我国人民在长期生产实践中,积累了丰富的植树经验。早在唐朝时,有一位号称郭橐驼的老农,专以种树为业,他所栽的树没有不活的,并且生长茂盛,结实又早又多。当时文学家柳宗元曾写了一篇《种树郭橐驼传》,总结了他的植树方法,简明扼要地概括为十六个字:“其本欲舒,其培欲平,其土欲故,其筑欲密。”意思是说,栽树时,要使 In the long-term production practice, our people have accumulated rich experience in planting trees. As early as the Tang dynasty, an old peasant named Guo Tuo camel exclusively to plant trees. The tree he planted did not live in inactivity and flourished. At that time, the writer Liu Zongyuan had written an article entitled “Planting Camel Tuo” and summed up his method of tree planting, concisely summed up as 16 words: The building wants dense. "The meaning is that when planting trees, to make