论文部分内容阅读
高粱是一种喜温耐早的作物,主要分布在温暖地区,自赤道至高纬度均有栽培。欧洲到48°N,北美到45°N,中国东北地区到48°N的地方皆有栽培。中国高粱主要分布在辽宁、河北、山东、吉林、黑龙江、山西、河南等七省,约占全国高粱面积的80%。凡全年大于15℃的活动积温在1600℃以上,大于15℃的持续日数在85天以上的地区,均为高粱的适宜种植区。全国可分五个气候特点不同的种
Sorghum is a thermophilic and early crop that is mainly distributed in warm areas and cultivated from the equator to the highest latitudes. Europe to 48 ° N, North America to 45 ° N, and northeastern China to 48 ° N. China’s sorghum is mainly distributed in Liaoning, Hebei, Shandong, Jilin, Heilongjiang, Shanxi, Henan provinces, accounting for about 80% of the country’s sorghum area. Where the annual accumulated temperature above 15 ℃ is above 1600 ℃ and the continuous days above 15 ℃ are above 85 days, all are the suitable planting areas for sorghum. The country can be divided into five different types of climate characteristics