Water-saving and soil and water conservation water and fertilizer control methods for winter wheat sloping farmland with sandy thin soil layers in arid valleys

Abstract

The invention relates to a water saving, water and soil conservation and water-fertilizer regulation and control method for arid region river valley sandy thin soil layer winter wheat slop cropland. The method mainly aims at the problems that the arid region river valley newly-claimed sandy thin soil layer winter wheat slop cropland is large in slope gradient, thin in soil layer and poor in water and fertilizer retention capacity, and the yield is unstable due to the fact that the soil fertility is reduced because water and soil loss is prone to occur, water and fertilizer retention of soil of the arid region river valley sandy thin soil layer winter wheat slop cropland and water-fertilizer application are fully coupled by conducting spray irrigation in a small-water-amount, multi-frequency and intermittent mode, combining with fertilizing management and reasonably optimizing the water and fertilizer applying step and mode by means of scientific water and fertilizer regulation and control, the water and fertilizer effectiveness is improved, water and soil loss is prevented, the water and fertilizer requirements of crops are guaranteed, and water and soil conservation, water saving and yield stabilizing are achieved. The method is suitable for the arid region river valley newly-claimed slope land and water saving, yield stabilizing and water and soil conservation of the sandy thin soil layer winter wheat slope cropland with the slop gradient of 2% or above and the soil layer thickness of 20 cm-50 cm.

Description

technical field [0001] The invention relates to a farming technique for water and soil conservation of valley sloping farmland in arid regions, in particular to a water-saving and stable yield control method for water and soil conservation and water and fertilizer control of winter wheat sloping farmland with sandy thin soil layers in river valleys in arid regions. Background technique [0002] More than 40% of the world's continental area is covered by arid and semi-arid areas, and the arid area in Northwest my country is more than a quarter of the country's land area. The dry and rainless climate, weak soil development and sparse vegetation cover have created a fragile and easily disturbed ecological environment in the arid area. Due to the limited suitable water and soil natural resource conditions and the unique oasis economic development model in the arid area, more than 90% of the agricultural and population settlements are concentrated around the surface water system,...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for water-saving and stable production and soil and water conservation water and fertilizer regulation and control method for winter wheat sloping farmland with sandy thin soil layer in valleys in arid areas. , Thin soil layer, poor water and fertilizer retention capacity, prone to water and soil erosion, lower soil fertility and resulting in unstable yields, through small water, multi-frequency intermittent sprinkler irrigation combined with fertilization management, rationally optimize the steps and modes of water and fertilizer application, and use scientific water and fertilizer regulation Fully couple the soil water and fertilizer conservation with water and fertilizer application in the sandy thin-layer soil of the valley in the arid area, increase the effectiveness of water and fertilizer, prevent water and soil erosion, ensure the water and fertilizer demand of crops, and achieve water and soil conservation, water saving and stable production