摘要
宁夏贺兰山东麓强碱性土壤环境有效铁迁移性差,常导致酿酒葡萄黄叶病发生,严重影响果实产量和品质。叶面喷施微肥被广泛用于矫治缺素症,但酿酒葡萄适宜的铁肥施用浓度尚不清楚。本研究以贺兰山东麓优势酿酒葡萄品种马瑟兰为试材,在果实膨大期、转色期、果实成熟期叶面喷施螯合态铁(EDTA-Fe),探究酿酒葡萄生长发育、产量及品质对EDTA-Fe的响应机理。结果表明,叶面喷施适量EDTA-Fe可显著提升酿酒葡萄叶绿素含量,增强光合作用强度,显著提高果实产量、花色苷、总酚及可溶性固形物含量,过量施用抑制作用显著;相关性分析、主成分分析得出,酿酒葡萄最佳EDTA-Fe喷施浓度为7.25 kg/hm^(2)。
The poor mobility of available iron in the strong alkaline soil in the eastern foot of Helan Mountain in Ningxia frequently leads to yellow leaf disease of wine grapes,which seriously affects the fruit yield and quality.Foliar spraying of micronutrient-fertilizer has been widely used to treat the micronutrient deficiency syndrome,but the appropriate concentration of iron fertilizer applied to wine grapes is still unclear.In this study,the new wine grape variety Matheran in the eastern foot of Helan Mountain was selected as test material,and the response mechanism of growth,yield and quality of wine grape to EDTA-Fe was investigated by foliar spraying chelated iron(EDTA-Fe)during fruit expansion stage,color transformation stage and fruit maturity stage through field experiments.The results showed that the content of chlorophyll and the intensity of photosynthesis were enhanced significantly by foliar spraying EDTA-Fe,and the fruit yield,the content of anthocyanins,total phenols and soluble solids were also significantly increased,but excessive application had a significant inhibitory effect.Correlation analysis and principal component analysis showed that the optimal EDTA-Fe concentration was 7.25 kg/hm^(2).
作者
解昊郡
顾梅花
孙权
XIE Haojun;GU Meihua;SUN Quan(School of Agriculture,Ningxia University,Yinchuan,Ningxia Hui Autonomous Region,750021,China)
出处
《中国南方果树》
北大核心
2024年第6期233-240,共8页
South China Fruits
基金
宁夏回族自治区重点研发计划项目(NGSB-2021-4)资助。
