营养液中添加不同剂量黄腐酸对基质栽培黄瓜生长、品质及产量的影响

发布时间：2018-01-10 13:02

本文关键词：营养液中添加不同剂量黄腐酸对基质栽培黄瓜生长、品质及产量的影响　出处：《山东农业大学》2017年硕士论文　论文类型：学位论文

【摘要】：黄瓜(Cucumis sativus L.),葫芦科黄瓜属植物。是一种世界性的重要蔬菜作物,也是我国设施栽培中面积较大、种植范围较广的主要蔬菜作物之一。黄腐酸(fulvic acid,FA)是一种溶于水的灰黑色粉末状物质。已有的大量研究结果表明,黄腐酸能促进植物生长,对提高植株抗逆能力,增产和改善品质方面具有重要作用。本试验通过研究在微咸水灌溉和淡水灌溉两种生长环境下营养液中添加不同剂量黄腐酸对设施栽培黄瓜生长、品质和产量的影响,旨在确定出盐渍环境和正常环境下设施栽培黄瓜专用营养液最适黄腐酸添加浓度。主要研究结果如下:微咸水灌溉条件(1)黄瓜营养生长前期黄腐酸最适添加浓度为100mg/L,后期为800mg/L。(2)黄腐酸添加浓度为100mg/L显著降低黄瓜果实总酸度,显著提高黄瓜果实可溶性糖含量;50mg/L的黄腐酸显著提高黄瓜果实Vc含量。(3)黄腐酸添加浓度为100mg/L的处理具有最高的总产量和黄瓜座果数。淡水灌溉条件(1)综合分析,在黄瓜营养生长阶段,营养液中添加不同剂量黄腐酸对黄瓜植株生长影响不显著。(2)黄腐酸添加浓度为50~1600mg/L的处理黄瓜果实硝酸盐含量与对照相比具有显著差异,其中黄段添加浓度为50mg/L的果实硝酸盐含量最低;添加浓度为50mg/L显著提高黄瓜果实可溶性糖和Vc含量,显著降低果实总酸度。(3)黄腐酸添加浓度为200mg/L的处理具有最高的平均单果重和总产量。
[Abstract]:Cucumis sativus L., Cucurbitaceae, is an important vegetable crop in the world and has a large area in protected cultivation in China. Fulvic acid (FA) is a kind of gray and black powder substance soluble in water, which has been shown by a large number of research results. Fulvic acid can promote plant growth and enhance plant stress resistance. This experiment was conducted to study the effects of different doses of fulvic acid on the growth of greenhouse cucumber under two growing conditions: brackish water irrigation and fresh water irrigation. The effect of quality and yield. The purpose of this study was to determine the optimum concentration of fulvic acid added to the special nutrient solution for cucumber cultivation in saline environment and normal environment. The main results are as follows: irrigation condition of brackish water. The optimum concentration of fulvic acid in cucumber was 100 mg / L. The total acidity of cucumber fruit was significantly decreased and the soluble sugar content of cucumber fruit was significantly increased by adding 100 mg / L fulvic acid to 100 mg / L fulvic acid at later stage. 50 mg / L fulvic acid significantly increased the VC content of cucumber fruit. 3) the treatment with 100 mg / L fulvic acid had the highest total yield and fruit number of cucumber. Comprehensive analysis. In the vegetative growth stage of cucumber. The effect of different doses of fulvic acid on cucumber plant growth was not significant. The nitrate content of cucumber fruit treated with fulvic acid was significantly different from that of the control at the concentration of 50 ~ 1600mg / L. The content of nitrate was the lowest at the concentration of 50 mg / L in yellow segment. The concentration of 50 mg / L increased the content of soluble sugar and VC in cucumber fruit. The treatment with a concentration of 200 mg / L of fulvic acid had the highest average fruit weight and total yield.
【学位授予单位】：山东农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S626;S642.2

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