Cultivation method of coastal saline-alkaline land ecological greening vegetation

Abstract

The invention relates to the technical field of soil improvement, in particular to a cultivation method of coastal saline-alkaline land ecological greening vegetation. The vegetation is simple in structure and reasonable in design, has practical significance and popularization value and is expected to generate good economic benefit. The cultivation method includes following steps: selecting a coastal saline-alkaline land to-be-treated parcel, deeply ploughing the to-be-treated parcel, removing saline-alkaline soil turned out by deep ploughing, arranging an oyster shell layer not lower than 20cm in vertical height at the bottom of the to-be-treated parcel, laying salt-alkali pipes above the oyster shell layer, and selecting borrowed soil of normal soil of non-saline-alkaline land for backfilling; planting bamboo-willow at the edge of the coastal saline-alkaline land to-be-treated parcel, and planting festuca arundinacea at the edge of the coastal saline-alkaline land to-be-treated parcel, wherein distance of adjacent bamboo-willow is not smaller than 1.4m, planting width of festuca arundinacea is not lower than 1m, ridges are arranged on the outer side of festuca arundinacea, and awaterproof film mulching layer is arranged on the surface of each ridge.

Description

technical field [0001] The invention relates to the technical field of soil improvement technology, in particular to a method for cultivating ecological greening vegetation on seaside saline-alkali land. Background technique [0002] The salt contained in the saline-alkali soil affects the normal growth of crops. It is a type of salt accumulation. The salt in the saline-alkali soil makes the osmotic pressure of the soil solution higher than the osmotic pressure of the plant cell fluid, which will cause dehydration of the root hair cells, withering, burning, etc. On the other hand, high concentration of salt will interfere with the intake of nutrients by vegetation, destroy the absorption of other ions by vegetation, cause nutritional disturbance of vegetation, cause induced deficiency disease, cause vegetation to dry up, or even fail to harvest, and saline-alkali land is barren. Not suitable for vegetation to survive. [0003] According to the incomplete statistics of UNESC...

AI Technical Summary

Problems solved by technology

[0005] Improve water conservancy, establish a complete drainage and irrigation system, and use water to drain the salt in the soil. However, this method is not effective for coastal saline-alkali land. It is difficult to eliminate the salt caused by seawater immersion by the drainage and irrigation system alone, which is a waste of fresh water resources.

[0006] Chemical improvement, applying gypsum, black alum and other amendments to saline-alkali land, reducing or eliminating soil salinity, applying bacterial fertilizers to improve soil physical and chemical properties, and preventing groundwater from rising through soil capillaries, but this method has high input costs. The salinity will rise rapidly, and a large amount of fresh water will be used for soil washing measures, which is not a good way to deal with coastal saline land

[0007] Agricultural technology improvement, through deep plowing, grass covering, filling soil, adding organic fertilizers, etc. to improve soil composition and structure, enhance soil permeability, accelerate salt leaching, low salt discharge efficiency, long time effect, and the effect on coastal saline-alkali land Difference