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杏子川位于安塞县境内杏子河流域,无霜期150天左右,年降雨量500至600毫米,种植春玉米一般一年一熟,基本上可以代表延安地区黄土高原丘陵沟壑区的条件。近几年来,生产条件有所改变,目前玉米平均亩产为500至700斤,根据我们和社员一起开展的玉米丰产栽培试验(多数试验是一年结果),以及当地群众生产经验,提出如下栽培技术。一、深耕整地,增施底肥。这是获得玉米高产的基础,深耕可加深耕作层,改善土壤结构,促进根系向土壤深层发展,增强对水分、养分的吸收和抗倒能力。因此在秋作物收获后应及早耕翻,开春解冻后耙耱保墒,没有秋翻的应及早春耕,随耕随耙随耱,防止跑墒。
Apricot River is located in the basin of Apricot River, Ansai County, frost-free period of about 150 days, the annual rainfall of 500 to 600 mm, the planting of spring corn generally a year, basically representing the Yanan area loess plateau hilly conditions. In recent years, the production conditions have changed. At present, the average per mu yield of corn is 500 to 700 jin. According to the high yield cultivation trials of maize we conducted with the members (most of the tests are one year results) and the experiences of the local masses, we propose the following cultivation technology. First, plowing the land preparation, increase base fertilizer. This is the basis for obtaining high yield of corn. Deep plowing can deepen the tillage layer, improve the soil structure, promote the development of roots to the deep soil, and enhance the absorption and lodging resistance to moisture and nutrients. Therefore, after harvesting autumn crops should be plowed as soon as possible, open spring thaw rake 耱 preserving moisture, there is no autumn turn early spring, with farming with rake to prevent running moisture.