Method for performing original soil greening on slight saline-alkali soil by using biological type water retention agent

Abstract

The invention provides a method for performing original soil greening on slight saline-alkali soil by using a biological type water retention agent. The water retention agent is prepared from straw powder, trichoderma viride, aspergillus niger, rhizoctonia solani, an azotobacteria inoculant, Albizzia julibrissin leaf powder, elm leaf powder and rockweed powder. A preparation method comprises treating straws; treating the leaf powder comprises a step of preparing a straw product. The invention also provides application of the water retention agent in saline-alkali soil ginkgo planting. The water retention agent and the preparation method have the beneficial effects that the prepared water retention agent has strong water absorbing capacity in distilled water, rainwater and 0.6 percent of an NaCl solution, the weight of absorbed water in the distilled water can reach 920 to 1150 times that of the own weight of the agent, the weight of absorbed water in the rainwater can reach 670 to 860 times that of the own weight of the agent, and the weight of absorbed water in the 0.6 percent of NaCl solution can reach 330 to 520 times that of the own weight of the agent.

Description

technical field [0001] The invention relates to a method for greening original soil of mild saline-alkali land by using a biological water-retaining agent, which belongs to the technical field of landscaping. Background technique [0002] Saline-alkali soil is a general term for saline soil and alkaline soil. Saline soil mainly refers to salinized soil with high chloride or sulfate content. The soil is alkaline, but the pH value is not necessarily high. Alkaline soil refers to the soil containing carbonate or heavy phosphate, the pH value is high, the soil is alkaline, the organic matter content of saline-alkali soil is small, the soil fertility is low, the physical and chemical properties are poor, it is not easy to store water, and the anion and cation harmful to crops Many, crops are not easy to promote seedlings. [0003] The water-retaining agent uses superabsorbent resin, which is a functional polymer material with particularly strong water absorption capacity. Non-...

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Problems solved by technology

[0005] 1. The existing water retaining agent has poor water absorption ability in distilled water, rainwater, and 0.6% NaCl solution or has good water absorption ability in distilled water and rainwater, but the water absorption ability in 0.6% NaCl solution is very poor;

[0006] 2. The existing water-retaining agents have poor water-retaining ability in distilled water, rainwater, and 0.6% NaCl solution, or have good water-retaining ability in distilled water and rainwater, but poor water-retaining ability in 0.6% NaCl solution;

[0007] 3. The existing water-retaining agents have poor water-retaining effects on soil under different water conditions;

[0009] 5. The existing water-retaining agent has poor water-retaining ability to soil in saline-alkali land

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