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本研究选择当地的表土、心土和黄河泥沙为研究对象,设置不同厚度覆土处理持续监测玉米的形态指标(株高、基径、叶面积)。试验结果表明:覆土不小于70 cm的处理(表土至少30cm)生长前期以径粗生长为主,后期株高、叶面积逐渐发育,玉米径粗较粗,株高叶面积发育良好,有利于植株的生长。同时考虑引黄河泥沙充填复垦技术施工土方量较少的原则,70 cm(表土至少30 cm)厚度是能保证玉米正常生长的最薄覆土厚度。
In this study, local topsoil, heart and soil and the Yellow River sediment were selected as the research object. Morphological indexes (plant height, base diameter and leaf area) of maize were set up with different thickness of soil covering treatment. The results showed that: the diameter of the soil was not less than 70 cm (topsoil at least 30 cm) in the early growth stage with coarse diameter growth, the late plant height, leaf area gradually developed, coarser diameter crude corn, high leaf area developed well, is conducive to plant Growth. At the same time, taking into account the principle that the earthwork volume of the Yellow River sediment reclamation and reclamation technology is relatively small, the thickness of 70 cm (topsoil at least 30 cm) is the thinnest soil thickness that can ensure the normal growth of corn.