城市园林绿化植物养护技术规范（Technical code for maintenance of urban landscaping plants）.docVIP

城市园林绿化植物养护技术规范（Technical code for maintenance of urban landscaping plants） The fifth chapter is about the technical specifications of city landscaping plant maintenance 1 General Provisions This specification is applicable to maintenance technology within the administrative area of the provinces public green space, protection green land, scenic woodland, residential green space, attached green space, road green of trees, flowers, and grass and other plants to be. For plants that have been planted for more than one year, the preservation rate shall be 98%, except for natural disasters or environmental pollution. 2 conservation of trees 2.1 tree conservation Tree protection should carry out prevention before cure spirit, make people realize the protection of trees, is everyones responsibility. Do a good job of prevention of natural disasters. The wounds on the tree should be cleaned, disinfected with chemicals, coated with protective agents or plaster, so as to achieve early treatment, prevent expansion. Found that the tree hole should be repaired in time, to prevent further expansion of the rot; the rotten parts should be treated by surgical methods. 2.2 irrigation and drainage All types of green land should be provided with a complete irrigation and drainage system. According to different tree species and different site conditions, suitable and appropriate irrigation should be carried out to keep the effective moisture in the soil. Water and air humidity requirements of higher tree species, in early morning or evening watering, conditional spraying of leaves. Before watering, you should loosen the soil and make a cofferdam to do the water well. Early and late summer watering; winter watering should be at noon. Watering should be done at once, especially in spring and summer. Water flow can not be too fast, to prevent surface runoff. For valuable trees, introduced trees and newly planted trees, spray the trunks and trees according to the weather, drought and plant gr