A composite material with the function of water and fertilizer retention
A composite material, water and fertilizer retention technology, applied in organic fertilizers, fertilizer mixtures, soil conditioning materials, etc., can solve problems such as inability to solve the problem of sandy soil nutrient infertility, etc., to facilitate large-scale production, improve aggregate structure, and reduce saline-alkali content. Effect
Active Publication Date: 2016-07-13
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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- Application Information
AI Technical Summary
Problems solved by technology
The first category is inorganic materials, which use bentonite (public number CN102511213A) and pulverized sedimentary rock (CN102405822A) to improve soil structure and improve soil water retention performance; Organic polymer colloid (CN102002370A) improves water shortage or soil structure, but cannot solve the problem of nutrient barrenness in sandy soil
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] Raw material ratio: attapulgite 50%, water retaining agent 5%, peat 10%, humic acid 30%, urea 5%;
[0022] Preparation process: each of the above-mentioned raw materials is dried, crushed to more than 200 mesh, fully mixed and packaged.
Embodiment 2
[0024] Raw material ratio: attapulgite 30%, vermiculite 30%, water retaining agent 5%, peat 5%, humic acid 25%, potassium sulfate 2%, urea 3%;
[0025] Preparation process: Dry each of the above-mentioned raw materials, crush them to more than 200 meshes, mix them well and pack them.
Embodiment 3
[0027] Raw material ratio: 40% of Yimeng mixed clay, 30% of vermiculite, 2% of water retaining agent, 8% of peat, 15% of humic acid, 2% of potassium dihydrogen phosphate, and 3% of urea;
[0028] Preparation process: Dry each of the above-mentioned raw materials, crush them to more than 200 meshes, mix them well and pack them.
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Abstract
The invention discloses a composite material with water retention and fertilizer maintenance effects. The composite material is compounded by clay minerals, peat, humic acid, a water retention agent and inorganic fertilizer which serve as raw materials and is mainly used for resisting drought and storing water for desertificated land and improving soil. According to the composite material disclosed by the invention, the organic matter content of a sandy land can be increased, the water retention and fertilizer maintenance properties are improved, and growth of plants is facilitated, so that the aim of ecological recovery is fulfilled; all the raw material components can be naturally degraded; on the premise that the granular structure of the soil is improved, the saline-alkali content is reduced and nutritional components necessary to the growth of the plants are increased, secondary pollution to the environment is avoided; the raw materials is readily available, the preparation technology is simple, the cost is low, and large-scale production is facilitated.
Description
technical field [0001] The invention belongs to the field of soil improvers, and relates to a composite material with the function of water and fertilizer retention, which is mainly used for drought resistance, water storage and soil improvement of sandy land. Background technique [0002] The widespread spread of desertification is desertification, which is one of the most serious global environmental problems. Due to the coarse particles of wind-blown sandy soil, few clay particles in fine soil, deep sand layer, uniform particles, poor water and fertilizer retention, and low organic matter content, sandy soil is very unfavorable for agricultural production and vegetation growth. The original intention and purpose of desertification control is to make the plants planted in the sandy land survive, and the real key to sand control is to keep the water in the sand and the nutrients necessary for plants so that the plants can survive and grow. [0003] There are three main typ...
Claims
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IPC IPC(8): C09K17/40C05G3/80
Inventor 宗莉王爱勤康玉茹杨效和
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI