芦苇微咸水适宜灌溉模式研究

Reasonable Irrigation Model of Reed under Saline Water Irrigation

以湿地芦苇生产区为研究背景，设置单因素和双因素交互作用试验。基于数理统计方法讨论了不同灌溉水盐度和水位深度对芦苇植株高度、基茎粗和产量的影响。单因素试验表明：芦苇基茎粗呈平缓降低趋势，低盐度范围内芦苇株高变化趋势不明显，高盐度抑制芦苇生长，采用小于0．9％盐度的水灌溉芦苇对其产量影响不显著；芦苇的株高和基茎粗随水位升高而增加，高水位范围内株高增长不明显，灌溉水层保持在20～25cm芦苇长势较好。因此，从双因素交互作用分析结果中可以得出结论：盐度和水深均是制约芦苇生长和产量的重要因子。采用盐度上限0．9％，水层深度20～25cm咸淡水混合灌溉模式比较理想。

Based on the Phargmites Communis production areas in wetland and the sole-factor and the double-factor experiment, the effect of different salt stress and different water depth on the plant height, stem diameter and yield of reed were studied, through the theory of mathematical statistic. Sole-factor experiment showed that the stem diameter decrease slowly and the plant height varied unobvious with low salt stress, but on high level it was depressed. Yield of reed didn＇t decrease with less than 0.9% water salinity irrigation water; the plant height and the stem diameter increase with the water depth increase, but the plant height grow unobvious in high water depth. Reed grew better in 20 water depth. The result indicated that using salinity maximum 0.9%,water depth from 20 to 25 cm, saline water is a reasonable irrigation model.