Selenium-enriched bio-organic fertilizer special for winter jujubes and preparation method and application method thereof

Abstract

The invention belongs to the field of agricultural fertilizer and particularly relates to selenium-enriched bio-organic fertilizer special for winter jujubes and a preparation method and application method thereof. The selenium-enriched bio-organic fertilizer for winter jujubes is composed of decomposed chicken manure, a microbial combined bacterium liquid and a sodium selenite solution in a mass-to-volume ratio of 100: 10-20: 15-20. Through one-step application of the bio-organic fertilizer before germination, the winter jujube selenium content is in a range of 40-50 micro-grams per kilogramand satisfies the requirements on the selenium content of fruits in the food selenium limiting content hygienic standards (GB13105-1991). Through use of the microbial combined bacterium liquid specialfor winter jujubes, the selenium-enriched bio-organic fertilizer has strong specificity, significantly increases the yield and quality of winter jujubes and ensures sustainable and healthy development of production of good-quality and selenium-enriched winter jujubes.

Description

technical field [0001] The invention belongs to the field of agricultural fertilizers, and in particular relates to a special selenium-enriched bio-organic fertilizer for winter dates and a preparation and application method thereof. Background technique [0002] Dongzao is a high-quality fresh jujube variety unique to my country, which is favored by people because of its rich nutrition and good taste. Through the application of exogenous selenium, the fruit is enriched in selenium, and then absorbed by the human body through the food chain, it can significantly improve the human body's immunity and achieve the purpose of anti-cancer and anti-aging. Due to the narrow range of human body's demand for selenium, excessive intake may lead to poisoning, and the health effect of selenium cannot be exerted if the amount is too small. Therefore, the selenium content of fruits should be strictly controlled in the production process of selenium-enriched winter jujube. [0003] In the...

AI Technical Summary

Problems solved by technology

Soil application of selenium can be combined with fertilization, which is more convenient for application. However, selenium is easily fixed by the soil, and its mobility becomes poor. Only a part of selenium can be absorbed into the tree through the root system and then transported to the fruit. Therefore, multiple applications are generally required.

The amount of selenium applied to the soil is not easy to control. Excessive amount of selenium will cause damage to the tree body, mainly manifested as dead leaves, fallen leaves, and fruit drop. Toxic effect on human body

And if the amount of application is too small, the purpose of selenium enrichment of winter jujube will not be achieved.

If the addition of sodium selenite is reduced during the production of bio-organic fertilizers, and then applied multiple times during the growth period of winter jujube, although the damage of selenium to the tree body and fruit can be avoided, multiple applications will cause excessive organic fertilizer. It is easy to lose the balance of soil nutrients, and multiple applications increase the input of manpower and material resources

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