干旱区哈密瓜生长和产量与气候要素的关系

农业是气候变化最敏感的领域之一,气候变化将对农作物产量产生巨大影响.探讨气候变化对干旱区哈密瓜(Cucumis melo L.)生长和产量的影响,明确关键影响气象因子,可为合理有效利用气候资源和防灾减灾提供科学依据.选取1981—2019年哈密瓜生长年气候因子、生长季内气象要素和1999—2019年发育期及产量资料,分...

Relationship between Climate Factors and Growth and Yield of Hami Melon(Cucumis melo L.)in Arid Region

Agriculture is one of the most sensitive departments for climate change,and climate warming has a huge impact on agricultural production.On the basis of providing material and energy,the climate factors also restrict the yield and quality of crops.Taking Hami melon(Cucumis melo L.)as the object of study,the climatic factors of year and monthly meteorological factors of growth season,the development period and yield data of Hami melon from 1981 to 2019 were selected,to analyze the characteristics of climate change and its influence on development period and yield of Hami melon.The variation characteristics of climatic factors during the growth season of Hami melon were revealed,such as temperature,ground temperature,precipitation,and sunshine hours.The interannual variability of development period and yield of Hami melon were also analyzed.The results show that,the changes of mean temperature,mean ground temperature,sunshine hours of year and monthly scale showed a significant upward trend in the last 40 years.Temperature,ground temperature and≥20℃accumulated temperature are the key factors affecting the change of development period of Hami melon in arid region.Climate change causes the Hami melon to advance significantly from sowing stage to fruit setting stage,the mature stage is delayed,and the whole growth period is not significantly prolonged.The effect of heat conditions in June and July on the climate yield of Hami melon is remarkable in arid region.The increase of mean temperature and sunshine hours is beneficial to the formation of climate yield of Hami melon,but the adverse effect of the increase of average maximum temperature on the yield should be avoided.