Water-retaining agent containing turf and used for agriculture and forestry and preparation method of water-retaining agent

Abstract

The invention provides a water-retaining agent containing turf and used for agriculture and forestry. The water-retaining agent is prepared from following raw materials in percentage by weight through polymerization: 10%-90% of turf, 5%-50% of polymer monomers, 2%-10% of starch, 0.01%-0.5% of a cross-linking agent and 0.05%-0.5% of an initiator. The turf is used as the main raw material for synthesis of the water-retaining agent, so that the raw material price is low, and the cost of the water-retaining agent containing the turf can be reduced to the minimum, unparalleled internal and external conditions for market occupation and competitive advantage enhancement are provided, and very high economic risk resistance is provided for enterprises.

Description

technical field [0001] The invention belongs to the field of preparation of agricultural and forestry production materials, and in particular relates to a peat water-retaining agent for agriculture and forestry and a preparation method thereof. Background technique [0002] Water retaining agent is a kind of organic polymer with three-dimensional network structure. When the water retaining agent is in contact with water molecules, it can absorb water molecules into its network structure through the hydrogen bond formed between its own hydrophilic functional groups and water molecules. This water absorbed into the water retaining agent cannot be removed by squeezing. Therefore, when the water-retaining agent is applied to the soil, it can quickly absorb rainwater, watering or drip irrigation and keep it inside without seepage, thereby ensuring sufficient water in the environment where the root system of the plant is located, and promoting plant growth and development. Due t...

AI Technical Summary

Problems solved by technology

However, in view of the actual application in fields such as agricultural planting and afforestation, there are serious problems in the existing water retaining agents on the market.

Listed as follows: (1) Low mechanical strength, easy to break during application

(2) Poor salt-alkali resistance, very low water absorption rate in soil

(3) The repeated water absorption capacity is very poor, and the water absorption and water retention capacity will be lost after repeated water absorption and discharge several times

(4) It is easy to cause soil acidification

(5) It is easy to cause soil compaction

(6) The price is expensive, usually the market price of this kind of water-retaining agent is more than 28,000 yuan / ton, which cannot be used as a basic agricultural production material

(7) Single performance

The price is high, and farmers and herdsmen cannot afford it

[0006] (2) Due to the limitation of the current technical level, the raw materials of agricultural and forestry water-retaining agents produced by most manufacturers are not suitable for direct application in soil

After application, it often causes soil acidification, soil compaction, and poor soil air permeability, which makes the root system of crops unable to breathe normally, and finally leads to the opposite effect of water retaining agent

[0007] (3) Due to the nature of the raw materials selected by the existing agricultural and forestry water-retaining agent manufacturers, their products have poor salt resistance, resulting in low repeated water absorption capacity in the soil

[0008] (4) Due to the raw materials selected by the existing agricultural and forestry water retaining agent manufacturers, most products not only do not have any ability to promote the absorption of nutrients needed by plants, but also are incompatible with the applied chemical fertilizers

[0009] (5) Due to the nature of the raw materials selected by the agricultural and forestry water-retaining agents currently on the market, their mechanical strength is very low and they are easily broken in the soil