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兰州军区山丹军马场,是夹在祁连山和大黄山之间的广阔高原,海拔2500—3300米。它自汉朝开始即被辟为牧马基地,放牧历史比较悠久。实行农牧结合,发展农业生产,只是解放以后的事;种植春小麦,是在五十年代末期才开始的。因为这里温度低,雨水少,地瘠薄,所以种植春小麦时,实行合理密植,从而夺取高产,就成了生产上的一个重要环节。回顾我场春麦的种植历史,播种量、每亩留苗数是有很大变化的。在试种之初,亩播
Lanzhou Military Region Shandan Jun Racecourse, is sandwiched between the Qilian Mountains and Huangshan vast plateau, 2500-3300 meters above sea level. Since the beginning of the Han Dynasty, it has been turned into a Wrangler base, grazing history has a long history. The combination of agriculture and animal husbandry and the development of agricultural production are only things after liberation. Cultivating spring wheat began only in the late 1950s. Because here the temperature is low, less rain, infertility and infertility, so when planting spring wheat, the implementation of close planting density, so as to seize high yield, has become an important part of production. Review my field of spring wheat planting history, seeding rate, there is a lot of changes in the number of leaves per acre. At the beginning of the trial, mu sowing