膨大期西瓜果实不同部位5种重金属富集变化的差异性研究OA北大核心CSTPCD
Differential changes in the enrichment of five heavy metals in different parts of watermelon fruits at the expansion stage differential study of enrichment changes in different parts of melon
[目的]明确膨大期西瓜果实不同部位5种重金属富集变化的差异.[方法]以7月8日至7月22日采集的西瓜果实不同部位及果实对应根际土壤为研究对象,根据对应国家标准方法开展了样品中Cd、Cu、As、Ni、Cr 5种重金属的定量分析,并根据定量分析结果,探讨了膨大期西瓜果实不同部位5种重金属富集系数变化的差异.[结果]随时间延长,西瓜果皮Cd、Cu、As、Ni富集系数呈升高、降低、后升高再降低的变化趋势,Cr富集系数呈先升高后降低的趋势;临近末次采样时间,果肉As、Ni、Cr富集系数呈升高、降低、升高、再降低的变化趋势,Cu富集系数呈降低、升高后降低的变化趋势,Cd富集系数呈现出较强的波动性,该结果提示:适当延后采收期利于降低西瓜果皮果肉Cd富集水平.西瓜果皮上部位和果肉上部位Cd、Cu、Ni、Cr、As富集变化的差异性相对较强.[结论]西瓜果皮果肉5种重金属的富集变化存在差异,可根据该差异,通过适时延后采摘或提前采收的方式,降低目标调控重金属果实富集水平;果皮上部位适合作为探讨西瓜果皮5种重金属富集变化的代表性部位,果肉上部位适合分别作为分析西瓜果肉Cd、Cu、Ni、Cr与As富集变化的代表性部位.
[Objective]To clarify the differences in the enrichment changes of five heavy metals in different parts of watermelon fruits during the expansion period.[Method]Different parts of watermelon fruits and the corresponding inter-root soil of the fruits collected from July 8 to July 22 were used as the research objects,and the quantitative analysis of the five heavy metals in the samples of Cd,Cu,As,Ni and Cr was carried out according to the corresponding national standard methods,and based on the results of the quantitative analysis,the differences in the changes in the enrichment coefficients of the five heavy metals in different parts of watermelon fruits in the expansion period were explored.[Result]With the extension of time,the enrichment coefficients of Cd,Cu,As and Ni in watermelon rind showed the trend of increasing,decreasing,then increasing and decreasing,and the enrichment coefficients of Cr showed the trend of first increasing and then decreasing;near the last sampling time,the enrichment coefficients of As,Ni and Cr in fruit flesh showed the trend of increasing,decreasing,increasing and then decreasing,the enrichment coefficients of Cu showed the trend of decreasing,increasing and then decreasing,and the enrichment coefficients of Cd The Cd enrichment coefficient showed a strong fluctuation,which suggests that delaying the harvesting period is conducive to reducing the Cd enrichment level in the rind and pulp of watermelon.The differences in Cd,Cu,Ni,Cr and As enrichment between the upper part of watermelon rind and upper part of fruit flesh were relatively strong.[Conclusion]There are differences in the enrichment changes of the five heavy metals in the rind and pulp of watermelon,according to which the fruit enrichment level of the target regulatory heavy metals can be reduced by delaying the picking at the right time or harvesting in advance;the upper part of the rind is suitable to be used as a representative site for exploring the changes in the enrichment of the five heavy metals in the rind of watermelon,and the upper part of the pulp is suitable to be used as a representative site for analyzing the changes in the enrichment of the Cd,Cu,Ni,Cr,and As in the pulp of watermelon,respectively.
勿吉斯古冷;沈琦;马磊;盘菊秀;何伟忠;王成
新疆农业大学 食品科学与药学学院,新疆 乌鲁木齐 830052||新疆农业科学院 农业质量标准与检测技术研究所 农村农业部农产品质量安全风险评估实验室/农村农业部荒漠绿洲生态区特色农产品功能营养与健康重点实验室(部省共建),新疆 乌鲁木齐 830091新疆农业科学院 农业质量标准与检测技术研究所 农村农业部农产品质量安全风险评估实验室/农村农业部荒漠绿洲生态区特色农产品功能营养与健康重点实验室(部省共建),新疆 乌鲁木齐 830091新疆农业大学 农学院,新疆 乌鲁木齐 830052新疆农业科学院,新疆 乌鲁木齐 830091
园艺学与植物营养学
西瓜重金属富集
watermelonheavy metalenrichment
《江西农业大学学报》 2024 (003)
663-671 / 9
国家农业现代产业技术体系资助项目(CARS-25)和新疆维吾尔自治区重大科技专项(2022A02006-1)Project supported by the National Agricultural Modern Industrial Technology System(CARS-25),Major Science and Technology Special Project of the Xinjiang Uygur Autonomous Region(2022A02006-1)新疆西甜瓜产业技术体系(XJARS-06)同时对本研究给予了资助,谨致谢意!
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