Analysis of Quality and Aroma Components of'Merlot'Grape from Different Areas in Hexi Corridor
In order to clarify the fruit quality and aroma substance content characteristics of'Merlot'grape from different producing areas in Hexi Corridor,this study analyzed the climate data,soil nutrients,fruit quality and aroma substance components of Jiayuguan,Zhangye and Wuwei producing areas for three consecutive years.The results showed that the soil of the three regions was generally lack of organic matter,and the content of organic matter was below grade 4(lack).The pH value of soil was from 7.72 to 8.23,belonging to neutral to alkaline soil.The contents of nitrogen,phosphorus and potassium in the surface soil are relatively rich,and the contents of iron,copper and manganese in the soil at different depths in Wuwei are relatively high.The monthly effective accumulated temperature and diurnal temperature difference in Zhangye from April to September are significantly higher than those in other regions,and the rainfall in Wuwei region is the largest.The glucose content in the fruit quality of the three producing areas was Zhangye＞Jiayuguan＞Wuwei,and the sucrose content was the opposite,and the content of tartaric acid,citric acid and ascorbic acid in Wuwei was higher than that in the other two producing areas.The total content of aroma compounds in fruit quality in Jiayuguan in 2018 and 2019 was higher than that in the other two producing areas.Environmental factors such as temperature and precipitation were significantly correlated with fruit sugar and acid content,and mineral elements such as calcium,manganese,copper and iron in soil were also significantly correlated with fruit sugar and acid content.Therefore,it can be considered that the differences of aroma substances in different habitats are the result of the combined action of environmental factors and soil nutrition.
NETL
NSTL
万方数据
