Saline-alkali soil soil improvement fertilizer and preparation method thereof

Abstract

The invention discloses a saline-alkali soil improvement fertilizer and a preparation method thereof. The saline-alkali soil improvement fertilizer consists of the following raw materials in parts by weight: 50-70 parts of a humic fertilizer, 5-15 parts of a compound fertilizer, 20-40 parts of a mineral fertilizer, 10-15 parts of an acid fertilizer and 2-5 parts of a water-retaining agent. The saline soil improvement fertilizer is rich in humic acid and trace element, nutrient components such as nitrogen, phosphorus and potassium are relatively balance, the soil fertility and the soil structure can be improved, the speed of capillary water movement and ineffective evaporation of moisture can be reduced, and a remarkable salt returning suppression effect can be achieved. Meanwhile, the saline-alkali soil improvement fertilizer is relatively good in exchange capability, harmful ions such as Na<+>, SO4<2-> and Cl<-> can be adsorbed, the pH value and the alkalisation degree of soil can be reduced, and the soil exchange capability can be improved.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a special fertilizer mainly used in improvement and restoration of saline-alkali land and a preparation method thereof. Background technique [0002] Saline-alkali land improvement, as a worldwide problem, has received unanimous attention from experts and scholars at home and abroad for many years. Due to the defects of high salt content, poor structure and low fertility in saline-alkali soil, it is difficult to carry out agricultural production without improvement and treatment, which greatly limits the effective use of land resources in this area. With the continuous deepening of regional economic development, ecological problems have become increasingly prominent, especially the problem of land salinization, which seriously restricts the development of regional agriculture. [0003] According to incomplete statistics, my country has 99.13 million hectares of saline-alkali land, distributed in ...

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Problems solved by technology

[0010] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a soil improvement fertilizer for saline-alkali land and its preparation method, which solves the problem of poor improvement effect of saline-alkali land improvement methods in the prior art, low organic matter content of the improved soil, and poor physical and chemical properties. Poor, back to alkali phenomenon and the problem of high cost of improvement