Application of brassinosteroids to drought resistance and afforestation

Abstract

The invention relates to application of brassinosteroids to drought resistance and afforestation, which has simplicity, low cost, no soil pollution and quick effect and quite important and profound significance to accelerating vegetation to restore and reconstruct and improving the ecological environment. The invention comprises the following steps: (1) selecting the brassinosteroids with the weight percentage of 0.1 percent; (2) selecting an afforestation area; (3) selecting afforestation seasons from the last third of October to the last third of November in autumn and from the first third of March to the first third of April in spring; (4) selecting a land preparation method and specification: digging fish-scale pits on a sloping surface along a contour line, wherein the rows of the fish-scale pits are arrayed in a shape like the Chinese character 'pin', and the each fish-scale pit has a length of 60 cm, a width of 40 cm and a width of 40 cm; (5) determining afforestation tree species and seedling tree ages, wherein the afforestation tree species comprise pitch pines, biota orientalis, ansu apricots, prunus davidiana and hippophae rhamnoides, and annual seedling trees of the biota orientalis and other deciduous species are selected for the afforestation except that biennial seedling trees of the pitch pines are selected for the afforestation; (6) carrying out root-dip treatment of the brassinosteroids; and (7) planting the seedling trees.

Description

1. Technical field:

[0001] The invention relates to a drought-resistant afforestation method, in particular to an application of brassinosteroid in drought-resistant afforestation, in particular to an application method of brassinosteroid in drought-resistant afforestation in arid and semi-arid areas of the Loess Plateau. 2. Background technology:

[0002] The vegetation in the arid and semi-arid areas of the Loess Plateau is sparse, soil erosion is serious, and the ecological environment is deteriorating, which greatly affects the development of social economy. For more than half a century, in order to improve the ecological environment and promote social and economic development, the central and local governments have invested a lot of money in vegetation construction. Due to the scarcity and uneven distribution of precipitation in the Loess Plateau, the large amount of evaporation, and the deep burial of groundwater, there is no possibility for plants to absorb and utiliz...

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