Soil body constructing method for improving water retention capability of newly increased arable soil and planting method

Abstract

The invention discloses a soil body constructing method for improving the water retention capability of a newly increased arable soil and a planting method. The soil body constructing method comprises the following steps that 1, a first predetermined amount of Malan loess is taken; 2, the malan loess is flatly laid in a target region to form a Malan loess bottom layer; 3, a second predetermined amount of Lishi loess is taken; 4, the Lishi loess is smashed; 5, the smashed Lishi loess is flatly laid on the Malan loess layer according to the predetermined thickness to form a Lishi loess layer; 6, the Malan loess bottom layer and the Lishi loess layer are mixed in a mechanical rotary tillage mode to obtain a Lishi loess and Malan loess compound layer. The soil body constructing method for improving the water retention capability of the newly increased arable soil makes the improved newly increased arable soil have good water retention property, a good water and soil environment is provided for growth and development of crops, and yield traits of the crops can be remarkably improved.

Description

Technical field [0001] The invention belongs to the field of land remediation and farming resources, and specifically relates to a soil construction method for improving the water-holding capacity of newly-added cultivated land soil for ditching and building land and a method for planting crops in the Loess Plateau region, especially forage rape planting. The soil construction method of the present invention is particularly suitable for use in the process of ditching and building the loess plateau. Background technique [0002] The hilly and gully area of ​​the Loess Plateau has vertical and horizontal ravines, complex topography, and serious soil erosion. Since the late 1990s, the project of returning farmland to forests has been vigorously promoted, and ecological construction has achieved remarkable results. However, after returning farmland to forests, the arable land on the slopes has been greatly reduced, which has increasingly affected the livelihoods and food security of ...

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Problems solved by technology

[0003] However, land reclamation by ditch management is facing new problems in the creation of the plow layer, especially the creation of topsoil.

The original topsoil in the loess hilly area is mostly distributed in fragmented gullies, which is significantly different from the distribution characteristics of the topsoil in the land consolidation project area of ​​the plain agricultural area. The cost of stripping the topsoil is huge and the feasibility is not good.

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