A kind of high-efficiency cultivation system and cultivation method of shell sand native willow seedlings

Abstract

The invention relates to the technical field of nursery stock cultivation and in particular to an efficient cultivation system for Periploca sepium Bunge nursery stocks in original habitat of shell sand and a cultivation method thereof. The efficient cultivation system for Periploca sepium Bunge nursery stocks in original habitat of shell sand, taking a seedling land in the original habitat of shell sand as a treatment object, and is characterized by comprising the steps of: constructing wind erosion-preventing fences around the seedling land; excavating shell sand holes which are 60cm deep; paving 12cm thick shells, the grain sizes of the original habitat of which are greater than 2.0mm, and shells with undecomposed surfaces in a coastal zone in the bottoms of the shell sand holes; paving filling bricks made from decomposable non-woven fabrics which are 8cm thick on the upper layer of the shells; and paving 40 cm thick mixed shell sand soil on the upper layer of the filling bricks. The system provided by the invention is high in technical operability, low in cost and suitable for being implemented in a wide shell sand habitat. According to a simple, effective and easily operated principle, the system provided by the invention is in particular suitable for an anti-drought hardening-seedling technology of root-accelerating growth of efficient cultivation of nursery stock cultivation in original habitat of shell sand.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of nursery stock cultivation, in particular to a shell sand native willow seedling cultivation system and a cultivation method thereof. [0003] (2) Background technology [0004] The shells and their debris after the death of shellfish in the intertidal zone are eroded by seawater, carried by waves, and accumulated near the high tide line to form a unique geological landform, which is the shell embankment. There are two shell embankments distributed in the Yellow River Delta, connecting to the north with the shell embankments in Tianjin and Hebei, forming a unique shell beach ridge zone in China. The shell embankments, together with the shell embankments in St. Louisiana, USA and Suriname, South America, are also known as the world's three major ancient The shell embankment is the world's largest shell embankment with coexistence of old and new, and occupies an extremely important position in the ...

AI Technical Summary

Problems solved by technology

The phreatic ridge zone of the shell bank has shallow phreatic burial depth and high mineralization, high evaporation ratio, and lack of fresh water resources. Soil moisture is the dominant factor affecting the vegetation distribution pattern and limiting plant growth and development in the shell bank beach ridge zone. In addition, the frequency of seasonal drought The increasing trend of the degree of turbidity and degree is obvious, which makes it difficult to restore the vegetation of the shrub forest in this area, especially the cultivation of seedlings and the growth of planted seedlings, and it is difficult to play its ecological protection function, resulting in serious degradation of the shell embankment ecosystem.

[0006] At present, there are mainly difficulties in the reproduction of plant seedlings, low survival rate and preservation rate in the beach ridge area of ​​shell banks, resulting in low vegetation coverage and low structure and function of shelterbelts in the muddy coastal zone.

Afforestation by traditional direct sowing or planting seedlings, affected by drought, water shortage and wind erosion, the plant materials have poor adaptability to the special habitat of shell sand, resulting in low survival rate and preservation rate of planted seedlings or sown seedlings, especially willow The underdeveloped root system of the seedlings will easily cause the seedlings of willow willow to be subjected to drought stress, resulting in high mortality and difficult to form an effective stand

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