在大量室内筛选的基础上,选择了两种加工简便的煤炭腐植酸物质,以玉米为供试作物,在两种不同肥力水平的土壤上,通过两年生物盆栽试验,进一步证实了煤炭腐植酸抑制剂在栽培作物的条件下,不仅具有与参比抑制剂相近的抑制土壤脲酶活性的功能,而且还表现了其能延长尿素肥效期,并与玉米全生育期需氮规律同步的作用。表明了煤炭腐植酸抑制剂具有良好的生产应用价值。 On the basis of a large number of indoor screening, two kinds of coal humic acids were selected for processing. Using corn as tested crop, bio-pot test for two years was conducted on two soils with different fertility levels to further confirm that coal humic acid Under the condition of cultivated crops, the inhibitor not only has the function of inhibiting soil urease activity similar to the reference inhibitor, but also shows the effect of prolonging the urea fertilizer efficiency and synchronizing with the requirement of nitrogen during the whole growth period of corn. It shows that coal humic acid inhibitors have good production and application value.