腐殖酸与尿素配合施用对小麦产量及产量构成的影响

Effects of Combined Application of Humic Acid and Urea on the Wheat Yield and Yield Component

[目的]研究腐殖酸对小麦产量的影响,为制订合理的小麦施肥方案提供理论依据。[方法]采用田间裂区试验,主区为2种磷肥种类(添加腐殖酸与否),副区为4种追肥方式(不同量的普通尿素和不同量的腐殖酸尿素),研究腐殖酸与尿素配合施用对小麦生长及产量构成的影响。[结果]底施普通磷酸二铵375 kg/hm2+普通尿素150 kg/hm2,追施300 kg/hm2腐殖酸尿素可有效促进小麦植株的株高、叶面积系数及地上部干物质量,追肥中尿素添加腐殖酸能明显提高小麦产量和经济系数。[结论]尿素中添加腐殖酸追肥增产效果好于底肥,可大面积推广应用。

[Objective]To research the effects of combined application of humic acid and urea on the wheat yield and yield component,and to establish rational fertilizer application scheme of wheat.[Method]Split plot experiment was adopted. Two types of phosphorus fertilizer（ adding humic acid or not） was assigned to the main plot,and four types of top dressing modes（ different amount of urea and humic acid urea） were used in subplots. Effects of combined application of humic acid and urea on the wheat yield and yield component were researched. [Conclusion]375kg / hm2 ordinary DAP ＋ 150 kg / hm2 urea was used as base fertilizer; topdressing of 300 kg / hm2 urea humate could effectively promote the plant height,leaf area coefficient and aboveground dry matter amount. Adding humic acid in urea in topdressing significantly enhanced the wheat yield and economic coefficient of wheat.[Conclusion]Adding humic acid in urea in topdressing has better effects of yield increasing than base fertilizer,and can be used for large scale extension.