Cultivation method of selenium-rich coreopsis tinctoria

Abstract

The invention discloses a cultivation method of selenium-rich coreopsis tinctoria, relating to a culture method of coreopsis tinctoria. The method comprises the steps of: selecting strong wild coreopsis tinctoria seedlings and applying enough organic fertilizer in the fields during the transplanting; after the transplanting, evenly spraying the seedlings; and at coreopsis tinctoria pregnancy period, evenly spraying selenium fertilizer to ensure that the coreopsis tinctoria absorbs the active constituents of selenium and then the kappa-selenocarrageenan content of the coreopsis tinctoria is increased. Moreover, the selenium concentration of the selenium fertilizer is above 20-120mg/L and the spraying dosage is 5-50ml/mu or 5-50g/mu. During the spraying of the seedlings, 50-60mg of selenium fertilizer with selenium content of 10-20% is mixed with 50kg of water to spray evenly; and during the spraying at the coreopsis tinctoria pregnancy period, 100-120mg of selenium fertilizer with selenium content of 20-30% is mixed with 50kg of water to evenly spray on the leaf surfaces. The method has the beneficial effects that the selenium content of the selenium-rich coreopsis tinctoria is up to 368mu g/kg and is more than ten times of the wild coreopsis tinctoria.

Description

technical field [0001] The invention relates to the technical field of crop planting, and further relates to a cultivation method of Kunlun snow chrysanthemum. Background technique [0002] The wild Kunlun snow chrysanthemum grows in parts of the snow line at an altitude of 3,000 meters at the northern foot of the Kunlun Mountains. The environment is special and the flowering period is short. Every August, the snow chrysanthemum blooms only once. It has a miraculous effect of lowering blood pressure and lipids, and has the characteristics of clearing liver and improving eyesight, nourishing liver and nourishing yin, beautifying and nourishing skin, moistening intestines and laxative, and it is good for visual fatigue caused by excessive eye use and liver damage caused by drinking, etc. Symptoms, there is a certain relieving effect, and drinking this tea before going to bed will not cause insomnia, but has the effect of calming the nerves. According to "Xinhua Compendium of ...

AI Technical Summary

Problems solved by technology

However, the selenium content in the existing Kunlun snow chrysanthemum is very low, only 26ug/kg, which is far from the requirement of people drinking tea to supplement selenium. How can effectively improve the cont