Big tree planting structure in coastal saline-alkali land

Abstract

The invention relates to a big tree planting structure in a coastal saline-alkali land. The big tree planting structure includes a tree pit, and a thin film layer is arranged on the inner side wall ofthe tree pit; a water seepage layer is arranged at the bottom of the tree pit, and the water seepage layer includes a blind pipe drain and a salt discharge blind pipe, a stone chip layer and a non-woven fabric layer; the blind pipe drain is arranged at the bottom of the tree pit, the salt discharge blind pipe is inclinedly arranged in the blind pipe drain, the stone chip layer is arranged above asalt drainage drain, and the non-woven fabric layer is arranged above the stone chip layer; a big tree plant is arranged in the tree pit, and the position between a soil ball and the tree pit is filled with improved soil; a top barrier assembly is arranged at the top of the tree pit, the top barrier assembly includes cofferdam, a middle sand layer and a bark layer; the cofferdam is arranged on the outer periphery, close to the earth surface, of the tree pit; the middle sand layer is laid in the cofferdam and above the improved soil and the earth ball; and the bark layer is laid in the cofferdam and above the middle sand layer. The big tree planting structure has a good barrier function to salt, and a better living environment can be provided for big tree plants.

Description

technical field [0001] The invention relates to a large tree planting method, in particular to a large tree planting structure in coastal saline-alkali land. Background technique [0002] Because the soil in coastal areas is often soaked by seawater, the salt content is high, and too much soluble salts accumulate on the soil surface or in the soil, resulting in soil salinization in coastal areas, forming coastal saline-alkali soil, which seriously affects plant growth and land resource utilization. . [0003] In order to effectively utilize the land resources of coastal saline-alkali land, the society has invested a lot of manpower and material resources in research. For example, the Chinese invention patent application with the patent application publication number CN108293482A discloses a planting structure and planting method in deserts, sandy lands, and saline-alkali lands. The non-toxic nano-calcium carbonate layer has both high water retention and anti-seepage perfor...

AI Technical Summary

Problems solved by technology

[0004] At present, there is a problem when this planting structure is applied to plant large trees in coastal saline-alkali land. The coastal area is blazing with sunshine. Although the hydrophobic nano-calcium carbonate layer can reduce water penetration to the bottom and surrounding areas, the dried salt on the surface is still easy to be blown into the trees. pits, which infiltrate through the top of tree pits and affect the growth of trees

Images