冬季低温寡照胁迫下叶面喷施氧化型谷胱甘肽对日光温室草莓生长的影响

Effects of Leaf Spraying GSSG on Strawberry Growth under Low Temperature and Weak Illumination Stress in Winter in Greenhouse

为减轻入冬后持续低温寡照天气对日光温室草莓生长的影响,以红颜草莓为试验材料,研究在入冬后低温寡照阶段,在常规施肥的基础上叶面喷施氧化型谷胱甘肽(300 mg/L)对草莓生长的影响。结果表明:在草莓定植后30 d开始喷施氧化型谷胱甘肽,每隔15 d喷施1次,共喷施7次,可以较对照显著提高草莓植株叶面积30.16%,显著提高SPAD值10.47%;在喷施氧化型谷胱甘肽第3天光合速率显著提高24.11%,喷施后第15天光合速率显著提高25.60%,第21天光合速率显著提高30.09%,但对草莓现蕾率和开花率没有显著影响;可通过显著提升草莓果个数实现草莓667 m^(2)产量显著提升23.83%;对草莓可溶性糖含量提升效果显著,可显著提升草莓的糖酸比21.20%。因此,叶面喷施氧化型谷胱甘肽方案是冬季低温寡照期实现草莓高产、优质、安全、高效生产的有效技术途径。

In order to reduce the effect of continuous low temperature and weak illumination on strawberry growth in winter in greenhouse,taking strawberry variety'Hongyan'as the test material,the effects of foliar spraying GSSG(300 mg/L)based on conventional fertilization on strawberry growth in low temperature and weak illumination period in winter were studied.The results showed that spraying GSSG at 30 days after planting with once every 15 days and seven times in total could significantly increase the leaf area of strawberry plants by 30.16%and SPAD value by 10.47%compared with the control.After spraying GSSG,the photosynthetic rate was significantly increased by 24.11%,25.60%and 30.09%on the third,fifteenth and twenty-first day,respectively,but there was no significant effect on the budding rate and flowering rate of strawberry.The yield of strawberries could be significantly increased by 23.83%per 667 m^(2) by significantly increasing the number of strawberry fruits.The soluble sugar content of strawberry could be improved significantly and the sugar-acid ratio of strawberry could be improved significantly by 21.20%.Therefore,the scheme of foliar spraying GSSG was an effective technical way to achieve high yield,high quality,safe and efficient production of strawberry in low temperature and weak illumination period in winter.