冬前积温对河北省中南部麦区冬小麦适宜播期的影响

以黄淮冬麦区的邯郸、石家庄、衡水和北部冬麦区的保定1997—2006年期间的小麦冬前积温为依据，采用积温指标法对冬小麦的适宜播期进行了研究。结果表明，邯郸市冬小麦的适宜播期为10月9日—18日；石家庄市冬小麦的适宜播期为10月6日—15日；衡水市冬小麦的适宜播期为10月3日—12日；保定市冬小麦的适宜播期为10月2日—11日。初步认为，在选择适宜品种的基础上，黄淮冬麦区北部冬小麦适宜播期为10月3日—18日，北部冬麦区南部冬小麦适宜播期为10月2日—11日。

Effect of Per-winter Positive Accumulated Temperature on Suitable Planting Dates of Winter Wheat in South Centre Area of Hebei

Based on per-winter positive accumulated temperature in three regions of Huang-Huai Winter Wheat Area and Baoding of northern winter wheat area during 1997-2006, the suitable planting dates of winter wheat were preliminarily studied. The results showed that the suitable planting dates of different regions were as follows: Handan was between October 8 and October 18; Shijiazhuang was between October 5 and October 15; Hengshui was between October 2 and October 12; Baoding was between October 1 and October 11. As a result, it is considered that the suitable painting dates of winter wheat are between October 5 and October 12 in the north area of Huang-Huai winter wheat area，and between October 1 and October 11 in the south area of northern winter wheat area.