【摘要】 研究表明,气象因子与小麦产量密切相关。在与小麦产量相关的35个气象因子中有12个因子的相关系数达到了显著水平;其中灌浆期降水与冬小麦产量呈极显著相关,且直接通径系数最高,对小麦产量形成的贡献率最大;其次是拔节期降水量和返青期降水量;5月份的蒸发量与冬小麦产量密切相关,达到极显著水平,其对小麦产量形成起较大的负向作用;小麦越冬期间的气温也是不可忽视的气象因素。据此,在制定小麦生产管理计划时,应将以上因素作为考虑的重点。更多还原

【Abstract】 It was indicated that winter wheat yield was closely related to meteorological factors.Among the 35 meteorological factors related to wheat yield,the correlative coefficients of 12 factors with yield were significant.The precipitation during milking stage,which was significantly correlated(at α0.01 level) with winter wheat yield,had the highest path coefficient,and contributed the most to wheat yield establishment.The second and third factors were the precipitations in jointing and stem elongating stage.Closely related to winter wheat yield,the evaporation in May were significantly correlated with the yield at α0.01 level,showing significant negative effect on wheat yield establishment.Additionally,the soil temperature in the winter was also a very important meteorological factor affecting winter wheat yield.Therefore,the above mentioned factors should be emphasized when making wheat production and management plan.更多还原