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坡地培埂、修梯田是建设基本农田、保持水土的一项主要措施。但培埂修梯田后耕作面积将有所减少。据我站资料,如果在10度坡耕地上修成田面宽15～20米的梯田,坎埂占地为5.4～6.1％,如果在15度坡耕地上修成田面宽12～15米的梯田,坎埂占地为8.8～9.1％。 以甘肃省天水地区为例,全区耕地面积893万多亩,其中山地815.7万亩,培埂修梯田后,即使按最小占地面积5％计算,全区仅埂坎占地即达41万亩;若计算黄土高原的埂坎占地面积,其数字就更加惊人可观了。如何发挥这些土地的生产潜力,让它给人们
Slope cultivation, repair terraces is the construction of basic farmland, to maintain a major measure of water and soil. However, after cultivating the terrace, the cultivated area will be reduced. According to the data of our station, if the terraces of 15-20 meters in width are cultivated on the 10 degrees of slope land, the area of the ridge is 5.4-6.1%. If the terraces of 12-15 meters in width are cultivated on 15 degrees of slope farmland , Kandy covers an area of 8.8 ~ 9.1%. Taking Tianshui Prefecture in Gansu Province as an example, the entire area covers 8,930,000 mu of arable land, of which 8,157 mu is a mountainous area. After cultivating the terraced rice fields, even if the minimum land area is 5% Mu. If the area of the ridge of the Loess Plateau is calculated, the figure is even more impressive. How to give full play to the productive potential of these lands and give them to people