小麦灌浆期间冠层温度与产量关系研究

试验于2001～2003年选用我国河北、河南、山东、陕西、安徽、江苏6省的8个小麦品种在河南省种植，并选用河南省3个品种(系)安排了播期播量试验，对不同品种、不同播期、不同播量的小麦灌浆期冠层温度与小麦产量及产量构成三因素进行相关分析和通径分析。结果表明：在河南省生态条件下，不同品种和不同播期的小麦灌浆期间冠层温度差异达到极显著，不同播量的小麦灌浆期间冠层温度差异达到显著。小麦灌浆期间冠层温度与小麦产量及产量构成三因素有着密切的相关关系。小麦冠层温度指标可为选用品种和采取栽培技术措施提高产量提供参考依据。

Study on connection between Wheat Canopy Temperature and Yield in filling stage

Planted eight breeds of wheat from six different provinces of China: Henan province, Hebei province, Shandong province, Shanxi province, Anhui province and Jiangshu province in Henan province from 2001 to 2003, and experimented with three breeds (new varieties) of Henan province in sowing period and density. Accordingly to correlation and path analysis between wheat canopy temperature in the filling stage and yield and three components. The results showed that in Henan ecology condition there were deeply significant diversities in diverse breeds and sowing periods of wheat canopy temperature and there were significant diversities in diverse density of wheat canopy temperature in the period of filling stage. Wheat canopy temperature in different stage of filling periods had close correlation with wheat yield and three components of yield , so that it gave us the foundation in using cultivars and planting technological steps to control canopy temperature accordingly to improve yield.