边坡地马尾松不同覆盖直播育苗生长观测及苗高生长动态分析  

Observation on Seedling Growth of Pinus massoniana with Different Mulching and Dynamic Analysis of Seedling Height Growth on Slope Land

作　　者：肖忠优 欧斌[1] 邓必平 王盼 朱江华[1] 李远章 Xiao Zhongyou;Ou Bin;Deng Biping;Wang Pan;Zhu Jianghua;Li Yuanzhang(Jiangxi environmental engineering vocational college,Ganzhou Jiangxi 341000;Senyuan technology seed farm of Ganzhou,Anyuan Jiangxi 342100)

机构地区：[1]江西环境工程职业学院,江西赣州341000 [2]赣州市森源科技种苗场,江西安远342100

出　　处：《中国林副特产》2020年第5期15-17,20,共4页Forest By-product and Speciality in China

基　　金：江西省教育厅科技项目(GJJ181238);江西省赣州市科技项目(201303)。

摘　　要：为了提高边坡陡坡地马尾松直播造林成活率、保存率和苗高生长量,对马尾松直播种子进行不同覆盖处理(稻草、木屑、对照),对不同处理的成活率、保存率以及苗高生长量进行调查分析。结果表明:经过覆盖处理的马尾松直播苗成活率、1年苗高生长量、2年苗高生长量均高于对照组,马尾松直播苗的保存率恰好相反,未经覆盖处理的对照组要高于经覆盖处理组,说明覆盖处理有利于提高马尾松直播苗的成活率和苗高生长量,但对保存率有一定的负面影响。覆盖稻草有利于提高马尾松直播苗的成活率和保存率,覆盖木屑则反之,覆盖稻草和木屑均有助于提高1年苗高生长量和2年苗高生长量,但覆盖稻草比覆盖木屑对提高苗高生长量的效果更显著。采用Logistic方程对马尾松直播苗1年生苗高生长规律进行动态模拟,相关系数达到0.98以上,速生期占整个生长期的50%以上,速生期内苗高生长量占总生长量的60%以上,速生期对整个生长期苗木的生长量起决定性作用。In order to improve survival rate,survival rate and seedling height growth of Pinus massoniana direct seeding on steep slope land,different mulching treatments(rice straw,Sawdust,control)were carried out,the survival rate,survival rate and seedling height growth of different treatments were investigated and analyzed.The results showed that the survival rate,seedling height growth in one year and seedling height growth in two years after mulching treatment were all higher than those in the control group,on the contrary,the survival rate of direct seeding of Pinus massoniana was higher in the control group without mulching than in the control group,but it has a negative effect on the preservation rate.The survival rate and survival rate of direct seeding seedlings of Pinus massoniana were improved by covering with Rice Straw,whereas the survival rate and survival rate of direct seeding seedlings of Pinus massoniana were improved by covering with Sawdust,but the effect of covering rice straw was more significant than that of covering sawdust.Logistic Equation was used to simulate the growth law of seedling height of 1-year-old direct-seeding Pinus massoniana.The Correlation Coefficient was over 0.98,the growth rate of seedling height in fast-growing period accounted for over 50%of the whole growth period,and the growth rate of seedling height in fast-growing period accounted for over 60%of the total growth,the fast growing period plays a decisive role in the growth quantity of the whole growing period.

关 键 词：边坡复绿 马尾松 直播造林 覆盖处理 成活率 保存率 

分 类 号：S791.248[农业科学—林木遗传育种]