Effects Of Boron And Magnesium Fertilizers On The Yield And Quality Of ’Hongjinlong’ Mango

Using soil-testing formula fertilization technology can improve fertilizer utilization,save resources,reduce pollution,protect agricultural ecological environment,and improve crop yield and quality.This study combined with field production practice,selected the main mango varieties of `Hongjinlong’as the test object on Hainan Province,Through the study of four levels of pure boron(0g/plant,1.13g/plant,2.26g/plant,3.39g/plant),pure magnesium four levels(Og/plant,10g/plant,20g/plant,30g/plant)with the application of’Hongjinlong’ mango Leaf Nutrition,fruit nutrition,soil nutrients,yield and fruit quality,in order to provide reference for Hainan Province ’Hongjinlong’ Mango Production.he results of this study are as follows:1.Effects of boron and magnesium fertilizers on flower rate and irrigationin rate of’Hongjinlong’ Mango.The amount of magnesium fertilizer was correlated with the flowering rate,and the dosage of boron and magnesium fertilizer was positively correlated with the rate of irrigationin,and boron fertilizer was more correlated with irrigationin rate.In a comprehensive way,the flower rate and irrigationin rate of the processing E(Mg2B2)are best,the effect of I(Mg3B3)treatment is second.And the application of different dosage of boron,magnesium fertilizer on the flowering rate and irrigationin rate overall have a role in promoting.2.Effects of boron and magnesium fertilizers on the yield and single fruit weight of’Hongjinlong’ Mango.The results showed that the effect of weight gain was the most obvious in treatment D(Mg2B1)compared with control,but the effect of increasing yield was poor.E(Mg2B2)Treatment of single fruit weight is second only to D(Mg2B1),G(Mg3B1),but the best yield effect,to 35.68%;the worst results were treated A(Mg1B1),and the single fruit weight and yield were lower than the control.The effect of each treatment on the yield and single fruit weight of ’Hongjinlong’ Mango treating E(Mg2B2)was the best,and the effect of treating A(Mg1B1)was the worst.3.Effects of boron and magnesium fertilizers on VC content and fruit appearance quality of ’Hongjinlong’Mango.In addition to the treatment of A(Mg1B1),B(Mg1B2)vitamin C content than CK treatment of vitamin C content is lower,the remaining treatment is higher than CK treatment content.The highest level of vitamin C was treated H(Mg3B2),and the worst effect was to deal with A(MgiB1).In the effect of fruit appearance quality,the treatment of G(Mg3B1)is the best,the treatment of E(Mg2B2),D(Mg2B1)second,medium-high dosage of magnesium fertilizer,the longitudinal diameter of the low-medium dosage boron fertilizer was higher than that of other fertilization,the most obvious aspect was the treatment of D(Mg2B1),followed by the treatment of F(Mg2B3),high level magnesium fertilizer had the greatest influence on the transverse diameter of fruit,and boron fertilizer had little influence on the transverse diameter of fruit.4.Effects of boron and magnesium fertilizers on soluble solids and titration acid and acid-fixing ratio of mango in ’Hongjinlong’.Compared with the control treatment,in the soluble solids,the treatment of F(Mg2B3)is the best,the worst effect is the treatment of D(Mg2B1),only increased by 3.48%.On the titration acid,the reduction effect of the treatment of C(MgiB3)is the most obvious;the worst reduction is the treatment of B(MgiB2),which is only 8.33%lower.The effect of treating I(Mg3B3)was the most obvious in the ratio of solid to acid,and the worst was the treatment of B(MgiB2),which decreased by 1.85%.The effect of each treatment is the best.5.Effects of boron and magnesium fertilizers on mineral nutrients in leaves and fruits.Applying different dosage of boron and magnesium fertilizer can increase the nutrients of B and Mg in the leaves,and promote the absorption of Mg and B in the fruit,but when boron and magnesium fertilizer is used excessively,the absorption of the fruit to other nutrients will be inhibited.The higher the nutrient content in the soil,the stronger the fruit’s ability to absorb nutrients.6.Recommended amount of fertilization.According to the ranking of the good degree of factor evaluation,it is recommended that the better combination of fertilization ratio is N(Pure quantity)490g/plant+P(P205)112g/plant+K(K20)540g/plant+Mg(Pure quantity)20g/plant+B(Pure quantity)2.26g/plant.