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为研究柽柳的防风固沙作用,对引种的8个柽柳种(其他省市引入5个种,美国引入3个种)和本地的甘蒙柽柳以及短穗柽柳在关中地区进行种植试验,测定不同柽柳种的生长指标(成活率、株高、地径和冠幅),分析其在关中地区的生长适应性。经方差分析和LSD多重比较表明,不同柽柳种在成活率、株高、地径以及冠幅上差异显著。根据株高聚类分析的情况,10个柽柳种被明显的分为了3类;在50d的测量中地径和株高呈现极显著的正相关关系;通过比较3个生长指标,无叶柽柳适应性极差,扦插后第2年即全部死亡。密花柽柳、多花柽柳、白花柽柳和多枝柽柳等引自其他省市的4个种生长情况一般;混花柽柳在株高地径表现出的生长情况较好,最后一次测量,株高为62cm,地径为4.3cm,但冠幅生长量较少,仅400cm2;和本地种甘蒙柽柳及短穗柽柳相比较,只有引种自美国的红花多枝柽柳在3个指标上都表现出较明显的优势,在最后一次测量时,株高为72cm,地径为4.2cm,冠幅则达到了4 500cm2,适宜引种。
In order to study the windbreak and sand fixation of Tamarix chinensis, eight Tamarix species (five species introduced in other provinces and three species introduced in the United States), and the native species Tamarix ramosissima The growth index (survival rate, plant height, diameter and crown width) of different species were analyzed and their growth adaptability in Guanzhong area was analyzed. Analysis of variance and multiple comparisons of LSD showed that there were significant differences in survival rate, plant height, ground diameter and crown width among different species of Tamarix. According to the cluster analysis of plant height, 10 species of Tamarix chinensis were apparently divided into 3 classes. There was a significant positive correlation between soil diameter and plant height in 50 days. By comparing 3 growth indexes, Extremely poor, all died in the second year after cutting. The growth of four species such as Tamarix chinensis, Tamarix ramosissima, Tamarix ramosissima and Tamarix ramosissima from other provinces and cities was generally good. The growth of Tamarix ramosissima showed a good growth in the plant height and the height of the plant was 62cm, diameter of 4.3cm, but fewer crown growth, only 400cm2; and the native species Ganoderma lucidum and short ear tamarisk compared to only introduced from the United States safflower Tamarix showed in all three indicators More obvious advantages, in the last measurement, the height of 72cm, diameter of 4.2cm, the crown reached 4 500cm2, suitable for introduction.