Medium/heavy soda saline-alkaline land Chinese wild rye direct seeding method

Abstract

The invention provides a medium / heavy soda saline-alkaline land Chinese wild rye direct seeding method and relates to the technical field of saline-alkaline land treatment and planting. The method comprises the following steps: preparing a land, namely carrying out land rotary tillage for 10cm after unfreezing in spring; improving soil, namely according to the pH value of the soil, applying 1000-2000kg of ardealite per hectare; sowing seeds, namely uniformly sowing Chinese wild rye seeds into the prepared soil by using a seeding machine by using a drilling method, covering with shallow soil, and compacting; covering with straw, namely covering the surface of the soil with straw after seed sowing, covering with a low-density net, and compacting the edges of the net with soil so as to prevent that the straw is blown off by wind or flashed away by water; carrying out irrigation, namely irrigating the soil to accelerate the seedling growth process. An agricultural waste, namely the straw,is adopted to reduce soil moisture evaluation of a saline-alkaline land, the industrial waste, namely the ardealite, is adopted as a soil improver, a saline-alkaline deteriorated grassland can be rapidly recovered as a top-level ecological community of the Songnen plain, the purpose of treating medium / heavy saline-alkaline deteriorated grasslands is achieved, and ecological environments of meadowsteppes can be recovered.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land treatment and planting, in particular to a method for direct-seeding Leymus chinensis in medium-to-severe soda saline-alkali land. Background technique [0002] Land salinization is a worldwide problem faced by human beings. There are 950 million hectares of saline-alkali land in the world, covering more than 80 countries and regions. my country has about 36.3 million hectares of saline-alkali land, about 75% of which have not been effectively controlled and rationally developed and utilized. The Songnen Plain is one of the world's three largest concentrated distribution areas of soda saline-alkali land, covering an area of ​​2.39 million hectares. Relevant countries and international organizations in the world are carrying out saline-alkali land control, development and utilization work. Overseas research on saline-alkali land began in the early 20th century, and preliminary researc...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a method for direct seeding of Leymus chinensis in medium-to-severe soda saline-alkali land, which can not only control saline-alkali degraded grassland, but also solve the pollution problems of agricultural straw utilization and industrial waste phosphogypsum.

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