关中旱原麦田面积约占全省三分之一以上,是我省旱地小麦主产区,小麦能否稳产丰收对全省粮食增产具有重要意义。这里,影响小麦大面积稳产丰收的症结是旱、薄、粗(干旱、地力瘠薄、耕作栽培粗放)。由于小麦生长发育所需要的水分全赖天然降水,因此,“水”的供、需矛盾就成了稳产丰收的主要矛盾。 Guanzhong dryland wheat field area accounts for more than one third of the province, is the main producing areas of wheat in dry land in our province, wheat can yield a steady yield of the province’s grain production is of great significance. Here, the crux that affects the stability of large-scale and stable yield of wheat is dry, thin and coarse (arid, poorly fertilized and extensive farming). As the water required for the growth and development of wheat relies on natural precipitation, the contradiction between the supply and the demand of water has become the major contradiction of steady and good harvest.