Seedling hoarding method with plateau characteristics and special seedling hoarding pit thereof

Abstract

The invention discloses a seedling hoarding method with plateau characteristics and a special seedling hoarding pit thereof. The seedling hoarding pit provided by the invention is in the north-south direction, the length of the pit is 3-6 meters, the width of the pit is 2-3 meters, and the depth of the pit is 3-3.5 meters. In the seedling hoarding method provided by the invention, the seedling isput at the bottom of the seedling hoarding pit, a covering layer formed by soil and / or sand is covered on the seedling, and the water content is 60-70%; the vertical distance between the upper surface of the covering layer and the ground is 1-1.5 meters; the tree body is completely covered, and the thickness of the covering layer is 30-50 centimeters; the seedling is put in the seedling hoarding pit in the following mode: the root system is northward, the treetop is southward, the treetop is upward, and the root system is downward; and an inclination angle of 5-10 degrees is formed between the tree body and the horizontal surface. The method provided by the invention achieves the purposes of keeping the activity and prolonging the period of dormancy of the tree by hoarding the seedling, overcomes the defect of poor plant transplanting season, is simple and effective, can enable the survival ratio of transplantation of bare-rooted trees in high-altitude and high-cold areas to reach more than 60%, and has great popularization value.

Description

technical field [0001] The invention relates to a plateau characteristic seedling storage method and a special seedling storage pit thereof, in particular to a storage seedling preservation method applicable to forest tree seedlings in high-altitude alpine regions before planting. Background technique [0002] At present, bare-root transplanting is the most common and most economical transplanting and planting method in barren hill afforestation tree planting in my country. High-altitude areas (such as the northern Tibetan plateau with an average altitude of ≥ 4,000 meters) are often extremely cold, dry, and windy and sandy in winter for more than half a year. The other three seasons are short and indistinct, with low temperatures and large daily temperature differences. Nagqu is the only prefecture-level town without trees in my country. Therefore, in order to prevent wind and fix sand and improve the ecological environment in high-altitude and high-cold regions, successfu...

AI Technical Summary

Problems solved by technology

However, due to the unique geographical conditions of the northern Tibetan Plateau, the wind is strong in winter and spring (November to April of the following year). According to the meteorological data of Nagqu, the average number of days with strong winds (more than 8 levels) can reach more than 130 days per year, and 50-70% of them are concentrated in winter. In spring, sometimes the wind can reach level 12 instantaneously. It is difficult to build a wind barrier, and the investment is high and the risk is high. In addition, the strong sunlight radiation on the plateau and the thermal conductivity of the sand and gravel soil can easily cause damage to the stored plants. Therefore, the conventional sun beds and seedling storage pits in the inland are not suitable for high altitude and cold areas.

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