一、研究依据和目的小麦是我省的主要粮食作物之一,历年种植面积约5800万亩,占全省耕地面积的二分之一,产量占粮食总产量的三分之一以上.小麦收成好坏,在全省粮食生产中有举足轻重的地位.七十年代初期,我省小麦平均产量不足200斤,高产单位徘徊在六、七百斤.上不去的主要原因是对高产品种的生育规律和外界环境条件的关系认识不足.随着生产条件的不断改善,土壤肥力和小麦产量的不断提 I. BASIS AND TARGETS Wheat is one of the main grain crops in our province, with an annual planting area of ​​about 58 million mu, accounting for one-half of the total cultivated area of ​​the province and accounting for more than one third of the total grain output. Good and bad, in the province’s grain production plays a decisive role.In the early seventies, the average yield of wheat in our province less than 200 pounds, high-yielding units hovering in the six, seven hundred jin .. Not go up mainly because of the fertility of high-yielding varieties Lack of understanding of the relationship between the law and the external environmental conditions.With the continuous improvement of production conditions, soil fertility and wheat yield continued to mention