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黄河中游地区除夏熟作物为冬麦或春麦外,秋熟作物主要是玉米、高粱、糜谷、洋芋等各种杂粮,技术作物分布面积很少。而在这些秋熟作物中,中耕作物占很大比重。例如玉米在天水等地约占40%,高粱在秦安等地占39%强,洋芋由于单位面积产量高,种植面积又占20%左右,所以成为甘肃中部地区群众的主要食粮之一。如果按照被复差、冲刷量大等原因,把谷子也划入中耕作物的话(据绥德水土保持科学试
In the middle reaches of the Yellow River, in addition to summer crop or summer spring crop, the autumn crop is mainly corn, sorghum, Mi Gu, potato and other miscellaneous grains. The area of technical crops is very small. In these autumn crops, cultivated crops account for a large proportion. For example, corn accounts for about 40% of the total in Tianshui and other places. Sorghum accounts for 39% of the total in Qinan and other places. Due to the high yield per unit area and the planting area of about 20%, potato becomes one of the main foodstuffs for the masses in central Gansu Province. If according to being poor, large amount of erosion and other reasons, the millet is also included in the cultivation of crops (according to Suide Soil and Water Conservation Science Test