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本试验研究了磷化工的主要污染物固体废渣磷石膏的农业资源化利用。室内测定了磷石膏浸提液对玉米种子有关指标的影响。结果表明,磷石膏浸提液在6 d之内抑制玉米种子的萌发,浓度越高,玉米发芽率越低,且对第3天和第4天的发芽率影响最大。低浓度的磷石膏可以促进α-淀粉酶和(α+β)–淀粉酶的活性,并在0.25%的浓度达到最高值。玉米吲哚乙酸含量有明显变化,0.1%～0.125%浓度处理会使吲哚乙酸含量减少,在0.125%浓度吲哚乙酸含量达到最低值,比对照低27.73μg·g-1,在0.5%达到最高值。种子的吲哚乙酸氧化酶活性降低,0.25%磷石膏抑制作用最强。
This experiment studied the main pollutant phosphorus chemical solid waste phosphogypsum agricultural resources utilization. Indoor determination of phosphogypsum extract on corn seed indicators. The results showed that the phosphogypsum extract inhibited the germination of maize seeds within 6 days. The higher the concentration, the lower the germination rate of maize, and had the greatest effect on the germination rate on the 3rd and 4th days. Low concentration of phosphogypsum can promote the activity of α-amylase and (α + β) -amylase, and reach the highest value at the concentration of 0.25%. The content of indoleacetic acid in corn significantly changed. When the concentration of indoleacetic acid was0.1% ~ 0.125%, the content of indoleacetic acid was reduced, and the content of indoleacetic acid reached0.125%, which was 27.73μg · g-1 lower than the control The highest value. Indole acetate oxidase activity of seeds decreased, 0.25% phosphogypsum had the strongest inhibitory effect.