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1、河北农业大学本科毕业论文题目：马铃薯早疫病流行动态调查及化学防治策略田间试验学院：现代科技学院专业班级：动植物检疫0801学号：2008614130116学生姓名:林龙龙指导老师：胡同乐职称：教授二O一一年9月9号马铃薯早疫病流行规律及化学防治田间试验动植物检疫：林龙龙指导教师：胡同乐(河北农业大学现代科技学院河北保定071000)摘要：马铃薯早疫病近年来在各个主产区发生比较严重，为此我们对河北省张家口市张北县喜顺沟进行了马铃薯早疫病流行学调查以及不同用药策略的筛选试验。结果表明：7-8月雨季温湿度合适时易发病，若此期间雨水过多、雾多或露水重、
2、暴风雨次数多，发病重。尤其是在在高温、干旱条件下，特别是干燥天气和湿润天气交替出现期间，早疫病发生和流行最迅速，马铃薯在苗期到孕蕾其期发病度非常轻，均不超过5%，直到始花期开始病害严重度逐渐加重，在盛花期到生长期急剧加重，达到50%以上；刚发现病斑开始用药，能将上部、中部叶片的病害的严重度控制在10%以下，将其病害的严重度降低了10个百分比，将下部叶片的病害的严重度控制在18%以下，将期病害的严重度降低了20个百分比。关键词：马铃薯早疫病流行用药策略孢子捕捉Potatoearlyblightepidemicruleandchemicalcont
3、rolfieldexperimenAnimalandplantquarantine:LINLonglongcounselingteacher:HUTongle（Themodernuniversityofscienceandtechnology，Agriculturaluniversityofhebei，baodingHebei071000）Abstract:thepotatoesearlyblightisveryseriousinvariousgraininrecentyears,sowehadainvestigationforthepotat
4、oesearlyblightwhichhappenedinhebeiprovinceZhangBeiXianXiSunGouinthecityofzhangjiakou,andclassfieddifferentlearninginvestigationofdrugscreeningteststrategys.Theresultsshowthat:Betweenjulyandaugustwhentherainyseasontemperatureandhumiditywhichtriggerdiseaseeasily.Iftherainistoo
5、much,mistordewisheavy,andmorestormduringthistime,thediseasewillbeheavy.Especiallyinthehightemperature,droughtconditions,especiallyindryandwetweatherappearalternately,theearlyblightwilloccurandprevalrapidly.Potatoswhichareintheseedlingstagetothedegreeofthebuddingchildwillbeli
6、ghtwithearlyblight,whichisnotmorethan5%,untilthebeginningfloweringthediseasebegantogrowheavily,andafterthisperioditwillbeheavysharplywhichincreasetomorethan50%;Pleasebegintousedrugoncefinddiseasespottocontroltheseverityofthediseaseoftheupperandmiddleleavesbelow10%,andinthisw
7、aytheseverityofthediseasewillreduce10percentagepoints.Theseverityofdiseaseofthelowerleavesshouldbecontrolldeunder18%,thentheseverityofdiseasewillreduce20percentagepoints.Keywords：potatoes，Earlyblight,Prevalentpopulation,Drugstrategy,Catchingspores目录1引言.......................
8、..............................51.1马铃薯的起源...................................
