摘要
分析掌握1960～2009年新民市霜期变化规律,调整农业布局改革旧的耕作制度,充分利用气候资源增加农业经济收益。在Excel程序支持下,采用线性函数分析霜期趋势变化。结果表明,新民市终霜日期趋势提前21d;初霜日期趋势推后10d;无霜期趋势延长32d。在近30年里,霜灾情下降为0。无霜期延长热量资源增加。在无霜期稳定延长的情况下,可适当考虑增加复种指数改变以往的耕作模式,引进生育期较长的作物,使热量资源得到充分发挥,创造经济效益。
The variation laws of frost stage in Xinmin City from 1960 to 2009 were analyzed.The agricultural layout was adjusted and the old farming system was reformed.The climate resources were made full use to increase agricultural economic benefits.Under the support of Excel program,a linear function was used to analyze the trend changes of frost stage.The results showed that the last frost date trends in Xinmin advanced 21 d.The first frost date trends postponed 10 d.The frost-free period trend prolonged 32 d.Frost disaster in recent 30 years reduced to zero.The frost-free period prolonged and heat resources increased.Under the conditions that frost-free period prolonged stably,some measures can be considered,including increasing the multiple cropping index,changing the old farming patterns,introducing the crops with longer growth period,so as to play full roles of heat resources and create economic benefits.
出处
《安徽农业科学》
CAS
北大核心
2010年第22期11929-11930,11932,共3页
Journal of Anhui Agricultural Sciences
关键词
无霜期
趋势变化
农业
影响
新民市
Frost-free period
Change in trend
Agriculture
Effect
Xinmin City
作者简介
于万军（1964-），男，辽宁北票人，工程师，从事应用气象工作。
