Afforestation method for promoting rapid rooting of ultra-deep planted ulmus pumila stems in arid sandy land

Abstract

The invention relates to an afforestation method for promoting rapid rooting of ultra-deep planted ulmus pumila stems in arid sandy land. Before sprouting in spring, 1-2-year-old ulmus pumila seedlings with the ground diameter of 1.0-1.5 cm and the tree height of 1.5-2.0 m are temporarily planted near afforestation land; the 55-65 cm parts in height of the stems of the seedlings are soaked in water 2-3 days before afforestation; semi-girdling is carried out on a plurality of parts of the stems of the seedlings; semi-girdling wounds of the stems are smeared by using rooting agent paste, and airing is carried out until the rooting agent paste is adhered to the stems of the seedlings; the rooting agent paste contains a rooting agent and water-soluble cellulose; pits are dug in the afforestation land, the diameter of the pits is 15-20 cm, the depth of the pits is 55-65 cm, the seedlings coated with the rooting agent paste are put into the pits, soil backfilling is carried out until the soil surfaces in the pits are 2-12 cm lower than the soil surfaces outside the pits, and fish-scale pits are built. By the adoption of the method, the survival rate of the ulmus pumila ultra-deep planting afforestation in the arid sandy land reaches 95% (45% or above higher than that of a conventional method), the rooting rate and the growth rate are increased by 15% or above compared with those of seedlings planted through the conventional method, and the seedlings grow vigorously.

Description

technical field [0001] The invention relates to a seedling cultivation technique in arid sandy land, in particular to an afforestation method for promoting the rapid rooting of the stems of Ulmus elm super-deep planted in arid sandy land. Background technique [0002] In arid sandy land, since the deep soil often contains more and stable water content, the root system of the seedlings is directly planted in the deep soil, so that it can absorb the water contained in the deep soil for a long time and stably, thereby maintaining the survival and growth of the seedlings needed. However, in the rainy season, the rainfall makes the shallow soil water quickly replenished, and it is difficult to penetrate into the deep soil, and it is difficult for the root system of the seedlings in the deep soil to obtain sufficient water, which leads to slow growth. If the deeply buried stem of the seedling (the stem is located above the root system) can be rooted quickly, not only can the surv...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems in the prior art, the present invention provides a method of afforestation that promotes the rapid rooting of Ulmus elm stems planted ultra-deeply in arid sandy land, and is used to solve the problem of infiltration due to rainfall The root system of ultra-deep planted seedlings cannot absorb enough water caused by the deep soil, which threatens the survival of seedlings and inhibits the growth of technical problems

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