盐碱土上马蔺的生长特点和渗透调节能力研究

摘要/Abstract

摘要： 以马蔺为材料，研究了马蔺在松嫩平原盐碱地生长的特性和渗透调节能力。结果表明：马蔺在7~8月份生长速率较快，其平均株高为50~90cm，分蘖枝为5~8个，生物量为47.2 g/株。8月份以后生物量逐渐减小。马蔺的生长过程呈Ｓ型曲线变化。生物量干重增重过程大致分为缓慢、快速和停止生长3个生长阶段。马蔺叶片中Na+、K+和脯氨酸的含量随着盐碱度的变化而改变，盐碱度较大，即pH高的月份，马蔺叶片中Na+、K+和脯氨酸的含量也同样增加, 叶片细胞的膜透性增强。渗透调节物质的增加，降低了叶片水势，维持了细胞膨压，保持了马蔺在盐碱土的正常生长。

Abstract: A study was conducted to determine growth characteristics, capacity of osmotic adjustment of Iris Lactea Pall. var Chinensis Koidz grown in salt-alkali soil of Songnen plain in China. Iris grew more rapid on July and August, plant height is 50~90cm, and has 5~8 branches. The biomass per plant is 47.2g/plant during growth and development period. The process of Iris growth is divided three stages: slow growth stage, rapid growth stage and stop growth stage. Substances of osmotic adjustment were analyzed to determine the capacity of osmotic adjustment and adaptation in Iris leaves. Accumulation of Na+, K+, proline concentration and improvement of cell membrane penetration were conducted to adjusted very rapidly to salt and alkali content during each month. With the accumulation osmotic substances, water potentials and osmotic potentials in Iris leaves decreased, cell turgid pressure increased or maintained to preserve cell, leaf and then whole plant growth under salt and drought condition.

黄忠文,孙广玉,张庆红. 盐碱土上马蔺的生长特点和渗透调节能力研究[J]. 中国农学通报, 2005, 21(12): 199-199.

Huang Zhongwen, Sun Guangyu, Zhang Qinghong. Studies on Growth Characteristics and Osmotic Adjustment of Iris Lactea Pall. var ChinensisKoidz Grown in Salt-Alkali soil[J]. Chinese Agricultural Science Bulletin, 2005, 21(12): 199-199.

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