Method for preventing fertilizers of terraces from being polluted

Abstract

The invention provides a method for preventing fertilizers of terraces from being polluted. The method for preventing the fertilizers of the terraces from being polluted is used for applying soil structure conditioners, soil water-holding agents and plant antitranspirants to fruit trees planted in the terraces. On odd number-step terraces (1, 3, 5), the soil structure conditioners are evenly spread within the whole farmland range. On even number-step terraces (2, 4, 6), the soil structure conditioners are evenly spread to a zonal land surface from 1 / 3 to 2 / 3 of the vertical projection radius of the canopy of each fruit tree. According to the method provided by the invention, through comprehensively controlling multiple migration paths, such as infiltration, holding, leaching, uptake and utilization of liquid fertilizers of the terraces with different steps, through functions of reducing leaching leakage and evaporation and the transpiration loss of the liquid fertilizers, holding the liquid fertilizers at root layers of crops and promoting crop physiology functions, the efficient utilization of the liquid fertilizers of terrace orchards is realized. The method provided by the invention is fewer in input, easy in operation and high in applicability and is suitable for being popularized and applied to the terrace orchards. As the utilization rate of the liquid fertilizers and the crop physiology functions are improved, the environmental pollution level is lower.

Description

technical field [0001] The invention belongs to the fields of agriculture, fruit trees and crop cultivation, and in particular relates to a method for applying chemical preparations. Background technique [0002] The northern mountainous agricultural production areas suffer from severe water shortage, and the rainfall is unevenly distributed in time and space. It is mostly concentrated in June to August. The single rainfall is large, coupled with excessive use of agricultural fertilizers, extensive irrigation methods and other factors, it is easy to cause soil erosion and soil erosion. For erosive fertilizer pollution, changing slopes to terraced fields can effectively reduce soil erosion caused by rainstorm runoff, and reduce fertilizer pollution caused by soil erosion. At present, terraced fields have been widely promoted in northern agricultural production areas, and mainly plant fruit trees with high economic value. However, because the soil in the north is mostly sandy...

AI Technical Summary

Problems solved by technology

However, this technology has not yet solved the problems of how to reduce soil crusts and improve the effective use of soil water and fertilizers. The existing technologies for water and fertilizer storage in the root zone of sandy soil in terraced fields have not fully considered the problems of soil surface crusts and crop water and fertilizer use efficiency. It can reduce the deep leakage of water and fertilizer, but it fails to reduce the loss of water and fertilizer as a whole and improve the water and fertilizer use efficiency of crops, which greatly limits the antifouling effect of this technology in application

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