【摘要】 以基质栽培雪沁香草莓为试材，通过电热线加温控制使设施内草莓生长期的白天根域温度为16℃，以不进行加温处理为对照，测定不同温度下草莓的生长发育、根系氮代谢相关酶活性和果实品质等指标。结果表明，白天根域加温可以改善根区环境，有效促进草莓生长。与对照相比，加温处理草莓根系活力提高30.34%（处理21 d）；在处理28 d时，根系氮代谢关键酶GS、GDH活性分别提高27.74%、20.86%；单株产量提高30.45%，果实可溶性蛋白含量提高14.94%，可溶性糖含量提高7.03%，总酸含量降低9.68%。综合各项指标表明，白天根域加温处理促进了植株生长发育，增强了根系氮代谢关键酶活性，提高了产量和果实品质，能优化冬季草莓栽培条件，为草莓冬季生产管理提供新方法。更多还原

【Abstract】 ’Xueqinxiang’ strawberries cultivated in substrate were employed as the test material. During the growth period of strawberries in the facility, the root field temperature during the day was regulated to 16 ℃ by heating with electric heating wires. The treatment without heating was taken as the control. Indicators including the growth and development of strawberries, the activities of enzymes related to root nitrogen metabolism, and fruit quality were determined under different temperatures. The results showed that the warming of root zone during the day could improve the environment of root zone and effectively promote the growth of strawberry. Compared with the control, the root activity of strawberry treated with heating was increased by 30.34%(21 days of treatment). After 28 days of treatment, the activities of GS and GDH, the key enzymes of root nitrogen metabolism, were increased by27.74% and 20.86%, respectively. The yield per plant increased by 30.45%, fruit soluble protein content increased by 14.94%, soluble sugar content increased by 7.03%, total acidity content decreased by 9.68%. The results showed that the root field heating treatment promoted plant growth and development, enhanced the activities of key enzymes of root nitrogen metabolism, increased the yield and the fruit quality, optimized the cultivation conditions of strawberry in winter, and provided a new method for strawberry production management in winter.更多还原