前言风化煤腐植酸能否对植物起到刺激作用?是有关学者关心探索和争议的问题。有的学者认为煤腐植酸是高分子有机化合物,植物难于吸收利用,故对它能对植物起到刺激作用表示怀疑。认为土壤腐植酸才能被植物吸收利用。70到80年代初美国、希腊、加拿大、印度学者Tan等,Lee,Rauthan等,Mylonas等,在植物营养液中加入不同种类和不同浓度的腐植酸,在水培条 Introduction Weathered coal humic acid can play a stimulating role on plants? Is the scholars concerned about the exploration and controversial issues. Some scholars believe that coal humic acid is a polymer of organic compounds, plants are difficult to absorb and use, so it can play a role in stimulating plant doubts. Soil humic acid that plants can be absorbed. 70 to early 1980s American, Greek, Canadian, Indian scholar Tan et al., Lee, Rauthan et al., Mylonas et al., Added different types and concentrations of humic acid in plant nutrient solution,