Production technology of selenium-rich garlic

Garlic is a favorite food for people, it has many beneficial physiological effects on the human body, often eat garlic, can improve human immunity and prevent a variety of diseases. These physiological effects of garlic are related to the fact that it contains more selenium. Therefore, how to further improve the selenium content of garlic is of great significance not only to improve the therapeutic value of garlic, but also to increase the added value of garlic, increase the export of garlic and increase farmers' income. This paper introduces the production method of selenium-rich garlic to the majority of farmers for your reference.

Available selenium content in soil. The level of soil available selenium content reflects the level of soil selenium supply capacity, and it has a significant correlation with soil total selenium content, soil parent material, soil texture and soil PH. Generally speaking, with the increase of PH and soil texture from coarse to fine, the content of soil available selenium increased. The average content of soil available selenium in the main garlic producing areas of our province is 9.5 μ g / kg, and the supply of selenium in more than half of the soil is relatively low. therefore, it is very necessary to take appropriate measures to supplement the level of soil selenium supply for the production of selenium-rich garlic.

Commonly used selenium fertilizer. Selenium fertilizers commonly used in production are sodium selenite and sodium selenite, which can be purchased in chemical stores or chemical reagent stores.

The usage of selenium. The commonly used selenium application methods for producing selenium-rich garlic are foliar spraying, soil selenium application and seed soaking, which are introduced below.

Spray. One month before harvest, sodium selenate was mixed into a concentration of 100mg / kg, 5 grams of pure selenium per mu was applied and evenly sprayed on the leaves of garlic, the yield of garlic could be increased by about 10%, and the total selenium content of garlic increased from 0.072 mg / kg to 15 mg / kg. Selenium is obviously enriched.

Selenium was applied to the soil. Before sowing garlic, applying 13 grams of sodium selenate per mu, combined with other base fertilizers, evenly applied in the sowing ditch can generally increase the yield of garlic by about 15%, and the total selenium content of garlic can be increased to 12 mg / kg, which can obviously increase the yield and enrich selenium.

Soak the seeds. Soak the seeds with 100 mg / kg sodium selenate solution for 12 hours before sowing. The yield of garlic is generally increased by 10%, and the total selenium content of garlic is increased to 3 mg / kg.

Points for attention. The use of selenium should be controlled accurately, too much will have a toxic effect, and too little will not play the role of enriching selenium; spraying and soil application must be uniform; spray should be used before 9 am and after 5 pm on a sunny day, and should be sprayed after rain after spraying.