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干旱地区降水量少,尤其是夏季,气温高,日照时间长且强度大,加上降水量少,大树移栽就是一大问题,对园林雷竞技建设带来极大的影响,所以园林雷竞技一般选择在春秋两季进行。随着我国园林雷竞技建设的迅速发展,干旱地区更应该加强园林雷竞技建设。干旱地区大树移栽可以遵循一定的技巧,我们根据多年的大树移栽经验,总结出了几点大树移栽技巧。大树移栽技巧要从大树移栽的准备工作开始。   一、 准备   1、干旱地区晴天气温较高,容易引起树木失水萎芫,影响成活率,因此应选择阴天或早晚气温相对较低时进行。   2、在起挖前要根据树木的大小及外形进行修剪。   二、挖掘   1、确定土球直径:一般要求土球直径为树木胸径的7至10倍,土球厚度为直径的2/3。   2、挖掘:挖掘时要遵循一定的技巧,保证大树根系的完整。   三、包装   采用木箱、麻(草)包、草绳等材料,一般常用草绳网络状捆扎法。具体做法是:先用草绳(最好是湿润过的)将土球横腰缠绕,宽度占土球厚度的1/3,然后将草绳系于树干或腰箍上,上下交叉环绕呈网络状,捆扎时一定要捆紧捆实。   四、吊运   大树移栽过程中,吊运是十分关键的一步。大树吊运要对树苗进行必要的处理,保证根系及树干完整。   干旱地区大树移栽技巧   五、栽植   栽植坑的挖掘要与起挖树木同时或提前进行,栽植坑的直径要比土球直径大30至40厘米,比土球厚度深20至30厘米,有条件的要在树穴底部施基肥,树木入穴定位后要哦及时拆除包装,草绳、麻袋等易腐烂的包装物剪断剪碎即可,实际操作中草绳一般不做处理。在埋土时要分层夯实,有条件的边填土边浇水,填土高度一般要高于树干基部10厘米左右,踩实围堰,立即浇水。   六、养护管理   大树移栽的养护管理直接影响大树移栽的成活率,是影响大树移栽质量的重要因素之一。大树移栽后要进行养护管理,提高大树移栽苗木的成活率。
The transplantation of big trees in arid area of Baoding afforestation has less precipitation. Especially in summer, the temperature is high, the sunshine time is long and the intensity is strong. With less precipitation, the transplantation of big trees is a major problem, which has a great impact on the construction of landscape greening. Therefore, landscape greening usually takes place in spring and autumn. With the rapid development of landscape greening construction in China, the construction of landscape greening should be strengthened in arid areas. The transplanting of big trees in arid areas can follow certain techniques. Based on many years'experience of transplanting big trees, we summarized several techniques of transplanting big trees. The technique of big tree transplanting should begin with the preparation of big tree transplanting. 1. Prepare 1. High temperature in clear weather in arid areas can easily cause water loss and wilting of trees, which will affect the survival rate. Therefore, cloudy days or relatively low temperature in the morning and evening should be chosen. 2. Before excavation, trees should be pruned according to their size and shape. 2. Digging 1. Determining the diameter of the earth balls: It is generally required that the diameter of the earth balls be 7 to 10 times the diameter of trees at breast height and that the thickness of the earth balls be 2/3 of the diameter. 2. Digging: Digging should follow certain skills to ensure the integrity of the root system of big trees. 3. Packing materials such as wooden cases, hemp (straw) bags and straw ropes are used, and straw rope network binding method is commonly used. Specific practice is: first use straw rope (preferably wet) to wrap the balls around the waist, the width of which is 1/3 of the thickness of the balls, and then tie the straw rope to the trunk or waist hoop, the upper and lower cross-encirclement is network-like, and must be tied tightly when binding. 4. Lifting is a key step in the process of transplanting large trees. In order to ensure the integrity of roots and trunks, it is necessary to deal with seedlings when large trees are hoisted. Tree Transplanting Techniques in arid areas 5. The excavation of planting pits should be carried out at the same time or in advance with the excavation of trees. The diameter of planting pits is 30 to 40 centimeters larger than the diameter of earth balls and 20 to 30 centimeters deeper than the thickness of earth balls. Base fertilizer should be applied at the bottom of tree caves when conditions permit. After locating trees in caves, timely removal of packages, cutting and cutting of perishable packages such as straw ropes and hemp bags can be done. In practice, straw rope is usually not treated. When burying soil, it should be layered and compacted, watered while filling soil under conditions. The height of filling soil is generally about 10 centimeters higher than the base of tree trunk. Step on the cofferdam and water immediately. 6. Maintenance and management of big tree transplantation directly affects the survival rate of big tree transplantation, and is one of the important factors affecting the quality of big tree transplantation. Maintenance and management should be carried out after transplanting big trees to improve the survival rate of transplanted seedlings.