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十年来,我们在商丘县大吴庄大队与群众一道,用机引深耕犁在1,000多亩盐碱地上作了60厘米深耕压绿肥试验。结果证明,这种做法是改良表层积盐的花碱地的重要措施,特别是对初具排水条件的表层碱化瓦碱地的改良效果尤为显著。许多盐碱地变成好地,有些地段全年亩产达千斤。一、深耕压绿肥的改碱作用(一)减轻土壤盐碱危害。深耕后迅速改变了土体盐分的垂直分布状况,使土体盐分由“T”字形变成“1”字形。再经掩青培肥和改善耕层结构,就巩固了深耕脱盐
In the past ten years, we worked with the masses in Dawuzhuang Brigade, Shangqiu County, to test the 60 cm deep plow green manure on a 1,000-acre saline-alkali plot using a deep-plow machine. The results show that this method is an important measure to improve the surface area of salt-rich spermine, especially for the initial drainage conditions of the surface of the base of alkaline tile to improve the effect is particularly significant. Many of the saline-alkali lands have become well-developed, with some areas producing over a thousand pounds of mu per year. First, plowing the role of alkali greening manure (A) to reduce soil salinity hazards. Deep plowing quickly changed the vertical distribution of soil salt, soil salt from the “T” shape into a “1” shape. Subsoiling green manure and improve the structure of tillage, to consolidate deep plowing desalination