腐植酸尿素对鲜食型甘薯生长及产量形成的影响  

Effects of Humic Acid Urea on Growth and Yield of Fresh Edible Sweet Potato

作　　者：井水华 范建芝[1] 冯维清 王洪芹[1] 郑鹏[1] 段成鼎[1] 黄成星[1] Jing Shuihua;Fan Jianzhi;Feng Weiqing;Wang Hongqin;Zheng Peng;Duan Chengding;Huang Chengxing(Jining Academy of Agricultural Sciences,Jining 272031,China)

机构地区：[1]济宁市农业科学研究院,山东济宁272031

出　　处：《山东农业科学》2021年第4期98-102,共5页Shandong Agricultural Sciences

基　　金：国家现代农业产业技术体系专项(CARS-10-C10)。

摘　　要：本试验以鲜食型甘薯徐薯32为材料,在当地甘薯田氮肥常规施用量(纯氮90.0kg/hm^(2))的基础上适当减少用量,研究减氮条件下腐植酸尿素和普通尿素对甘薯生长、产量形成及肥料利用率的影响。结果表明:腐植酸尿素、普通尿素处理比常规施肥量减少15.38%~24.61%条件下,甘薯鲜薯产量显著提高8.47%~12.06%,商品薯产量显著提高5.08%~17.38%;等氮量条件下,腐植酸尿素处理的鲜薯、商品薯产量最高比普通尿素处理分别提高3.31%、11.70%,氮肥农学利用率提高9.99%~52.98%;在等氮量条件下,与普通尿素相比,腐植酸尿素不仅能保障甘薯高产稳产,还能提高其氮肥农学利用率和偏生产力,达到节肥增效、减少对环境污染的目的。In this experiment,the fresh edible sweet potato cultivar Xushu 32 was used as test material.The effects of humic acid urea and common urea on the growth,yield and fertilizer utilization of sweet potato were studied under the condition of nitrogen reduction on the basis of conventional nitrogen fertilizer application amount(90.0 kg/hm^(2) of pure nitrogen)in the local fields.The results showed that the yield of sweet potato increased by 8.47%~12.06%and that of commercial sweet potato increased by 5.08%~17.38%when the application of nitrogen fertilizer decreased by 15.38%~24.61%compared with the conventional application of nitrogen fertilizer.Under the condition of equal nitrogen application amount,compared to common urea,humic acid urea could safeguard high and stable yield of sweet potato,increase the nitrogen agronomy efficiency and partial factor productivity,and reach the purpose of reducing fertilizer,increasing efficiency and decreasing pollution to environment.

关 键 词：甘薯 腐植酸尿素 减氮 生长 产量形成 

分 类 号：S143.1[农业科学—肥料学] S531[农业科学—农业基础科学]