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旱地小麦主要分布在淮河以北广大北方麦区,大致分为两个类型区,即年降水量在600 mm以上的半湿润地区和年降水量400~500 mm的半干旱地区。半湿润地区一般可一年两熟,如山东、河南等实行小麦—玉米—小麦种植模式,而半干旱地区一般只能一年一熟,如西北黄土高原区。由于受自然条件限制及其他因素影响,旱地小麦的产量较低,影响小麦总产的提高。旱地小麦生产条件特点:一是生长季节降水少;二是往往旱薄相连、肥力不足限制了有限降水的利用;三是耕作管理
The dryland wheat is mainly distributed in the northern northern part of the Huaihe River, which is broadly divided into two types of areas, namely semi-humid areas with annual precipitation above 600 mm and semi-arid areas with annual rainfall from 400 to 500 mm. Semi-humid areas generally can be twice a year, such as Shandong, Henan and other wheat - corn - wheat planting patterns, and semi-arid areas generally only one year a year, such as the Northwest Loess Plateau. Due to natural conditions and other factors, the output of dryland wheat is lower, affecting the increase of total wheat output. Characteristics of dryland wheat production conditions: First, less precipitation during the growing season; second, often connected dry and weak, lack of fertility limited the use of limited precipitation; Third, tillage management