陇东黄土高原沟壑区号称甘肃粮仓,耕地面积的55％在塬面,塬面地平土厚,但以往粮食产量长期徘徊在200斤左右。山坡耕地占总耕地的39％,其坡度陡,水土流失严重,粮食亩产仅100斤左右。粮食单产不高,增长速度不快,原因是多方面的。为了探讨该地区尽快提高粮食产量的农业技术措施,有关科研单位多年来曾进行深耕试 Longdong loess plateau gully area known as Gansu granary, 55% of arable land in the plateau, plateau surface soil thick, but in the past the long-term food output hovering around 200 pounds. Hillside cultivated land accounts for 39% of the total cultivated land, with steep slope and serious water and soil loss. Grain output per mu is only about 100 kg. Yield per unit of grain is not high, the growth rate is not fast, for many reasons. In order to explore agricultural technology measures to increase food production in the area as soon as possible, relevant scientific research units have conducted deep plowing tests over the years