Blueberry selenium-rich leaf fertilizer, preparation method and application method

Abstract

The invention provides blueberry selenium-rich leaf fertilizer, a preparation method and an application method. The blueberry selenium-rich leaf fertilizer, 100% in total, is prepared from, by weight, 1.0-8.0% of one or combinations of urea and ammonium sulfate, 1.0-10.0% of at least one or combinations of ammonium polyphosphate, monoammonium phosphate and diammonium phosphate, 5.0-15.0% of one or combinations of potassium sulphate and monopotassium phosphate, 1.0-10.0% of trace elements, 1.0-1.5% of sodium selenite, 1.0-10.0% of fulvic acid, 0.5-5% of sugar alcohol substances, 0.5-1.0% of surface activated agents and the balance water. The application method includes the steps of spraying the fertilizer in the blueberry primary flowering period and spraying the fertilizer in the fruit expanding period before blueberry picking. The selenium-rich leaf fertilizer is developed for the characteristic that blueberry crops need the fertilizer; the selenium-rich leaf fertilizer is high in specificity and can promote blueberry growth and increase the selenium content, anthocyanin content and soluble protein content in blueberries.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a foliar fertilizer for producing selenium-enriched blueberries, and also relates to a preparation method and an application method of the fertilizer. Background technique [0002] Selenium was discovered and named by Swedish chemist Berlius in 1817. As an essential trace element for the human body, selenium has the functions of scavenging free radicals in the body, anti-membrane lipid peroxidation, anti-aging, and improving the body's immunity. Selenium deficiency can cause various diseases in humans and animals. More than 1 billion people in the world are in a state of selenium deficiency, and various diseases in the human body are related to selenium deficiency. Two-thirds of our country is in the selenium deficient zone, resulting in insufficient selenium nutrition in the dietary structure. The selenium intake of adults in my country is 26.63 μg / d, which only meets the minimum dietary requir...

AI Technical Summary

Problems solved by technology

First of all, many foliar fertilizer products have single nutritional elements, which are only suitable for alleviating plant deficiency, and have poor effects on improving yield and quality; second, the proportion of nutrient elements is unscientific, and it is easy to cause crop nutritional disorders after application; third, , the spreading degree and penetration of the fertilizer solution on the leaf surface are low, the absorption effect of the leaves is poor, and the mobility of nutrient elements in the plant is poor; fourth, the abuse of growth regulators and foliar additives affects the quality of the fruit; fifth, for the multi-component compound leaf No chelating agent is used in the flour fertilizer or the type of chelating agent used is inappropriate, which directly affects the absorption efficiency of nutrients, etc.

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