论文部分内容阅读
本文于乌兰布和沙漠东北边缘，对沙拐枣等５种灌木１１个种源区的苗期生长进行了种源定点试验。同时对５个树种苗期生长的差异也进行了对比分析试验。在９２、９４年进行两个重复观测，通过对高生长量、地径生长量的方差分析，多重比较和ｔ检验的结果表明：各树种最佳种源分别是：花棒、（磴口、民勤）；羊柴：（榆林）；柠条：（民勤、凉城）；梭梭：（磴口）；沙拐枣：（民勤）。各树种高生长的种间排序为：花棒＞沙拐枣＞羊柴＞梭梭＞柠条。地径生长排序为：沙拐枣＞花棒＞羊柴＞梭梭＞柠条。
In this paper, the northeastern margin of the Ulan Buh Desert, the provenances of five shrubs such as Calligonum juveniles were planted in 11 provenances at seedling stage. At the same time, the differences of seedling growth of five tree species were also analyzed comparatively. Two repeated observations were conducted in 1992 and 1994. The results of variance analysis, multiple comparisons and t-tests of height growth, diameter growth, and t-test showed that the best provenances for each tree species were flower buds, Minqin); sheep Chai: (Yulin); Caragana: (Minqin, Liangcheng); Haloxacin: (磴 mouth); Shagu jujube: (Minqin). The interspecific order of high growth of each species is: Hualien> Calligonum> Sheepwood> Haloxylon ammodendron> Caragana korshinskii. The order of the growth of soil diameter is as follows: Calligonum pekinensis> Hualian> Sheep wood> Haloxylon ammodendron> Caragana korshinskii.