Film-covering and punching planting method for secondary saline-alkali land in Yellow River irrigation district

Abstract

The invention discloses a film-covering and punching planting method for a secondary saline-alkali land in the Yellow River irrigation district and belongs to the technical field of saline-alkali land planting. The method comprises the steps that a land is selected; a salt-reduction isolating layer is paved; a salt-control permeation-increase water collection pipe is embedded; animal rotten feces, saw timber powder and desulphurization gypsum powder are applied on the land surface; surface ploughing and irrigation are conducted to the saline-alkali land; base fertilizers are applied; trapezoid soil heaps and V-shaped grooves are trimmed; a drip irrigation pipe is embedded; punching and application of soil fertility fertilizers are carried out; film covering, sowing and irrigation are carried out; and management of the salt-control permeation-increase water collection pipe, droppers and a reservoir is conducted. According to the invention, the sowing is conducted after the film covering, and a covering film is punched, so that water-conservation, fertilizer-conservation and temperature increase effects are better, and crop yield increase is promoted. In addition, the soil water holding capacity can be enhanced, soil looseness can be increased, and a soil hardening degree can be improved, so that soluble salt ions can be rapidly leached into a plough layer, the salt ions leached into deep soil layers are not easily delivered to the superficial-layer soil with water, salt surface accumulation can be retarded, and the salt content can be reduced.

Description

technical field [0001] The invention relates to a film-covered hole-opening planting method on secondary saline-alkali soil in the Yellow River irrigation area, and belongs to the technical field of saline-alkali soil planting. Background technique [0002] China currently has 100 million hectares of saline-alkali land, most of which are distributed in arid and semi-arid regions such as North China, Northwest and Northeast China, mainly including Xinjiang, Qinghai, Gansu, Ningxia, Shaanxi, Inner Mongolia, and northeast Shanxi. Most of them belong to the Yellow River system, and the groundwater level is significantly affected by the Yellow River system. The groundwater level is high. The local drinking wells are generally around 20m, and the groundwater level is around 2m. The main soil types are saline soil and aeolian sand, which are developed on the parent material of aeolian sand. The juvenile soil contains a lot of soluble salts, the rainfall is low, the annual average i...

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Problems solved by technology

[0004] The main purpose of the present invention is to solve the problems in the current saline-alkali land improvement technology, such as the insignificant effect of salt discharge and desalination on sal

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