Eucalyptus planting method in rare earth mining area

Abstract

The present invention belongs to the technical field of agriculture and specifically relates to a eucalyptus planting method in a rare earth mining area, and the method has a significant effect for the treatment of sulfate ions and can control water loss and soil erosion. The eucalyptus planting method is characterized by comprising a step of carrying out relay cropping of broadleaf paspalum, vigna sesquipedalis or lespedeza bicolor between the eucalyptus when eucalyptus tissue culture seedlings are planted for two months and grow to a height of about 1m. The method specifically includes the steps of: digging and loosing surface soil, directly sowing certain seeds, then covering the seeds with a small amount of garbage soil, and dibble planting 1 to 15 clumps every 1.2 m. The eucalyptus has an obvious trunk, can grow to a height of about 8m in two years, and can rapidly form an upper canopy. The eucalyptus has sparse branches and leaves, and can form a eucalyptus forest with a large transmittance. Moreover, the broadleaf paspalum, the vigna sesquipedalis, the lespedeza bicolor and the like have certain shade tolerance. Therefore, the broadleaf paspalum, the vigna sesquipedalis, the lespedeza bicolor and the like can form a stable tree, shrub and grass mixed vegetation community with the eucalyptus.

Description

technical field [0001] The invention belongs to the technical field of agriculture, and in particular the invention relates to a method for planting eucalyptus in a rare earth mining area. Background technique [0002] A large amount of (NH 4 ) 2 SO 4 , NH + After the rare earth cations are replaced by ions, they are firmly adsorbed in the waste ore clay. This is an inexhaustible batch of nitrogen resources that are not easy to be developed. In addition, a large amount of water-soluble SO remains in the soil of the rare earth waste mine area. 4 2- Ions, these sulfate ions will be continuously reduced under the leaching of rainwater, but since the bottom of the stockyard is covered with plastic film, in the water accumulation area, SO 4 2- The ion concentration is relatively high. When plants absorb water, SO 4 2- Ions are also absorbed into the plant together, if SO 4 2- If the ion concentration is too high, it will cause direct poisoning to plants (slight poison...

AI Technical Summary

Problems solved by technology

[0002] A large amount of (NH 4 ) 2 SO 4 , NH + After the rare earth cations are replaced by ions, they are firmly adsorbed in the waste ore clay. This is an inexhaustible batch of nitrogen resources that are not easy to be developed.

In addition, a large amount of water-soluble SO remains in the soil of the rare earth waste mine area. 4 2- Ions, these sulfate ions will be continuously reduced under the leaching of rainwater, but since the bottom of the stockyard is covered with plastic film, in the water accumulation area, SO 4 2- Relatively high concentration of ions