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祁连山北麓海拔1,700—2,600米冷凉灌溉春麦区位居甘肃省河西走廊南部。粮食作物播种面积323万亩,占河西地区的44.4％。小麦播种面积210万(其中90％以上为春小麦),占河西地区的42.8％。长期以来,由于本区存在着“粗、薄、旱、草”四大限制因素。因此,小麦产量低而不稳,成为河西地区的低产拉腿地区。1980年,本区小麦平均亩产只有178.1公斤,分别比河西沙漠沿线地区和河西平川地区小麦平均亩产247.5公斤和301.8公斤低28％和40.9％。因此,这一问题的解决成为加速发展河西春小麦生产的关键所在。为了尽快改变本区春小麦的低产面貌,自1981年以来,先后开展了大量科学考察,试验研究和示范推广工作。在此基础上,提出并逐步完善了“祁连山北麓海拔1.700—2,600米冷凉灌区春小麦栽培技术体系”(以下简称高产栽培技术体系)。经1984—1986年大面
The northern foot of the Qilian Mountains 1,700-2,600 meters above sea level cold spring irrigation area located in the southern Hexi Corridor, Gansu Province. The sown area of food crops was 3.23 million mu, accounting for 44.4% of the Hexi area. Wheat sown area of 2.1 million (of which more than 90% of spring wheat), accounting for Hexi area 42.8%. For a long time, due to the existence of the “crude, thin, drought, grass” four major constraints in this area. Therefore, low and unstable wheat yield, a low yield Leg area in Hexi. In 1980, the average yield of wheat in this area was only 178.1 kg, 28% and 40.9% lower than the average yield of wheat of 247.5 kg and 301.8 kg in the Hexi Desert and Hexi Hirakawa areas respectively. Therefore, the solution of this issue has become the key to accelerate the development of Hexi spring wheat production. In order to change the low-yielding appearance of spring wheat in this area as soon as possible, a great deal of scientific investigation, experimental research and demonstration and popularization work have been carried out since 1981. On this basis, put forward and gradually improve the “Qilian Mountain north of 1.700-2,600 meters above sea level irrigation system of spring wheat cultivation technology system” (hereinafter referred to as high-yield cultivation technology system). After 1984-1986 large