Foliar fertilizer and method for improving contents of glucoraphanin and organic selenium in broccoli

Abstract

The invention discloses a fertilizer capable of simultaneously improving contents of glucoraphanin and organic selenium in broccoli. The sulfur content in the fertilizer is 1 to 4 mM, and the seleniumcontent in the fertilizer is 50 to 150 mu M. Meanwhile, the invention further provides a method capable of simultaneously improving contents of glucoraphanin and organic selenium in broccoli. The method comprises the step of foliage spraying of the fertilizer on broccoli plants. By means of the foliar fertilizer disclosed by the invention, the content of glucoraphanin in the broccoli is effectively improved by 27.9 to 89.5%, and the content of organic selenium in the broccoli is improved by 5.1 to 16.5 times.

Description

technical field [0001] The invention relates to a broccoli foliar fertilizer and an application method, belonging to the field of fertilizers. Background technique [0002] brocoli (Brassica oleracea L.) It is an annual or biennial herb of the genus Brassicaceae. Cruciferous plants 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, and it exists in large quantities in cruciferous 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 ret...

AI Technical Summary

Problems solved by technology

[0004] Existing cultivation techniques for cauliflower mostly use measures such as induction of exogenous hormones, fertilizer application, and environmental improvement to increase the content of glucoraphanin or selenium in cauliflower curds. Caused the decline of glucoraphanin content, or increased the content of glucoraphanin at the same time, there was no obvious change to the increase of selenium content

While improving the selenium content in cauliflower, its glucoraphanin 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 selenium in cauliflower and at the same time increase its glucoraphanin content, because sulfur and selenium have the same absorption and metabolism pathway in plants, the synthesis of sulfur-containing compounds and selenium-containing compounds is different. There will be interference between them, causing the content of glucoraphanin to decrease while the content of selenium is increased, or the content of glucoraphanin to be increased while the content of selenium has no obvious change