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我国山多平原少,人多可耕地面积少,在山区兴建水平梯田,变荒山为良田,是增加耕地面积的一个重要方面。而许多荒山又是山高坡陡,石多土少,尤其是南方石头山多。经营石碴地,可能是我国增加耕地面积,建设基本农田的一项重要措施。石碴地是由各项建设开挖石料后剩余的石碴与少量土壤组成。通过1990年～1991年对郧西天河口石碴地和199年～1992年对浙川寺岭石碴地的农业生产观察试验,石碴地具有雨水易进难出,进多出少的特性,抗旱能力强,通过分析对比,产量较高。它在旱年有较强的抗旱能力。丰水年,易排水,而不易受渍。石碴地开垦后,如能不断补充农家肥,可持续高产,成为稳产高产的当家地,是开发山区,建设水库农村移民安置区和脱贫致富的重要途径之一。山区农家肥可结合发展畜牧业,种植绿肥和秸杆还田等措施积攒。
There are few mountains and plains in our country, and there are few people with more arable land. The construction of horizontal terraces in the mountainous areas and turning the barren hills into fertile fields are an important aspect of increasing cultivated land. And many barren hills and steep slopes, stone more soil less, especially in the southern stone mountain. Operating ballast, may be China’s increase in arable land, building basic farmland is an important measure. The ballast is composed of the remaining ballast and a small amount of soil after the excavation of stone materials. From 1990 to 1991 on the Yunhe Tianhe mouth ballast and 199 years to 1992 on the Zhechuan Temple Ridge ballast land of agricultural production test, the ballast with rain easy to enter, into more less features, drought Strong ability, through analysis and comparison, higher yield. It has strong drought resistance in drought years. Watery year, easy to drain, but not susceptible to stains. After the reclamation of ballast, it is one of the important ways to develop mountainous areas, build rural resettlement areas for reservoirs and to get rid of poverty if rich peasant manure can be continuously produced with high yield and sustainable yield. Mountain manure can be combined with the development of animal husbandry, planting green manure and straw and other measures to save.