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以草莓品种“丰香”为试材,研究了温室栽培条件下,0、40、80、120mg/kg不同土壤氮素水平对草莓果实发育阶段叶片的光合色素、最大光合速率、硝酸还原酶活性和可溶性蛋白质含量的影响,以期为设施草莓土壤氮素管理提供参考依据。结果表明:在花期和坐果期,草莓叶片叶绿素含量、最大光合速率、硝酸还原酶活性和可溶性蛋白质含量随氮素水平的增加而增加,以120mg/kg氮素处理促进作用最强;在果实膨大期、果实转色期和成熟期,草莓叶片叶绿素含量、最大光合速率、硝酸还原酶活性和可溶性蛋白质含量随氮素水平增加呈先增加后减小趋势,以80mg/kg氮素处理促进作用最强。
Taking strawberry variety “Fengxiang” as test material, the effects of 0, 40, 80 and 120 mg / kg nitrogen levels on photosynthetic pigments, maximum photosynthetic rate, nitrate reduction Enzyme activity and soluble protein content, in order to provide a reference for strawberry soil nitrogen management in facilities. The results showed that the leaf chlorophyll content, maximum photosynthetic rate, nitrate reductase activity and soluble protein content of strawberry increased with the increase of nitrogen level during the flowering and fruit setting stages, The chlorophyll content, maximum photosynthetic rate, nitrate reductase activity and soluble protein content in strawberry leaves increased firstly and then decreased with the increase of nitrogen level. The effect of nitrogen treatment with 80mg / kg nitrogen fertilizer was the highest Strong.