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首页> 外文期刊>Journal of Agrometeorology >Climate variability impacts on wheat productivity in central Punjab
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Climate variability impacts on wheat productivity in central Punjab

机译:气候变化对旁遮普中部小麦生产力的影响

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摘要

Long-term (1970-71 to 2014-15) climatic variability analysis during wheat growing period of Ludhiana indicated significant increasing trend in minimum temperature (0.06 degrees C year(-1)) and decreasing trend in sunshine hours (0.03 hrs day(-1)) and wind speed (0.03 km hr(-1)). Lower minimum temperature, relative humidity, rainfall and number of rainy days during the reproductive growth period of wheat covering the months of February and March have been found favourable for higher grain yield. Multiple regression model developed between weather parameters during critical periods and grain yield of wheat explained 81% variation in wheat productivity. Verification of this model for three years depicted under-estimation of wheat yield between 4-8%.
机译:卢迪亚纳小麦生育期的长期(1970-71至2014-15)气候变化分析表明,最低温度(0.06摄氏度(-1))显着增加,而日照时间(0.03 hrs(- 1))和风速(0.03 km hr(-1))。较低的最低温度,相对湿度,降雨和2月和3月两个月小麦生殖生长期间的雨天数被发现有利于提高谷物单产。在关键时期的天气参数与小麦单产之间建立的多元回归模型解释了小麦生产力的81%变化。对该模型的三年验证表明,小麦单产被低估了4-8%。

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