Special nutrient for grapes rich in organic selenium and application thereof

Abstract

The invention provides a special nutrient for grapes rich in organic selenium, which is prepared by evenly mixing nano selenium plant nutrient, organic phosphatic fertilizer and microbial fertilizer by weight ratio of 2-6:2-4:0.4-1. The invention also provides a method for producing grapes rich in organic selenium, comprising the following steps: in embryonic stage or flowering period of grapes, fertilizing the special nutrient for grapes rich in organic selenium according to an annular furrow application method with the total dosage of 45-150g of selenium per mu, namely, taking the root of the grape as the centre of a circle and furrowing, wherein, the furrow is 50-90 cm away from the root, the width of the furrow is 10-30cm and the depth is 10-20cm; fertilizing the special nutrient for grapes rich in organic selenium into furrows when the grapes are ripe; randomly checking the content of selenium of grape grains, and harvesting grapes with the content of selenium reaching 10-45 mu g / kg. The grape produced according to the method has higher security, and the selenium contained is easier to be absorbed and utilized by human body.

Description

technical field [0001] The invention relates to a special nutritional agent rich in organic selenium for grapes and a method for producing grapes rich in organic selenium by using the special nutritional agent rich in organic selenium for grapes. The related technology belongs to the technical field of selenium biological nutrition enhancement. Background technique [0002] Vitis vinifera is the fruit of grapes, a deciduous vine and one of the oldest plants in the world. There are many varieties of grapes, and there are thousands of them in the world, which can be generally divided into two categories: wine grapes and table grapes. The sugar content of grapes is as high as 10% to 30%, mainly glucose; it is rich in minerals calcium, potassium, phosphorus, iron and various vitamins B1, B2, B6, C and P, etc. amino acid. Grapes have many health functions, such as lowering the serum cholesterol level of the human body, reducing the cohesion of platelets, and having a certain ef...

AI Technical Summary

Problems solved by technology

[0004] At present, there are mainly two methods for the production of selenium-enriched grapes in China. One is by spraying liquid inorganic selenium fertilizer (selenite), but this method has limited effects on the one hand, and most of the selenium sprayed is concentrated in the grape skin and cannot Into the grape flesh, it is impossible to cultivate selenium-rich grapes in the true sense; on the other hand, it causes a large amount of inorganic selenium to remain, because inorganic selenium must first be combined with the organic ligand in the intestinal tract before it can be absorbed and utilized by the body, and there are selenium in the intestinal tract. Various elements compete with selenium for limited ligands, thereby greatly affecting the absorption of inorganic selenium

In addition, inorganic selenium has obvious toxic effects on organisms, and its safety is low.

The second is to plant directly in natural selenium-rich areas. This method is difficult to quantitatively control the selenium content, and there are geographical limitations, which is not conducive to large-scale standardized production