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为探讨不同杨树品种、不同栽植深度、不同栽植时间的秋季带叶栽植效果,以便进行综合评定、选择最优组合,我们于1986年秋季,在邢、邯、唐、秦四地、市进行了试验研究,取得了一致的结果。现将邢台试区情况报告如下。一、试验地概况和苗木规格试验地设在沙河市赞善乡下郑村,位于大沙河中游南岸冲积沙地,面积100亩.上层80厘米为细沙土,下层为沙壤土。地下水位10米,无灌溉条件,属于干旱沙地类型。苗木规格:二年生毛白杨、沙兰杨、山海关杨带干苗木,胸径分别为1.7、1.3、1.1厘米左右;苗高分别为3.3、3.1、2.8米左右.二、试验内容和方法1.试验内容:通过当年新根增生量,翌年成活率、抽干率、新梢生长量及二年后胸径生长量等衡量指标,分析不同品种、深度和时间的带叶秋栽效果。2.设计定法:采用三因素三水平正交设计,按L_9(3~4)正交表安排试验,如表1.
In order to discuss the effect of planting yellow leaves in autumn with different poplar varieties, different planting depths and different planting times in order to make a comprehensive evaluation and select the optimal combination, we conducted the autumn, autumn, autumn and winter in Xing, Han, Tang and Qin cities The experimental study has achieved consistent results. Xingtai pilot area now report as follows. First, the general situation of the experiment and seedling specifications Test ground is located in Zheng village, Shahe City, Zheng Village, located in the south bank of Dasha River alluvial sand, an area of 100 acres. 80 cm upper layer of fine sand, the lower sandy loam. Groundwater level of 10 meters, no irrigation conditions, belong to the type of arid sand. Seedlings specifications: biennial Populus tomentosa, Yang Shan, Shanhaiguan Yang with dry seedlings, diameter at breast height were 1.7,1.3,1.1 cm respectively; seedlings were 3.3,3.1,2.8 meters respectively. Second, the test content and methods 1. Test content : Through the new year root growth, the survival rate the following year, the pumping rate, shoot growth and diameter growth after two years, and other indicators to analyze the different varieties, depth and time of leaf fall planted with the effect. 2. Design method: The three-factor three-level orthogonal design, according to L_9 (3 ~ 4) orthogonal table arrangement test, as shown in Table 1.