Foliar fertilizer and method for improving contents of raphanin and organic selenium in Chinese kale bolt

Abstract

The invention discloses a fertilizer capable of simultaneously improving contents of raphanin and organic selenium in Chinese kale bolt. The sulfur content in the fertilizer is 1 to 4 mM, and the selenium content in the fertilizer is 40 to 80 mu M. Meanwhile, the invention further provides a method capable of simultaneously improving contents of the raphanin and organic selenium in broccoli. The method comprises the step of leaf spraying the fertilizer on Chinese kale plants. By means of the foliar fertilizer disclosed by the invention, the content of the raphanin in the Chinese kale bolt is effectively improved by 13.5 to 59%, and the content of the selenium in the Chinese kale bolt is improved by 11.9 to 54.1 times.

Description

technical field [0001] The invention relates to a foliage fertilizer for kale, belonging to the field of fertilizers. Background technique [0002] Kale (Brassica oleracea L.) is an annual or biennial herbaceous plant of Brassica genus. Kale sprouts are rich in glucosinolates, among which glucoraphanin is hydrolyzed by myrosinase to generate sulforaphane, which has strong anti-cancer and anti-cancer functions. Sulforaphane is one of the substances with the best anti-cancer and anti-cancer effects in vegetables so far. It exists in large quantities in cruciferous vegetables, especially cabbage vegetables. Selenium is a non-metallic element that is closely related to human health. It has various biological functions such as enhancing human immunity, anti-aging, and anti-cancer. Appropriate selenium supplementation can reduce the incidence of diseases such as arteriosclerosis, hypertension, myocardial infarction, senile neurological insufficiency, memory and mental retardatio...

AI Technical Summary

Problems solved by technology

[0004] Existing kale cultivation techniques mostly use measures such as induction of exogenous hormones, fertilizer application, and environmental improvement to increase the content of sulforaphane or selenium in kale stalks, but these cultivation measures are not effective in increasing the selenium content of kale stalks. At the same time, it caused the decrease of sulforaphane content, or while increasing the content of sulforaphane, there was no obvious change to the increase of selenium content

While increasing the selenium content in kale, its sulforaphane content is significantly increased, but there is no effective cultivation method at present.

[0005] Although various existing cultivation techniques are used to increase the content of sulforaphane while increasing the content of selenium in Chinese kale, since sulfur and selenium have the same absorption and metabolism pathway in plants, the synthesis of sulfur-containing compounds and selenium-containing compounds is difficult. There will be interference between them, resulting in an increase in selenium content while a decrease in sulforaphane content, or an increase in sulforaphane content while no significant change in selenium content