摘要
为探究内蒙古田间影响燕麦叶斑病的因素,采用正交试验设计对燕麦品种、播期、种植密度、施氮量、施磷量和灌水量6个因素及其组合于2009—2011年进行连续3年的重复试验,运用逐步回归法对3年试验数据进行分析,探讨不同因素及其组合对燕麦叶斑病的影响。正交方差和分析表明,播期和品种是影响燕麦叶斑病的主要因素,方差贡献率分别为78.69%和12.20%;而施氮量、施磷量和灌水量对燕麦叶斑病发生程度均无显著影响。拟合分析获得燕麦叶斑病发生程度与播期(x_(2))、品种(x_(1))和种植密度(x_(3))之间的非线性回归方程为y=51.99-6.45x_(2)-0.39x_(1)x_(3),表明适当推迟播期、选择抗性较高的燕麦品种且相对密植可减轻燕麦叶斑病的发生程度。
To identify the agricultural factors affecting oat leaf spot in the field in Inner Mongolia,effects of six elements(varieties,sowing date,planting density,nitrogen amount,phosphorus amount and irrigation amount)were analyzed using an orthogonal experimental design in three successive years from 2009 to 2011.The orthogonal ANOVA showed that planting date and variety were the main influencing factors on oat leaf spot disease,accounting for 78.69%and 12.20%of total variance.Nitrogen,phosphorus,and irrigation amounts showed negligible impact on the severity of oat leaf spot disease.The fitting analysis results showed that varieties,sowing date,and planting density significantly affected the disease severity,which fit the nonlinear regression equation y=51.99-6.45x_(2)-0.39x_(1)x_(3).Therefore,present study indicated that the severity of oat leaf spot disease could be controlled by planting resistant varieties with high density,as well as delaying the sowing date.
作者
刘万友
吕世杰
孙雪梅
东保柱
周洪友
张笑宇
Liu Wanyou;LüShijie;Sun Xuemei;Dong Baozhu;Zhou Hongyou;Zhang Xiaoyu(College of Horticulture and Plant Protection,Inner Mongolia Agricultural University,Hohhot 010019,Inner Mongolia Autonomous Region,China;College of Science,Inner Mongolia Agricultural University,Hohhot 010018,Inner Mongolia Autonomous Region,China)
出处
《植物保护学报》
CAS
CSCD
北大核心
2022年第2期553-558,共6页
Journal of Plant Protection
基金
财政部和农业农村部国家现代农业(燕麦荞麦)产业技术体系(CARS-07-C-3)。
关键词
燕麦叶斑病
逐步回归分析
互作效应
种植密度
播期
oat leaf spot
stepwise regression analysis
interaction effect
planting density
sowing date
