腐植酸复合肥在冬小麦上的应用效果初报

Preliminary Application Effect of Humic Acid Compound Fertilizer on Winter Wheat

以冬小麦为试验对象,研究腐植酸复合肥在冬小麦上的肥效作用。结果表明:在复合肥中添加不同剂量的腐植酸,对产量增加差异较大,施用Ⅲ型腐植酸复合肥冬小麦产量最高,达到484.7千克/亩,比不施肥处理(产量335.0千克/亩)每亩增产149.7千克,提高44.7%;比普通复合肥增产34.8千克/亩,提高7.7%。施用I型、V型、VI型腐植酸复合肥冬小麦产量分别为472.8、466.9和474.3千克/亩,与不施肥处理比,增产率分别为41.1%、39.4%和41.6%;施用Ⅱ型腐植酸复合肥冬小麦产量为449.1千克/亩,与普通复合肥产量无显著差异。在复合肥中添加不同剂量的腐植酸能够提高冬小麦氮肥利用率,降低不同土层硝态氮含量。综上,以Ⅲ型腐植酸复合肥在冬小麦上的应用效果最佳。

The effect of humic acid compound fertilizer on winter wheat was studied by field experiment.The results showed that added different dosage of humic acid in the compound fertilizer induced different increase of the yield.Compared with no fertilization treatment (335.0 kg/667 m^2),the winter wheat yield was 484.7 kg/667 m^2,which increased by 149.7 kg/667 m^2 using type Ⅲ humic acid compound fertilizer,the yield increased by 44.7%.Compared with the common compound fertilizer,the yield increased by 34.8 kg/667 m^2 and 7.7%.Compared with no fertilization treatment,the yield of winter wheat applied with type I,V and VI humic acid compound fertilizer was 472.8 kg/667 m^2,466.9 kg/667 m^2 and 474.3 kg/667 m^2 respectively,and the increase rate was 41.1%,39.4% and 41.6% respectively.The yield was 449.1 kg/667 m^2 in treatment type II humic acid compound fertilizer,which was no significantly difference with common compound fertilizer.Adding different dosage of humic acid in compound fertilizer could improve the nitrogen utilization of winter wheat,and reduce the nitrate nitrogen content in different soil layers.In conclusion,the effect of type Ⅲ humic acid compound fertilizer application on winter wheat was best.