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鉴于塔里木沙漠公路沿线必须用高矿化度咸水进行灌溉的实际,通过对3种主要固沙植物在6个盐分梯度下叶绿素含量的实验,研究了叶绿素含量与盐胁迫的关系.结果显示:(1)植物叶片中叶绿素含量随着盐胁迫强度的增加而减少;(2)从植物叶绿素含量在不同盐分区间的变化看,3种灌木叶绿素含量均出现2次明显的下降,表明这几种植物对盐分的增加有一个适应的过程;(3)结合实验结果和植物长势的调查,将每种不同植物在不同胁迫程度下的盐分水平进行了划分,为沙漠公路防护林体系建设和可持续管护提供理论支持.
In view of the fact that irrigation along the Tarim Desert Highway must be conducted with high salinity saline water, the relationship between chlorophyll content and salt stress was studied through experiments on the chlorophyll content of three major sand-fixing plants under the six salt gradients. 1) The chlorophyll content of plant leaves decreased with the increase of salt stress intensity. (2) From the changes of plant chlorophyll content in different salt regimes, the chlorophyll content of the three shrubs decreased obviously twice, indicating that these plants (3) According to the investigation of the experimental results and the growth of plants, the salt levels of different plants under different stress levels were divided into three parts, which were the construction of the shelterbelt system and the sustainable management of desert highway Provide theoretical support.