掺沙对南雄牛肝土田的改良效果初报

A Preliminary Report on Soil Improvement Effect of Adding Sand to Clay Soil

摘要: 为了探索解决南雄牛肝土田土壤粘重、烤烟前期生长发育缓慢、肥料利用率低等问题的方法，对牛肝土田进行了耕层0～15 cm 掺沙的土壤改良试验。结果表明，粘重的牛肝土田掺沙可以改变土壤机械组成和土壤质地，有效改善烟株的生长环境，加快烟株前期生长速度，提高烟叶的产量和产值，值得推广应用。

Abstract: In order to find out the solution for the problem of heavy cows liver field, such as slow growth in the early days, low fertilizer utilization rate, we conducted a soil improvement experiment by mixing sand to soil in cows liver field. The results showed that mixing sand to heavy cows liver field could change soil texture, effectively improve growing environment of tobacco plant, improve the speed of growth tobacco plants, and improve the yield and the value of tobacco, thus it is worthy of popularizing.