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黄陵地处延安南部旱原,耕地24万余亩。其中小麦12万亩,90％以上耕地无灌溉条件,小麦生产年度降雨量12年平均622.5毫米,年平均气温9.4℃,有利于冬小麦生长。但是,单产低,1949—82年34年中亩产过百斤的只有11年。为了提高旱原小麦产量,我们在无灌溉条件下,坚持以正茬为主,从抓麦田培肥入手,针对“薄”、“粗”、“旱”进行了试验和调查。
Huangling is located in southern Yan’an drylands, more than 240,000 acres of arable land. Among them, 120,000 mu of wheat and 90% of cultivated land have no irrigation conditions. The annual rainfall of wheat in the past 12 years is 622.5 millimeters on average, and the annual average temperature is 9.4 ℃, which is beneficial to the growth of winter wheat. However, with a low yield, only 11 years of per-kilogram per mu were produced in 1949-82. In order to improve the wheat yield in the dry land, under the condition of no irrigation, we persisted in using the positive crop as the mainstay, started from grasping the wheat field to cultivate fertilizer and conducted experiments and investigations on “thin”, “rough” and “dry”.