Nursery stock growing method for Pinus sylvestris on sand

Abstract

The invention relates to a seedling growing method, in particular to a seedling growing method for Scotch pine in northern sandy area. The invention is characterized in that seed source is selected; the seeds are arranged in snow or warm water to carry out the bud forcing treatment till that the seeds bud; seedlings are sowed by a level seedbed; meanwhile, soil amendment is fertilized; furthermore, during the period of seedling management, the management is carried out according to different growing conditions of the young seedlings; during the initial growing period of the young seedling, the nursery bed is watered; the temperature of the nursery bed is kept within 8-25 DEG C and the humidity thereof achieves 50%-80% of the water content in the field; furthermore, bordeaux mixture with the mass concentration of 0.8%-1.0% is sprayed once every 5-7 days and then the clean water is sprayed to clean the seedling; during the high growing period of the young seedling, the fertilizer is fertilized again thrice; during the stem growing period of the seedlings, the water content in the field of the nursery bed is kept within 35%-60%; the phosphate fertilizer is fertilized on the leaf surfaces; meanwhile, the winter protection disposal is carried out, thus improving the quality of the survival rate of the seedlings, improving the survival rate of the forest by 33.1% and generating considerable economical and social benefits.

Description

technical field [0001] The invention relates to a seedling raising method, in particular to a sandy pine seedling raising method suitable for northern sandy areas. Background technique [0002] Pinus sylvestris var.mongolica is a geographical variety of Pinus sylvestris distributed to the Far East. It is naturally distributed in Daxing'an Mountains and Hulunbeier Sandy Land in China. In 1955, the Institute of Forestry and Soil Research, Chinese Academy of Sciences (renamed Shenyang Institute of Applied Ecology, Chinese Academy of Sciences in 1987) introduced Pinus sylvestris sylvestris from Heilongjiang to the southeast edge of the Horqin Sandy Land, and achieved success and gradually promoted it. Pinus sylvestris has excellent characteristics such as strong cold resistance, drought resistance, poor soil resistance and fast growth. In addition, its trunk is straight and its material is good. It is suitable for growing in sandy land and can play the role of windbreak and sand...

AI Technical Summary

Problems solved by technology

The reason is that the poor quality of sylvestris sylvestris sylvestris seedlings is the main internal reason for the low survival rate and preservation rate of afforestation

It was also found that the seedling raising of Pinus sylvestris is different from other species of Pinaceae. It is more sensitive to provenance, sowing time, nutrient supply level, cold protection, soil temperature and water content. Windy, concentrated precipitation, and long winter are not conducive to the survival of Pinus sylvestris sylvestris seedlings. At present, the sylvestris sylvestris sylvestris seedlings in the nursery of the traditional seedling raising method show the following shortcomings: (1) The root system is not developed enough; (2) The leaves are tender and woody. (3) The coniferous cuticle is underdeveloped, and the stomatal regulation function is weak; (4) The seedlings have poor adaptability to full light and low ability to resist sandstorms

However, another method that can improve the survival rate of seedlings—container seedling cultivation has high cost, complicated operation, large transportation volume during afforestation, high transportation cost of seedlings, and high requirements for afforestation and site preparation. It is not suitable for large-scale production, especially Constructing Pinus sylvestris plantations in a large area in the semi-arid area of ​​northern my country

In addition, the distribution space of container seedlings is narrow, the root system cannot grow and stretch normally, there is no environment to compete with other seedling root systems, and the resistance training of Pinus sylvestris sylvestris seedlings is insufficient

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