Abstract: In order to study the effects of tillage and saline leaching on root growth and morphological characteristics of rice, a field experiment was conducted. Winter ploughing did not affect the growth of roots, and multiple salt leaching significantly promoted the growth of rice roots, and mainly increased the root dry weight and root length. Winter tillage combined with salt washing changed the root architecture of rice and significantly increased total root length, root surface area. The diameter of root system was decreased , mainly increased root length in the diameter 0 ~ 0.1mm due to winter tillage combined with salt washing. The yield of rice increased by 79% compared with the control, and the yield of paddy rice was significantly increased by winter-tillage combined with salt washing, which was 92% higher than that of the control.

Key words: rice, root, tillage, salt washing, saline-alkali soil

摘要： 采用大田试验，研究了耕作及洗盐对盐碱地水稻根系生长以及形态特性的影响。结果表明，冬耕处理并没有影响根系的生长，而洗盐处理明显促进了水稻根系的生长，根系干质量和根系长度明显增加。冬耕结合洗盐处理改变了根系的构型，显著增加了根系的长度、根表面积，降低了根系的直径，显著增加了直径在0~0.1 mm之间根系的长度。洗盐处理明显促进了水稻产量的增加，与不耕作不洗盐处理相比增产79%，冬耕结合洗盐处理显著增升了水稻的产量，与不耕作不洗盐处理相比增产92%。

关键词: 水稻, 根系, 耕作, 洗盐, 盐碱地