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在旱作农业区,各项技术都是围绕如何蓄住天上水,保住土壤水,为农业生产创造条件。一、坡改梯与高产栽培模式坡改梯在我国古代就被劳动人民应用于保持水土和提高农业产量的重要措施之一。现在仍然是农田基本建设的重要内容。通过坡改梯,使田面由有一定坡度的斜面变成水平面。雨水有了更多的时间渗入到土壤中,坡改梯还加厚了土层,一般在中雨或大雨的情况下,大部分雨水都能渗入蓄积在土壤中。
In dry farming areas, various technologies focus on how to save Tianshui, keep soil water and create conditions for agricultural production. First, slope to ladder and high-yield cultivation mode slope to ladder in ancient China was used by working people to maintain soil and water and improve agricultural production is one of the important measures. It is still an important part of farmland infrastructure. Through the slope to change the ladder, so that the surface of the slope by a certain gradient into a horizontal surface. Rain more time to infiltrate into the soil, slope to ladder also thickened the soil, usually in the case of moderate rain or heavy rain, most of the rainwater infiltration can accumulate in the soil.