【摘要】 利用宁夏中部干旱带代表区域盐池县、同心县35年的气候资料,分析温度、降水量对玉米气象产量的影响,结果表明:同心县、盐池县玉米产量与玉米孕穗期、灌浆期降水量显著相关;玉米气象产量随降水量的变化曲线为抛物线形式,开口向下;全生育期内玉米气象产量受前期高温影响会有所减产,但中后期的低温影响会造成玉米明显减产。更多还原

【Abstract】 The effects of temperature and precipitation on meteorological yield of maize were analyzed using the climatic data during past 35years of the typical areas of the Middle Arid Zone of Ningxia such as Yanchi county and Tongxin county.The result shows that the yields of maize in Yanchi and Tongxin county are significantly correlated with the precipitation during booting stage and grain filling stage of maize;the change curve of the meteorological yield of maize along with the change of precipitation was parabolic form with downward opening;the meteorological yield of maize during the whole growth period would decreased somewhat when affected by high temperature at the early stage and would decreased significantly when affected by low temperature at middle and late stage.更多还原