Water-saving fertilizer retaining method for sand land filled with clay slurry

Abstract

The invention relates to the water-saving fertilizer retaining field of sand lands, in particular to a water-saving fertilizer retaining method for sand land filled with clay slurry. The method comprises the following steps: blending thin pulp-shaped liquid of clay with a water-retaining agent to obtain clay slurry liquid; then paving the clay slurry liquid underground at the position with the depth being more than 35 centimeters. According to the method, the clay is blended with the water-retaining agent to obtain the clay slurry liquid, and then the clay slurry liquid is paved underground at a certain depth, so that the method is simple and easy to implement, a water-saving fertilizer retaining effect is achieved after paving, and the effect is quickly realized. The clay is particularly selected, is environment-friendly and pollution-free, is low in cost, and is easily obtained; the water content of the clay can be effectively maintained after the water-retaining agent is added, the continuity of a clay slurry liquid layer is maintained, and the clay is cooperatively matched with the water-retaining agent, so that the clay slurry liquid layer cannot crack due to water loss, and the water-saving fertilizer retaining effect is more durable.

Description

technical field [0001] The invention relates to the field of water-saving and fertilizer-preserving of sandy land, in particular to a method for water-saving and fertilizer-preserving of sandy land filling viscose. Background technique [0002] In recent years, the area of ​​agricultural land in my country is gradually shrinking, while the population is gradually increasing. Increasing grain yield per unit area is an important way to solve the problem of food security in my country. According to statistics, there are currently about 30% of low-yield soil in China. Sandy land is a typical low-yield field in my country. It affects the potential of light and temperature, and has become a bottleneck factor for grain production to reach a new level. [0003] There are many methods for improving sandy soil. For example, the patent application No. 201410175262.1 discloses a method for improving the fertilizer retention of plant-growing concrete. On the surface of the fertilizer, a...

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Problems solved by technology

[0003] There are many methods for improving sandy soil. For example, the patent application No. 201410175262.1 discloses a method for improving the fertilizer retention of plant-growing concrete. On the surface of the fertilizer, a slow-release shell of fertilizer effect is formed to achieve the purpose of slow-release of fertilizer effect and improve the fertilizer retention of concrete; but this method is labor-intensive and time-consuming by mixing concrete and adding organic fertilizer, and the cycle is long and the effect is slow; The method of turning silt and pressing sand is used to save water and fertilizer, but this method requires a lot of investment, the effect is not good, and it cannot be popularized on a large scale; there is also a plastic film under the sandy soil, which has a good water saving and conservation effect. Fertilizer effect, but harmful substances are easy to accumulate, long-term cultivation will seriously affect plant growth, and the plastic film is not easy to rot, causing environmental pollution

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