不同追施氮量和追氮时期对小麦赤霉病发生程度的影响  

Effects of Different Nitrogen Topdressing Rates and Nitrogen Topdressing Periods on the Occurrence of Wheat Scab

作　　者：雍其安 耿娟 YONG Qi-an(Agricultural Technology Extension Center of Dingyuan County,Dingyuan,Anhui 233200)

机构地区：[1]安徽省定远县农业技术推广中心,安徽定远233200

出　　处：《园艺与种苗》2021年第7期66-67,共2页Horticulture & Seed

摘　　要：[目的]明确小麦追施氮量和追氮时期与赤霉病发生间的关系。[方法]设计追施氮量和追氮时期2个因素,比较不同追施氮量和追氮时期下小麦赤霉病的发生程度。[结果]不同追施氮量和追氮时期对小麦赤霉病的发病程度有明显影响。在相同的追氮时期下,追施氮量越高小麦赤霉病发病越重。在相同的追氮量下,追施氮肥时期越靠后,小麦赤霉病发病越重。当在拔节期追氮量为138.00 kg/hm^(2)时,小麦赤霉病发生最重。[结论]该研究为小麦赤霉病的防控提供了新思路。[Objective]The aim of this study was to clarify the relationship between the amount and period of nitrogen topdressing and the occurrence of scab in wheat.[Method]Two factors of topdressing nitrogen amount and topdressing nitrogen period were designed to compare the occurrence degree of wheat scab under different topdressing nitrogen amount and topdressing nitrogen period.[Result]Different amount of nitrogen topdressing and nitrogen topdressing period had significant effects on the incidence of wheat scab.Under the same nitrogen topdressing period,the higher the nitrogen topdressing rate,the more severe the wheat scab.Under the same amount of nitrogen topdressing,the later the topdressing period was,the more severe the wheat scab was.[Conclusion]This study provided a new idea for the prevention and control of wheat scab.

关 键 词：追氮量 追氮时期 小麦赤霉病 发生程度 

分 类 号：S435.121.45[农业科学—农业昆虫与害虫防治]