] A kind of soilless cultivation method that improves okra 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 culture substrate containing nano-selenium; the particle size of the machine-made sand is 2cm;

[0035] (2) Seedling selection: select healthy okra seedlings with a height of 10 cm, soak the roots of okra seedlings with 0.6% potassium permanganat...

Embodiment 3

[0039] A kind of soilless culture method that improves okra 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 strong okra seedlings with a height of 8 cm, soak the roots of okra seedlings with 0.5% potassium permanganate solution ...