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通过研究褐煤经微生物降解获得的黄腐酸所制成的包衣剂对玉米幼苗株高、叶绿素含量及根活力的影响,发现200mg/kg黄腐酸包衣的玉米在生长第15d时,幼苗株高比对照提高5.60cm,而采用300mg/kg黄腐酸包衣的玉米叶绿素含量增加了0.27mg/g,根系活力增加了70.93g/(g·h)。实验结果表明,低浓度的黄腐酸能促进玉米的生长、增加叶绿素含量及增强根活力,而高浓度的黄腐酸对三者均有抑制作用。
By studying the influence of the coating agent of fulvic acid obtained from microbial degradation of lignite on the plant height, chlorophyll content and root vigor of corn seedlings, it was found that when the 200 mg / kg fulvic acid-coated corn was grown on the 15th day, The plant height was 5.60 cm higher than that of the control, while that of corn with 300 mg / kg fulvic acid increased by 0.27 mg / g and the root activity increased by 70.93 g / (g · h). The results showed that FA could promote the growth of maize, increase the content of chlorophyll and increase the activity of root, while FA with high concentration could inhibit the growth of maize.