Saline-alkali soil plant planting system

Abstract

The invention relates to a saline-alkali soil plant planting system. The saline-alkali soil plant planting system comprises a saline-alkali isolation layer, a soil improvement layer, an anti-evaporation water retention layer and a transversely-arranged micro wetting dropper salt driving device which are arranged from bottom to top. The saline-alkali isolation layer is composed of organic fertilizer, cobblestone and coarse sand; the soil improvement layer is prepared from saline-alkali soil, organic fertilizer, a water retention agent, cottonseed hulls, flue gas desulfurization gypsum and the like proportionally; the anti-evaporation water retention layer is located on the surface layer of soil, is prepared from smashed cotton stalk or other agricultural wastes, and is of a blanket-shaped structure formed in a pressing or knitting mode; the micro wetting salt driving device is composed of a micro wetting dropper and a water supply system, is embedded into the soil improvement layer and located above a plant root system. The saline-alkali soil plant planting system has the comprehensive effects of driving salt, discharging salt, improving soil, preventing soil resalinization and the like, materials are easy and convenient to use, and the system is economical and easy to implement.

Description

technical field [0001] The patent of the invention belongs to the field of saline-alkali land improvement technology and ecological restoration, and in particular relates to a saline-alkali land plant planting system. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive. [0003] According to the law of soil salt water movement, "salt goes with water" is the most effective measure to reduce soil salinity. Currently, the commonly used salt d...

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Problems solved by technology

[0004] The difficulty in saline-alkali land treatment is that the salt in the bottom soil will return to the surface of the soil through capillary action with the evaporation of water, resulting in the phenomenon of "returning salt", resulting in repeated outbreaks of salt damage in the soil planting layer.

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