辽宁阜新地区热量资源特征变化对农业的影响

分析热量资源趋势变化,为农业产业结构调整,增加农业经济收入服务。结果表明,阜新地区热量资源增加趋势明显。≥0℃初日趋势提前12d,间隔日数趋势增加17d,积温趋势增加396℃;≥10℃初日趋势提前7d,终日趋势后推9d,间隔日数趋势增加15d,积温趋势增加350℃;终霜日期趋势提前10d,初霜日期趋势后推12d,无霜期趋势延长23d。热量资源的增加,一方面对调整农作物品种结构、发展设施农业、改变农业措施、提高复种指数,增加农业经济收入十分有利;另一方面,使农业病虫越冬界限北移,虫源基数增加;热量增加也将导致土壤潜在蒸散增大,降水利用率减小,使农业生产环境恶化,旱地农业、灌溉农业受到威胁。可以说气候变暖热量增加对农业生产的影响利弊共存。

Effects of Characteristics Change of Regional Energy Resources in Fuxin on Agriculture

The trend of energy resources,changes in industrial structure adjustment of agriculture,increase agricultural income and services.The results showed that increased heat resources in Fuxin region was evident.≥ 0 ℃ early days ahead of time 12 d,interval number of days the trend increase in 17 d,accumulated temperature trend of increasing 396 ℃.≥ 10 ℃ early days ahead of time 7 d,all day long the trend of pushing 9 d,interval number of days the trend increase in 15 d,accumulated temperature trend of increasing 350 ℃;last frost date trends advance 10 d,after the first frost date trends push 12 d,frost-free period to extend the trend of 23 d.Energy resources to increase the one hand,the structure adjustment of crop varieties,development of agricultural facilities,to change agricultural practices,enhance multiple cropping index is very beneficial to increase agricultural income.On the other hand,limits agricultural pests overwinter north,Insect base increase;heat increase will also lead to increased soil potential evapotranspiration,precipitation efficiency decreases,so that environmental degradation of agricultural production,dryland agriculture,irrigated agriculture was threatened.It can be said to increase the heat warming impact on agricultural production advantages and disadvantages.