The Effect Of Organic Selenium On The Growth And Selenium Enrichment Effect Of Tea Chrysanthemum ’Ruhe’

Selenium is an essential nutrient element for the human body and plants.A moderate amount of selenium has an important effect on the health of the human body and plants.Organic selenium products have unique advantages and are superior to inorganic selenium in terms of physiological activity,absorption and utilization efficiency,and toxicological safety[1].In addition to intake from food,selenium-containing tea drinks are also one of the important ways to provide human selenium content[2].Studies have shown that applying selenium can increase the selenium content in foods or beverages,improve their quality,and increase their yield.However,there are few studies on the selenium-enriching effect of organic selenium on chrysanthemums.To this end,this subject uses ’Ruhe’(Chrysanthemum morifolium ’Ruhe’)as the experimental material to study the effects of soil application of different concentrations of organic selenium on the growth and development of ’Ruhe’ and the effect of selenium enrichment,using fuzzy mathematics membership function method to comprehensively evaluate and screen out a more reasonable selenium concentration,it provides a theoretical basis and practical reference for the scientific and efficient production of selenium-enriched ’Ruhe’.The main conclusions are as follows: The SOD activity of ’Ruhe’ under T4 concentration selenium treatment is higher than that of other treatments,and significantly higher than that of T1 and T2 treatments(P<0.05).’Ruhe’ POD activity under T3 and T4 treatments is significantly higher than that of T1 treatment(P<0.05),MDA content under T3,T4 and T5 treatment was significantly lower than T1 treatment(P<0.05);selenium treatment significantly increased soluble protein content(P<0.05),T3 and T4 treatments had significantly higher soluble sugar content In T1,T2,and T5 treatments(P<0.05),the proline content of ’Ruhe’under T4 and T5 concentration treatments was significantly higher than that of T1 treatment(P<0.05);the chlorophyll a content of ’Ruhe’ under T4 concentration selenium treatment Higher than other treatments,the total content of chlorophyll b and chlorophyll was significantly higher than other treatments(P<0.05),and the carotenoid content was significantly higher than that of T1treatment(P<0.05).Treatments with different concentrations of selenium increased the total chlorophyll content of ’Ruhe’,Different concentrations of selenium treatment increased the net photosynthetic rate,transpiration rate,intercellular CO2 concentration and stoma conductance of’Ruhe’;soil invertase activity under T2,T3 and T4 concentration treatments was significantly higher than that of T1 and T5 treatments(P<0.05),soil catalase activity under T4 treatment was significantly higher than other treatments(P<0.05),soil alkaline phosphatase activity under T4 treatment was significantly lower than other treatments(P<0.05),soil urease activity under T4 treatment was lower T2,T3,and T5 treatments were significantly lower than T1 treatments(P<0.05);different concentrations of selenium treatments increased the content of vitamin C,chlorogenic acid and flavonoids;the selenium content of ’Ruhe’ inflorescences under T2,T3 and T4 treatments Significantly higher than the T1 and T5 treatments(P<0.05);the selenium treatment increased the amount of flowering per plant,the dry matter quality of a single flower and the yield per unit of ’Ruhe’ higher than that of the T1 treatment;the fuzzy mathematics membership function method was used to treat ’Ruhe’.Comprehensive evaluation of the selenium-enrichment effect of ’Ruhe’ shows that the T4 treatment has the best selenium-enrichment effect.