秋季叶面喷施多胺和尿素对酿酒葡萄贮藏营养和抗冻性的影响

为提高酿酒葡萄休眠期贮藏营养水平和抗性,以6a生、长势一致的“赤霞珠”葡萄为试材,研究了秋季叶面喷施不同浓度的多胺、尿素对赤霞珠葡萄叶片光合作用、树体内碳水化合物含量、活性氧代谢、主芽及花序质量的影响.结果表明:在秋季叶面喷施4mM的精胺、1mM的亚精胺或3％的尿素,可显著的提高叶片气孔导度、叶绿素含量、叶片光合速率.这些处理可显著提高休眠期树体内碳水化合物含量和主芽质量,降低枝蔓相对电导率和丙二醛含量,提高SOD、CAT活性,提高了花序的质量.因此,在秋季,叶面喷施适当浓度的多胺或尿素可通过提高叶片光合速率来显著提高酿酒葡萄贮藏营养水平和抗冻性,提高主芽和花序质量,这也有助于酿酒葡萄品质或产量的提高.

Effects of Polyamines and Urea Applied in Autumn on Storage Nutrition Content and Freezing Tolerance in Grapevine

In order to increase the storage nutrition and freezing tolerance in dormancy of grapevine.Used Vitis vinifera L.Cabernet Sauvigno that was 6 years old and had the same growth vogour as materials,the effects of urea and polyamine treatments that influenced on photosynthesis,carbohydrate content,metabolism of reactive oxygen species,bud and inflorescence quality were studied.The results showed that 4 mM spermine,1 mM spermidin,3% urea applied in autumn significantly increased Gs,chlorophyll content and net p...