沈阳东陵区作物生长季热量资源趋势变化研究

Study on Trend Variation of Heat Resources in Crop Growth Season in Dongling District of Shenyang

对沈阳东陵区≥10℃初日、初霜日、作物生长季活动积温的历年趋势变化进行了分析。结果表明,1951～2008年,沈阳东陵区作物的适宜播期可提前5～6d,收获期初霜冻日期有后延趋势,作物生长季活动积温趋势增加290℃。

The trend variation of the first day with temperature of ≥10 ℃,the first frost date and the active accumulated temperature in crop growth season in Dongling district of Shenyang were analyzed.The results showed that the suitable sowing date of crops in Dongling district of Shenyang could be advanced 5-6 d,and the first frost date in harvest period showed delay trend,the active accumulated temperature in crop growth season was increased by 290 ℃.