System and method for fixed planting in saline-alkali land with horizontal staggered arrangement of straw-sand interlayers

Abstract

The invention discloses a saline land fixed planting system and method with horizontally staggered straw and sand barriers, wherein the saline land fixed planting system with horizontally staggered straw and sand barriers successively includes a first soil layer (3), straw and sand barriers and a second soil layer (6) in order from top surface (1) to down. The straw and sand barriers comprise horizontally staggered straw barriers (4) and sand barriers (5); the position of the surface (1) corresponding to the straw barriers (4) covers a mulch film (2); the position of the surface (1) corresponding to the sand barriers (5) covers a sand layer (7); thicknesses of the straw barriers (4) and the sand barriers (5) are 3-5 cm, and thickness of the sand layer covered by the surface is 2-3 cm; thickness of the first soil layer (3) is 35-40 cm. The saline land fixed planting system has the advantages of strengthening the salt-suppressing effect of the straw layers, and integrating salt control,soil moisture conservation, fertilization and yield increase.

Description

technical field [0001] The invention relates to the technical field of soil cultivation, in particular to a fixed planting system and method for saline-alkali land with straw-sand interlayers arranged horizontally and staggered. Background technique [0002] Soil salinization is a worldwide environmental problem. According to incomplete statistics, the saline soil area in the world is about 1 billion hectares. my country is one of the countries with serious soil salinization, with a total area of ​​about 100 million hectares, mainly distributed in the northeast, north and northwest inland areas. Due to the rapid population growth and the rapid development of the national economy in our country, the contradiction between the surge of construction land and the protection of cultivated land has become increasingly prominent. In order to alleviate this conflict, we need to increase the productivity of existing land or reclaim new land. Saline-alkali land is a potential land re...

AI Technical Summary

Problems solved by technology

The above methods have their own advantages and disadvantages: engineering measures require a large amount of engineering and high investment, which increases the cost of agricultural production; agronomic measures have the potential danger of salt return; biological measures are feasible and have the most ecological and economic benefits, and the technology develops rapidly; Improvement measures only treat the symptoms but not the root cause, and improper use can easily cause secondary pollution

However, this method of salt control has a serious salt surface accumulation phenomenon due to the bare surface between the membranes, and the deeply buried straw will decompose with the growth of the age, so the effect of improving saline-alkali land is very limited, and generally only lasts for 3 years.

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