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四川省现有旱坡地近5000万亩,其中坡度10度以上的占63%,水土流失严重,生产效益之低在全国都是少有的,这对四川省现代化农业的发展极为不利。在各级政府领导下,全省开展农田基本建设,已改梯地近2000万亩,取得了显著的经济效益。各地在改土中较为重视工程质量,梯埂牢固,梯面平整,外观整齐,同时也考虑了渠系、道路的配置,但由于部分地区不重视把改形与培肥相结合,改了两三年增产效果不显著,发挥不了梯田的优势。七十年代中期以来,我们先后在简阳、剑阁、射洪、南充、岳池、巴县、长寿、江北、北碚等县区开展了农田建设的科学试验,现将紫色砂泥岩区改土培肥的一些问题介绍如下:
There are nearly 50 million mu of arable slopes in Sichuan Province, of which 63% are slopes of over 10 degrees. Severe soil and water loss and low production efficiency are rare across the country, which is extremely unfavorable to the development of modern agriculture in Sichuan Province. Under the leadership of governments at all levels, the province has started farmland capital construction and has already changed the land to nearly 20 million mu and achieved remarkable economic benefits. Various places in the soil improvement pay more attention to the quality of the project, ladder 埂 solid, ladder smooth, neat appearance, but also considered the canal system, the configuration of roads, but in some areas do not attach importance to the combination of reform and fertilization, changed two Three-year yield increase effect is not significant, can not play the advantages of terraces. Since the mid-1970s, we conducted scientific experiments in farmland construction in the counties of Jianyang, Jiange, Shehong, Nanchong, Yuechi, Baxian, Changshou, Jiangbei and Beibei, Some of the problems described below: