Submerged plough layer structure for promoting rooting of crops in saline and alkaline land and construction method thereof

Abstract

The invention provides a construction method of a submerged plough layer for promoting rooting of crops in a saline and alkaline land and belongs to the technical field of soil plowing.The submerged plough layer is formed by a fertile layer and a surface soil layer.The fertile layer is located at the thickness of 10-30 cm under the earth surface.A high-fertility mixture for fertilizing soil is added to the fertile layer.The surface soil layer is located at the thickness of 10 cm under the earth surface.The surface soil layer is ditched for planting plants, and roots of the plants are close to the submerged plough layer, so that the threat to the crops from salt accumulating on the earth surface is reduced.The physical and chemical properties of soil are improved, the soil moisture conservation effect of the plough layer is improved, during the harvesting period, the crops subjected to fertilization treatment of the submerged plough layer grow well, and the water utilization rate is high; after water of the equal amount is irrigated, the desalting rate of the soil of the submerged plough layer is remarkably higher than that of turning-over plowing treatment.

Description

technical field [0001] The invention belongs to the technical field of soil cultivation, and in particular relates to a method for constructing a submerged layer for promoting rooting of crops in saline-alkali land. Background technique [0002] Soil salinization is one of the main types of soil degradation. A large amount of salt accumulated in saline-alkali soil will cause a series of soil physical and chemical properties to deteriorate: sticky structure, poor ventilation and water permeability, high bulk density, low fertility, and slow nutrient release. These characteristics of saline-alkali soil seriously affect the emergence and normal growth of crops, especially not conducive to the growth of roots and the absorption and utilization of water and nutrients in the soil by roots, resulting in physiological drought of plants and inhibition of growth. On the other hand, the concentration of the soil solution around the root system is too high, which affects the availabili...

AI Technical Summary

Problems solved by technology

Covering plastic film can increase temperature and moisture, control salt surface accumulation, but plastic film is difficult to degrade, using it year after year will reduce the quality of the plow layer soil and cause ecological environmental pollution; water conservancy facilities are improved quickly and effectively, but the maintenance cost is high; chemical amendments are used It can only cure the symptoms but not the root cause, which is likely to cause secondary pollution and is not conducive to sustainable development; biological improvement measures have significant effects and are conducive to the restoration of niches, but the long improvement period seriously restricts agricultural development

Images