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Cadmium-polluted soil repair agent containing phosphate and application thereof

A technology of soil remediation agent and phosphate, which is applied in the field of agricultural compositions and plant planting, and can solve the problems of high cost and the use of agricultural compositions

Active Publication Date: 2014-10-29
CHENGDU NEWSUN CROPSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, compositions comprising chitosan and lentinan are used in pharmaceutical compositions for human use, such as the lentinan-chitosan nanoparticles with anti-tumor effects and immune enhancement effects disclosed in Chinese patent 200910154959, The bioactive polysaccharide self-assembly modification material with antibacterial activity and cytocompatibility disclosed in Chinese patent 201010112065 has not been used in farmland soil as an agricultural composition, and these existing technologies have high costs and cannot be used as an agricultural composition. Industrial application of chemicals in farmland soil

Method used

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  • Cadmium-polluted soil repair agent containing phosphate and application thereof
  • Cadmium-polluted soil repair agent containing phosphate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1 The preparation of the soil remediation agent containing chitosan and lentinan

[0061] Chitosan (Chengdu Qimei Biological Technology Co., Ltd.) and lentinan contained in the soil remediation agent of the present invention can all adopt commercially available products, but preferably the lentinan with a larger amount of consumption can be prepared according to the following method, so that its cost is lower Low, more suitable for promotion and application.

[0062] (1) Preparation of Lentinan

[0063]Crush the fruiting bodies of shiitake mushrooms, pass through a 30-mesh sieve, take 200kg of powder that can pass through the sieve (the particles that cannot pass the sieve will be returned to the pulverizer for crushing), add 1000L of water and soak at 80°C for 1 hour, stir during the period, and then filter to retain the clear liquid; Add 1000L water to soak for 1 hour at 80°C for the first soaking residue, stir during the period, then filter to reta...

Embodiment 2

[0068] Example 2 Research on soil remediation agent containing chitosan and lentinan on soil heavy metal remediation and plant quality improvement

[0069] The Soil and Fertilizer Research Institute of Sichuan Academy of Agricultural Sciences was entrusted to conduct a field test in Pujiang County in a tea garden planted with the No. 9 variety of Chuancha. At the beginning of the test, the following soil repair agent or control was directly applied to the randomly grouped plots, and the soil was turned over. The rest refers to the conventional management of tea gardens:

[0070] A, negative control group: negative control, 90kg / mu;

[0071] B, positive control group 1: positive control group 1, 90kg / mu;

[0072] C, positive control group 2: positive control group 2, 90kg / mu;

[0073] D, low-dose experimental group: the soil remediation agent of embodiment 1, 22.5kg / mu;

[0074] E, middle dose experimental group: the soil remediation agent of embodiment 1, 45kg / mu;

...

Embodiment 3

[0086] Embodiment 3 Preparation and application of phosphate-containing soil remediation agent

[0087] Take 10kg of sodium dihydrogen phosphate and 20kg of activated carbon (acidic activated carbon produced by a chemical method is used as a filler, which can be purchased from Shanghai Tangxin Activated Carbon Co., Ltd.), mix them evenly, and pack them into bags to obtain the soil remediation agent 1 of this embodiment; Sodium dihydrogen 10kg and gac 20kg and the soil remediation agent 20kg of embodiment 1, mix homogeneously, pack, promptly get the soil remediation agent 2 of the present embodiment; Get the soil remediation agent 20kg of gac 20kg and embodiment 1, mix homogeneously, As a positive control; another 20kg of activated carbon was used as a negative control.

[0088] Entrusted the Soil and Fertilizer Research Institute of Sichuan Academy of Agricultural Sciences to conduct a planting test of rape (variety: Mianyou 12) in a small piece of cadmium-contaminated paddy s...

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Abstract

The invention relates to a phosphate for lowering the content of cadmium in plants planted in acidic cadmium-containing soil and / or improving the yield of the plants planted in the acidic cadmium-containing soil, and mainly provides an application method and the like of the phosphate for lowering the content of cadmium in the plants planted in the acidic cadmium-containing soil and / or improving the yield of the plants planted in the acidic cadmium-containing soil.

Description

technical field [0001] The invention belongs to the field of agricultural composition and plant planting, in particular, the invention relates to the improvement of cadmium content and / or yield in plants planted on cadmium-containing acidic soil with phosphate. Background technique [0002] In recent years, the problem of heavy metal pollution in my country's soil has become increasingly prominent, posing a serious threat to the ecological environment, food safety and human health, which cannot be ignored. Waste gas, waste water, and waste residues discharged from industries such as dyestuffs, chemicals, tanning, mineral mining, smelting, and processing contain a large amount of heavy metals. Into the soil through other methods, resulting in an increase in the content of heavy metals in the soil, especially the exchangeable heavy metals, which are directly absorbed and enriched by crops, directly threatening human health. [0003] At present, the soil is repaired by ...

Claims

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Application Information

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IPC IPC(8): C09K17/12C09K17/32C09K17/40B09C1/08C09K101/00
Inventor 何其明詹绍军杨锡良
Owner CHENGDU NEWSUN CROPSCI
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