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侧柏一般春季造林,冬季造林成活率很低,徐州地区多年来采用雨季造林,都很成功。为了进一步了解侧柏造林的最适时期,及造林后其生根发叶与气温的关系,我们从1980年7月至1981年6月在邳县占城果园进行了观察研究。现将初步结果报告于下: 一、研究方法 造林地设在占城果园汪庄工区,土质为砂壤土,PH7.5。用3年生苗木随挖穴、随栽植。栽植分7次进行,每次10—20株,栽成两行,一行观察生根情况,一行观察发叶情况。 生根观察 首先每次将新栽幼树的第一行按顺序编号。过一阶段时期把第一号幼树挖起,在清水中洗净根部,用40倍扩大镜观察根部有无变化,并作记载,然后把幼树栽在原处。再隔一段时间,把第二号幼树挖起,用同样方法进行观察记载。这样顺次进行下去,直到幼树发出新根时停止。 发叶观察 在第一次新栽幼树的第二行内,随意选择3株编号,作为观察标准树。在
Arborvitae afforestation in general spring, winter afforestation survival rate is very low, Xuzhou area rainforest afforestation for many years, are very successful. In order to further understand the optimal period of afforestation and the relationship between the leaf temperature and the rooting temperature after afforestation, we observed and studied the peach orchard in Jiaxian County from July 1980 to June 1981. Now the preliminary results are reported below: First, the research methods Afforestation site is located in the Wang Zhuang work area in the city orchards, soil is sandy loam, PH7.5. With 3-year-old seedlings digging, with planting. Planting points 7 times, each 10-20 strains, planted into two lines, his party observed the rooting situation, his party observed the leaf status. Rooting observation First, the first line of newly planted saplings is numbered sequentially. After a period of time to dig the first sapling, wash the roots in clean water, with 40 magnifying glass to observe whether there is any change in the root, and make records, and planted the saplings in place. After some time, the second young tree dug up, using the same method for observation records. Do this in sequence until the sapling gives off a new root. Leaf foliage observation In the first line of the newly planted saplings in the second line, choose 3 random number, as the observation standard tree. in