Effects of soil nutrients on amino acids in junzao jujube orchard
[Objective]To screen the main soil nutrient factors that affect the amino acids of junjujube fruit,and provide theoretical basis for improving the amino acid content,classifying and deepening the develop-ment and utilization of fruit,as well as scientifically applying fertilization in Junzao Jujube Orchard.[Meth-ods]The soil nutrient status and fruit amino acid content of junzao orchard in Aral,Xinjiang were measured,and the correlation analysis and Multiple Linear stepwise regression analysis were carried out.[Results]Re-search shows that local jujube contains 15 types of amino acids,including 6 essential amino acids and 9 non-essential amino acids.Among them,the medicinal amino acids in jujube are 7 types,with a content of 1.08 ug/100g.The branched-chain amino acids are3 types,with a content of 0.172 μg/100g.The aromatic ami-no acids are5 types,withacontentof0.31 μg/100g.Theumamiaminoacidsare4 types,withacontentof0.211 μg/100g.Thebittertasteaminoacidsare7 types,withacontentof0.322 μg/100g.Thesourtasteamino acids are 2 types,with a content of 0.789 μg/100g.The pH of the jujube orchard soil is8.03.The salt con-tent is 7.14 g/kg.The organic matter content is 12.96 g/kg.The total nitrogen content is 1.08 g/kg.The to-tal phosphorus content is 1.01 g/kg.The total potassium content is 19.40 g/kg.The available phosphorus content is 55.60 mg/kg.The available potassium content is 232.37 mg/kg.The available copper content is 1.88 mg/kg.The available zinc content is 1.63 mg/kg.The available iron content is 24.39 mg/kg.The a-vailable manganese content is 4.33 mg/kg.The available boron content is 1.35 mg/kg.The hydrolyzable ni-trogen content is 111.76 mg/kg.There are correlations between soil nutrients and jujube amino acid content.[Conclusion]The results showed that junzao jujube contained 15 kinds of amino acids,which were rich in medicinal amino acids,sweet amino acids and sour amino acids compared with other kinds of amino acids,the contents of organic matter,manganese and potassium were moderate,and the contents of other nutrients were on the high side,and there were synergistic and antagonistic effects among them.Moreover,the amino acid content of Junjujube was greatly affected by the available manganese,available zinc,available iron,available boron and organic matter in the soil,therefore,the application of organic fertilizer and micro fertilizer should be increased in the fertilization process in the future.
万方数据
维普
