磷酸脲肥对马铃薯土传病害发生的影响  

Effect of Urea Phosphate Fertilizer on Soil Borne Diseases of Potato

作　　者：刘霞[1,2] 黄勋 许改换 杨艳丽 LIU Xia;HUANG Xun;XU Gaihuan;YANG Yanli(College of Plant Protection,Yunnan Agricultural University,Kunming 650201;Key Laboratory of Plant Pathology of Yunnan,Kunming 650201)

机构地区：[1]云南农业大学植物保护学院,昆明650201 [2]云南省植物病理重点实验室,昆明650201

出　　处：《中国农学通报》2023年第12期116-122,共7页Chinese Agricultural Science Bulletin

基　　金：云南省科技厅重大专项“马铃薯主要病虫害绿色防控智能化技术体系构建”(202102AE090018);云南省教育厅基金项目“影响云南马铃薯疮痂病发生因素研究”(2021J0120)。

摘　　要：探讨不同浓度下磷酸脲肥对马铃薯疮痂病和粉痂病发生情况的影响,为马铃薯土传病害防控研究提供新思路。本试验在混合土和带菌基质中设定5个不同处理的磷酸脲肥:(1)不施P_(2)O_(5)(CK);(2)施P_(2)O_(5)43 kg/hm^(2)(T1);(3)施P_(2)O_(5)86 kg/hm^(2)(T2);(4)施P_(2)O_(5)172 kg/hm^(2)(T3);(5)施P_(2)O_(5)344 kg/hm^(2)(T4),收获时调查病害发生情况,分析磷酸脲肥对2种病害发生的影响。结果表明混合土中施用磷酸脲肥6.8 g/株、带菌基质中施用磷酸脲肥3.4 g/株能有效降低马铃薯疮痂病的发生,而混合土和带菌基质中施用磷酸脲肥对粉痂病的发生均无影响。The study aims to explore the effects of urea phosphate fertilizer of different concentrations on the occurrence of potato scab and powdery scab,so as to provide a new idea for the prevention and control of potato soil borne diseases.In this experiment,five urea phosphate fertilizer treatments were set in the mixed soil and bacterial matrix,including P_(2)O_(5)(CK),P_(2)O_(5)43 kg/hm^(2)(T1),P_(2)O_(5)86 kg/hm^(2)(T2),P_(2)O_(5)172 kg/hm^(2)(T3),and P_(2)O_(5)344 kg/hm^(2)(T4).The occurrence of diseases was investigated at harvest,and the effects of urea phosphate fertilizer on the occurrence of the two diseases were analyzed.The results showed that the application of urea phosphate fertilizer 6.8 g/plant in mixed soil and 3.4 g/plant in bacterial matrix could effectively reduce the occurrence of potato scab,while the application of urea phosphate fertilizer in mixed soil and bacterial matrix had no effect on the occurrence of powdery scab.

关 键 词：磷酸脲肥 疮痂病 粉痂病 混合土 带菌基质 

分 类 号：S474.3[农业科学—农业昆虫与害虫防治]