Selenium-rich fertilizer special for kiwi fruit and preparation method thereof

Abstract

The invention belongs to the field of fertilizers and especially relates to a selenium-rich fertilizer special for kiwi fruit and a preparation method thereof. The method comprises the following steps: adopting a selenium-rich nutrient solution for culturing cardamine hirsuta, mixing the cultured selenium-rich cardamine hirsute with humic acid, boric acid, calcium superphosphate, urea and potassium sulfate at ratio, and then co-heating and stirring, thereby acquiring the selenium-rich fertilizer special for kiwi fruit that is capable of promoting the growth and development of the plants, restoring soil pollution and supplying a large amount of organic selenium to the kiwi fruit. The selenium-rich fertilizer special for kiwi fruit, provided by the invention, can be applied for obviously increasing the selenium content, especially, organic selenium content of the kiwi fruit.

Description

technical field

[0001] The invention belongs to the field of fertilizers, in particular to a special selenium-enriched fertilizer for kiwi fruit and a preparation method thereof. Background technique

[0002] Selenium is a chemical element whose chemical symbol is Se. It is located in group VI A of the fourth period of the chemical element periodic table and is a non-metal. Selenium is an essential trace element for humans and animals. Selenium deficiency will seriously affect human health. In 1972, Roetueh confirmed that selenium is the active ingredient of glutathione peroxidase (GPX). Since then, selenium has been recognized as an essential trace element for life. Selenium is also an essential nutrient element for the growth of higher plants. According to research, 0.1-1.0 μg / g can promote the growth of rice, increase yield and increase the selenium content in grains. Selenium at 1.0 μg / g can significantly increase the root activity of rice seedlings and the activity of...

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