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以日光温室早春茬中农26黄瓜为试验材料,分别用10、50、100和200毫克/升的赤霉素(GA3)溶液喷施叶片,以清水处理为对照,研究不同浓度GA3对早春黄瓜生长、生理特性、产量及品质的影响。结果表明,与对照相比,喷施GA3处理可促进黄瓜生长。在试验浓度范围内,黄瓜株高、茎粗、叶片数、根系活力、色素含量、净光合速率(Pn)以及氮、磷、钾、钙、镁、铁等矿质元素含量均以50毫克/升处理最高,其中净光合速率比对照增加22.44%;叶绿素a、
The leaves of Zhongnong 26 cucumber were used as raw materials in the greenhouse of early spring in Zhongnong 26, the leaves were sprayed with 10, 50, 100 and 200 mg / L gibberellic acid (GA3) respectively, and the fresh water was used as control to study the effect of GA3 on the growth of cucumber in early spring , Physiological characteristics, yield and quality. The results showed that GA3 treatment promoted the growth of cucumber compared with the control. The plant height, stem diameter, number of leaves, root activity, pigment content, net photosynthetic rate (Pn) and contents of mineral elements such as N, P, K, Ca, Mg and Fe were all within 50 mg / The highest, the net photosynthetic rate increased 22.44% than the control; chlorophyll a,