摘要
为揭示冬小麦冠层温度对产量作用的实质,探索影响二者关系的相关因素,以10个冬小麦品种(系)为材料,在喷灌和地面灌溉两种灌溉条件下,对子粒灌浆各阶段的冠层温度进行了方差分析,并对冠层温度与小麦产量进行了相关性分析。结果表明,在两种灌溉条件下,基因型和子粒灌浆时期对冠层温度的影响均达极显著水平(P<0.01);不同子粒灌浆时期的冬小麦冠层温度和产量之间均显示不同程度的负相关,其相关系数都是中后期>中期>前期。在喷灌条件下,只有灌浆中后期冠层温度和产量的相关系数达到极显著水平,灌浆前期和中期的相关系数均不显著;而在地面灌溉条件下,灌浆前、中、中后期的冠层温度和产量之间均达到极显著负相关。说明冬小麦冠层温度不仅受基因型影响,还受灌浆时期和环境条件影响。
To reveal the relation between winter wheat canopy temperature and yield and explore the factors that matter,10 wheat cultivars were used as the experimental materials to analyze the variance of canopy temperature at different grain filling stages and the correlation analysis was performed based on the means of two different irrigation methods which were sprinkling irrigation and ground irrigation.The results showed that both genotype and grain filling stage influenced canopy temperature significantly（P〈0.01）.The canopy temperature and yield of different genotypes at different grain filling stages were negative correlation in some different degree.The correlation coefficients of canopy temperature with yield of grain filling prophase or metaphase weren＇t significant except for grain filling mid-anaphase by sprinkling irrigation,but all the correlation coefficients between canopy temperature and yield of three grain filling stages were significantly negative if managed by manpower watering.These results indicated that the canopy temperature was affected by genotype,grain filling stages and environment as well.
出处
《作物杂志》
CSCD
北大核心
2010年第6期51-54,共4页
Crops
基金
国家科技支撑计划项目子专题(2007BAC15B03)
关键词
冬小麦
灌浆期
冠层温度
产量
相关分析
Winter wheat
Grain-filling stage
Canopy temperature
Grain yield
Correlation analysis
