首页> 中文期刊> 《西部林业科学》 >柴达木盆地不同盐生境下黑果枸杞形态结构比较

柴达木盆地不同盐生境下黑果枸杞形态结构比较

         

摘要

对柴达木盆地5个盐生境的黑果枸杞进行了形态结构比较,探讨黑果枸杞为适应环境的响应。结果表明,不同盐分生境植株形态特征差异明显。全盐含量高、 K+含量高、 Cl-/SO42-毫克当量比大的氯化物-硫酸盐型土壤中植株高大,冠幅小而紧凑,叶片长条形,横切面圆形,高度肉质化,叶肉栅栏组织形成“环栅型”结构,叶脉不明显,无叶柄,枝刺尖利、坚硬;全盐含量低、 Na+含量高、 Cl-/SO42-毫克当量比值小的硫酸盐-氯化物型土壤中植株形态反之。但人工栽培后, K+为主, Cl-/SO42-毫克当量比大的硫酸盐-氯化物型土壤中植株较高,叶变为披针形,栅栏组织呈条形,叶脉明显,具短小叶柄,枝刺变长、变软。%For understanding the morphological structure changes of Lycium ruthenium to adapt to the environment , the plant morphological structure and soil salt of L.ruthenium which grew at 5 different environment was studied in Qaidam Basin.The results showed that the plant morphological characteristics under different saline environment were significantly different.The high salt content, high content of K+, Cl-/SO4 2-mEq ratio and chloride-sulfate in the soil plant tall, the crown was small and compact, the leaf shape was long and thin strip, the transver sesection was circular , leaves became highly succulent , palisade tissue in mesophyll was “ring fence” type structure , leaf veins were not obviously, no petiole, branches were sharp, hard branch spines; Low salt content, high content of Na+and small Cl-/SO4 2-mEq ratio, type of sulfate-chloride in soil , the plant was contrary to the above.How-ever, after artificial cultivation, in high content of K+, high Cl-/SO4 2-mEq ratio, type of sulfate-chloride in soil, the plant was higher, lanceolate leaf with white short nap, normal palisade tissue structure with obvious veins, short petiole, longer and soft thorn.

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