【摘 要】
：
Huang-Huai winter wheat region mainly includes central and south of Hebei, all of Shandong province, most of Henan, north area of Huaihe River in Jiangsu and Anhui, south and central of Shanxi, which
【机 构】
：
Institute of Crop Science, Chinese Academy of Agricultural Sciences / Key Laboratory of Crop Physiol
【出 处】
：
第十七次全国小麦栽培科学学术研讨会
论文部分内容阅读
Huang-Huai winter wheat region mainly includes central and south of Hebei, all of Shandong province, most of Henan, north area of Huaihe River in Jiangsu and Anhui, south and central of Shanxi, which are the most important wheat producing areas.In these places, the main planting pattern is double cropping system, the wheat area accounts for about 50% of the countrys planting area, annual precipitation is 520-980 mm, which unevenly distributed among seasons,mostly concentrated in June, July and August, accounting for 60% of annual precipitation.
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