二种含腐植酸钾肥的制备方法及对甘薯、生姜的增产效果

腐植酸是一种有良好生物活性的有机高分子物质,风化煤中含有丰富的腐植酸.根据薯芋作物需钾较多的营养特性,应用风化煤、氢氧化钾、硫酸钾等制备了2种含腐植酸钾肥;通过田间试验,就2种肥料对甘薯、生姜的增产效果进行了研究.试验结果表明:与施用硫酸钾比较,甘薯施用含普通腐植酸钾肥,结薯数相似,平均薯块重显著增加,块根产量提高8.12%;施用含活性腐植酸钾肥,结薯数显著增多,平均薯块重相似,块根产量提高9.52%.生姜施用含普通腐植酸钾肥和含活性腐植酸钾肥,根茎产量分别提高5.28%和12.05%,含活性腐植酸钾肥的增产效果优于含普通腐植酸钾肥.因此,在利用风化煤生产含腐植酸钾肥时,应根据作物类型选择工艺路线.

Preparation of two potassium fertilizers including humic acid and its effects to increase the yield of sweetpotato and ginger

Humic acid is a kind of organic matter with high molecular quantity and satisfactory biological activity,and there are abundant humic acid in airslake-coal.According to the peculiarity that sweetpotato and ginger belong to the crop favoring potassium,two kinds of potassium fertilizer including humic acid were prepared and applied in the field experiment of sweetpotato and ginger.The experimental results showed that to compare with the application of K2SO4,applying the potassium fertilizer including common humic acid(HA-K)in the sweetpotato had no effect on storage roots per plant,significantly increased the fresh weight per lump,and increased storage root yield by 8.12%;applying the potassium fertilizer including active humic acid(AHA-K)in the sweetpotato had no effect on the fresh weight per lump,significantly increased storage roots per plant,and increased storage root yield by 9.52%.Applying HA-K and AHA-K in ginger increased root yield by 5.28% and 12.05% separately,and the degree of increase of root yield was higher in the AHA-K management as compared with in the HA-K management.As a result,the method of using airslake-coal to produce potassium fertilizer including humic acid was varied with different crops.