摘要： 三年试验研究结果表明，葡萄在不同时期喷施0.1%的硝酸稀土能提高葡萄树体过氧化氢酶活性，增强葡萄对Co₂的同化能力，增强叶片干物量，使产量提高19.5-43.7%，总糖提高0.30-1.1%，维生素C提高0.13-1.1mg/100g鲜重。在生长期中，以花前、生理落果期、浆果变软初期喷施效果最佳。

关键词: 葡萄, 稀土

Abstract: We have conducted a research experiment work in spraying Rare Earth Elements solution upon grapevines during the period of last three years.It resulted in positive effects on higher yield and better quality.Spraying with 0.1% Nitrate Rare Element in different period improved the activities of hydrogen peroxide,strengthened the capacity of CO2 assimilating into grapevines,and increased leaf dry weight.It also resulted in 19.5-43.7% increment of yield,0.30-1.1% total sugar and 0.13-1.1mg/100g fwt.Vitamin C.From the whole experiment,we could see the chemicals were more effective when sprayed before blooming or during physiological fruit drop and berry softening.

Key words: Grape, Rare earth elements