Relationship Between Soil Mineral Elements And Fruit Quality In Peach Orchard

Peach(Prunus persica L.)is a small deciduous tree of Peach subgenus Prunus in Rosaceae.Peach is originally produced in China,with delicious meat and rich nutrition.It is the main fruit tree in China,ranking the fourth in terms of planting area and yield,next only to apples,pears and oranges.Jiangsu is one of the main peach producing areas in China,with a cultivation area of 700,000 mu.Peach is mainly eaten fresh,and its size,appearance,taste,aroma and other indicators affect its sales channels and sales prices.With the improvement of people’s quality of life,consumers’ requirements for fruit quality and flavor are also increasing.Improving fruit quality is one of the primary objectives of fruit cultivation and production."Hujing honey dew" watertight peach is a medium ripe honey peach variety.It occupies an important position in the peach market because of its suitability of sweet and sour,colorful and juicy color and delicious meat quality.In this study,the fruit quality and the content of mineral elements in fruits,leaves and soil of "Hujing honey dew" in Wuxi and Changzhou in 19 years were determined,and the relationships among them were analyzed and compared.The fruit quality and the contents of fruit,leaf and soil mineral elements were measured in Wuxi,Yancheng and Xinyi in the past 20 years.The regional differences and the correlation between soil mineral elements and fruit quality were analyzed and compared.The main results are as follows:1.There was no significant difference in fruit appearance quality between the two orchards in Changzhou,Wuxi,except for the fruit A value.The content of titratable acid and the ratio of solid to acid in the internal quality had great differences,with coefficient of variation of 21.69% and 29.03%.Wuxi,changzhou and taoyuan fruit,leaf and soil between the content of mineral elements has greater relevance,explain in fruit,leaf and soil,among various nutrient elements there is a certain relationship between efficiency and antagonism,if K and Mn in the solid and zinc element,leaves of N,P,Ca,Mg element,in the soil of N,Ca,Mg,Cu element,etc.,many elements of the interaction between relationship;Content of mineral elements and mineral elements content in leaf and soil has a significant correlation,and mineral elements content in leaf and mineral elements in the soil there is significant correlation,but there is no obvious between element content directly influence,there are more of a indirect relationship,such as K element content in soil and K element content in the leaf existed significant correlation,but K element content in fruit with no obvious correlation,and correlation between content of fruit P element has the obvious;Wuxi changzhou both fruit and leaf mineral element content and the correlation of fruit quality is significant,the influence of soil mineral elements content of fruit quality significantly sex is not high,show that both Tao Guo compaction quality mainly by the fruit and leaf mineral element in the collaborative control,and mineral elements content in soil and leaf and fruit mineral elements contain strong correlation,it is possible that influence soil mineral elements content tree nutrition,thus indirectly affects fruit quality.2.The results of sensitivity analysis showed that the contents of N,P,K,Mg and Fe had the greatest effect on the peach fruit quality indexes.When the contents of Mg,P and K were(0.37-0.80 g/kg),(1.43-1.61 g/kg)and(8.70-14.40 g/kg),the contents of Mg,P and Fe were(0.37-0.80 g/kg),(1.43-1.61 g/kg)and(8.70-14.40 g/kg),the contents of N,P and Fe were(0.37-0.80 g/kg)and(1.43-1.61 g/kg),respectively.When Fe content in fruits was(0.045-0.165 g/kg),the fruit weight per peach could be significantly increased.When the fruit P content was(0.83-1.55 g/kg),the fruit Mg content was(0.37-0.70 g/kg),the fruit K content was(9.10-18.40 g/kg),and the fruit N content was(5.44-10.08 g/kg),the soluble solid content of the peach increased significantly.When the content of N,P,Mg and K in fruits were(2.48-5.00 g/kg),(0.80-1.43 g/kg),(0.34-0.47 g/kg)and(11.00-16.90g/kg),the content of titratable acid in fruits decreased significantly.When the content of P,N,Mg and K in fruits were(0.83-1.52 g/kg),(2.36-5.16 g/kg),(0.31-0.80 g/kg)and(11.00-14.70 g/kg),the ratio of solid to acid in peach was significantly increased.3.The single fruit weight of Yancheng fruit was 304.16 g,which was the highest among the three regions.The titrable acid content of Xinyi peach fruit was the lowest,0.18%,and the ratio of solid to acid was the highest,75.92.The content of soluble solids and titratable acid in Wuxi fruits were 13.66% and 0.34%,which were the highest.The fruit,leaf and soil mineral elements of the three regions are also significantly different.The mineral element contents of fruits,leaf and soil in Xinyi area are most significantly or significantly lower than those in Yancheng and Wuxi,but the element content of Mn in Xinyi area is relatively high.The contents of soil mineral elements in Wuxi area were significantly higher than those in Xinyi area except for Mn,S and Ca,and those in Yancheng area except for Ca,N,Mg,S and Fe.The contents of soil mineral elements in Yancheng area were also significantly higher than those in Xinyi area.The correlation between soil mineral elements and fruit quality in Xinyi area is higher than that in Yancheng area,and the same element in different areas has an opposite correlation with the same fruit quality,indicating that there is a complex correlation between soil and fruit quality,rather than a simple positive or negative correlation.