桂林市银杏绿化调查与分析

Survey and Analysis of Ginkgo Greening in Guilin City

2019年10月~2020年10月对桂林市城区的银杏绿化林带进行调查分析,在桂林市区以老城区的桂林站为中心分别在东、南、西、北设11个调查样区。结果:样区1(广西师大雁山校区Ⅰ)、样区8(桂林西站广场)两个正常管理的样区定植成活率分别达97.65%和97.38%,显著优于粗放管理的样区2(广西师大雁山校区Ⅱ)、样区4(龙门大桥西段)二个样区的成活率;从植株生长势分析认为,样区1(广西师大雁山校区Ⅰ)正常管理,其植株生长势达一、二级的植株所占比例为100%,显著优于其他10个样区,其10个样区的植株生长势一、二级的所占的比例只在1.93%~66.70%之间。结论:银杏幼树移栽的第一年必须加强水肥管理,第二、三年开始施入粒状硫酸钾复合肥,每年施肥两次,如按其方法施肥管理,定植株成活后的第一年植株根部将生长出大量的营养根,第二、三年植株生长迅速,长势旺盛。

From October 2019 to October 2020,the ginkgo green forest belt of Guilin has 11 survey areas in the east,the south,the west and the north areas.Results:The survival rate of planting in Zone 1(Dayan Campus)and 8(Guilin West Station Square)reached 97.65%and 97.38%respectively,It is significantly better than the survival rate of two sampledistricts 2(Guangxi Division,Guangxi Dayan Mountain Campus)and 4(West Section of Longmen Bridge);From the analysis of the plant growth potential,Example District 1(Guangxi Division Dayan Mountain Campus)normal management,The proportion of primary and secondary plants is 100%,Significantly superior to the 10 other sample zones,The proportion of the plant growth potential of grades I and II in its 10 samples is only between 1.93%~66.70%.Conclusion:Water and fertilizer management must be strengthened in the first year of ginkgo seedling transplanting.In the second and three years,granular potassium sulfate compound fertilizer is applied twice a year.According to itsmethod,the roots of the plant will grow a large number of nutrients,and grow rapidly in the second and three years.