Effects Of Large,Medium And Trace Elements On The Yield And Quality Of Areca Nut In Hainan

The planting area of Hainan’s Areca catechu is more and more extensive,but the management is extensive,resulting in a large number of yellowing phenomena,most of which are physiological yellowing.Physiological yellowing is caused by malnutrition,which results in reduced Areca catechu production and low fruit quality.In order to improve this phenomenon,it is carried out in terms of large and medium trace elements.Rational application of fertilizer can improve crop yield,improve crop quality,reduce resource input reasonably,achieve the goal of weight loss and increase production,reduce pollution and protect the environment.This study combined with the actual production of Daejeon,selected the Areca catechu plants as the object,and studied the effects of the treatment of large and medium trace elements on the yield and quality of areca nut,in order to draw some conclusions and to provide some scientific value reference for improving the production of Areca catechu in Hainan..The results of this study are as follows:1.Study on the Areca catechu fruit by different ratios of NPK fertilization.Nitrogen,phosphorus and potassium ratio fertilization can increase the number of Areca catechu branches and the number of female flowers.High nitrogen(N:P:K=2:1:1)can increase the number of female flowers and fruit vitamin content in Areca catechu flowering period;high potassium fertilizer(N:P:K=1:1:2)can increase Areca catechu fruit rate and polyphenols.The content of the substance and the content of cellulose;Balanced fertilization(N:P:K=1:1:1)has the best effect,and the number of single shuttle branches,the number of female flowers,the fruit setting rate,the cellulose content,and the vitamin C content are all improve.2.Different kinds of medium and trace element fertilizers on Areca catechu research.Total nutrient element fertilizer(CK)treatment increased the yield per plant and soluble sugar content and vitamin C content;magnesium fertilizer and copper fertilizer could increase the yield per plant of Areca catechu:boron fertilizer could increase the fruit set rate;calcium and zinc Copper,fruit,cellulose content,soluble sugar content,vitamin C content have increased.Comprehensive comparison shows that the trace elements in magnesium and copper have a great influence on the yield and quality of Areca catechu.3.Different concentrations of medium and trace element magnesium fertilizer and copper fertilizer on Areca catechu fruit research.0.5%magnesium fertilizer and 0.15%copper fertilizer spray treatment can increase the fruit setting rate of Areca catechu;0.9%magnesium fertilizer can make fruit shape elongation;0.5%magnesium fertilizer can increase Areca catechu vitamin C content;0.05%copper fertilizer can increase Areca catechu total Phenol content;0.05%copper fertilizer increased fruit cellulose content;0.9%magnesium fertilizer and 0.15%copper fertilizer spray increased Areca catechu yield.Magnesium fertilizer and copper fertilizer caused the total phenolic content of areca nut to change greatly on the 80th day of growth;on the 60th day,the vitamin C content changed greatly,and the cellulose reached the highest.4.Factor evaluation of fertilization.Ranking of comprehensive evaluation of different fertilization:Cu 0.15%>Balanced fertilization>High nitrogen>CK空 0.7%>CK0>Cu 0.1%>Mg 0.5%>CK 1 0.3%>High potassium>CK空 0.5%>Cu 0.05%>Mg 0.9%>Mg 0.7%For the production of areca nut,the application of balanced fertilization(N:P:K=1:1:1)is the best,followed by spraying 0.15%copper fertilizer,and the difference between the two is small;other spraying treatment effect is relatively blank Poor control;for the quality of areca nut,the application of balanced fertilization is the best for improving the quality of Areca catechu;followed by spraying 0.1%copper fertilizer,and other fertilization treatments are less effective.