A non-point source pollution control method for winter wheat to suppress salt and increase efficiency

Abstract

The invention discloses a non-point source pollution control method of winter wheat for salt restraining and synergy. The non-point source pollution control method of winter wheat for salt restraining and synergy comprises following steps: S1. deeply loosing plough layers; S2. applying organic fertilizer; S3: sowing winter wheat; S4: applying salt restraining synergist; S5: adjusting soil environment. According to the invention, the method is highly targeted for fertilization, which saves fertilizers, ensures yield increase, and facilitates farm operations in the field. Fertilizer is applied on the crops once a season. The integration of tillage, sowing and fertilizing of winter wheat reduces agricultural operations and reduces labor of farmers. Peasants are easy to accept the method and the method is convenient to operate; the method avoids disturbing the soil frequently and plays a role of storing water and protecting the soil, thereby increasing the storage and utilization of the limited water resources.

Description

technical field [0001] The invention relates to the technical field of farmland non-point source pollution control, in particular to a method for controlling non-point source pollution of winter wheat by suppressing salt and increasing efficiency. Background technique [0002] The formation of salinized soil is a long-term and complicated process. The winter wheat growth period in the low plain saline-alkaline area is generally dry and less rainy in the north, and the low-saline plain area with shallow groundwater is prone to soil inversion in spring. Winter wheat has a large demand for water and fertilizer, but excessive fertilization increases the potential threat of secondary salinization. In addition to meeting the water demand for crop growth, irrigation in farming areas also undertakes the function of leaching the salinity of farmland soil. Flood irrigation and salt pressure in farmland lead to nutrient loss in farmland, which is one of the direct factors causing eutro...

AI Technical Summary

Problems solved by technology

A single salinity control model can no longer meet the needs of controlling non-point source pollution while suppressing salt. Water conservancy engineering measures and agricultural biological measures must be closely combined to better control soil salinization and reduce non-point source pollution.

In the past, most domestic and foreign studies focused on a single treatment measure. Due to the large differences in factors such as soil parent materials and natural environments in different regions, the desalination effects of various improvement measures are not comparable.

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