Drought-resisting and water-saving irrigation method for dry-hot valley slope garden

Abstract

The invention relates to a drought-resisting and water-saving irrigation method for a dry-hot valley slope garden, belonging to the technical field of water-saving agriculture irrigation. The method comprises the step of: ditching along the row direction of the fruit trees in the garden, wherein the lengths of the ditches are the same with the lengths of each row of fruit trees, the depth of the ditches is 45-55 cm, the width of the ditches is 30-40cm, the ditches are parallel to the row direction of the fruit trees, the vertical distance between the ditches and the root parts of the trunks of the fruit trees is 50-60cm, membranes are arranged at two ends of the ditches for stopflow, straw bundles or cornstalk bundles are placed in the ditches, and the bundles are arranged 2-3cm higher than the ditch surface; measuring the water content in plough layer soil, wherein water is irrigated in the ditches when the water content of the plough layer soil is less than 30 percent, and water in the ditches permeates into the soil at the fruit tree roots to enable the water content of the plough layer soil to reach 50-60 percent; and laying a layer of straw or cornstalk on the moisture sides of the fruit trees, wherein the laying thickness is 2-5cm. The method has simple structure, simple and convenient operation, low cost, easily-obtained materials and strong adaptability and increases irrigation use ratio by 2.97 times compared with the traditional flooding.

Description

Technical field [0001] The invention relates to the technical field of water-saving agricultural irrigation, and is particularly suitable for drought-resistant and water-saving irrigation of slope orchards in dry red soil and dry red soil in dry-hot valley regions with large water evaporation. Background technique [0002] The average annual temperature in the dry-hot valley area is 20.7-24.1℃, the annual precipitation is 610-817mm, and the annual evaporation is 2600-3700mm, which is 4-6 times the precipitation. The dry and wet seasons are distinct. The precipitation in the dry season (November to May of the following year) is only 10.0-22.2% of the annual precipitation, and the evaporation is more than 10-20 times the precipitation. It is a typical arid and semi-arid climate in the southern subtropics. Suitable for the growth of a variety of tropical and subtropical economic crops. Due to the complex terrain of the mountainous slopes in this region, the area of ​​the plots is s...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the irrigation cost of drip irrigation, sprinkler irrigation or micro-irrigation of sloping orchards in dry and hot valley areas is high, and the irrigation volume of traditional orchard flood irrigation is relatively large, and the soil is very easy to harden after irrigation, and the water evaporation is relatively large. Low water use efficiency, resulting in a lot of waste of water resources, providing a drought-resistant water-saving irrigation method for orchards that is suitable for the unique geographical location, climate characteristics, and agricultural planting conditions of dry and hot valley slopes, with simple structure, low cost, and convenient materials

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