Plant growth regulation complexing agent for strengthening perennial ryegrass to restore cadmium-polluted soil and application of plant growth regulation complexing agent
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A technology for plant growth regulation and cadmium-contaminated soil, which is applied in the field of soil pollution remediation, can solve the problems of unsatisfactory strengthening effects, achieve short harvest intervals, enhance the ability to respond to other biotic and abiotic stresses, and reduce costs
Active Publication Date: 2022-03-01
佛山市南海区苏科大环境研究院 +1
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[0006] However, under the action of a single exogenous substance, its strengthening effect is often unsatisfactory due to the influence of plant growth environment factors, resulting in certain limitations in practical application and promotion.
And other exogenous substances such as sodium nitroprusside and sodium selenite have rarely been reported on the remediation of cadmium-contaminated soil.
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Embodiment 1
[0049] The plant growth regulating compound provided by the present embodiment is composed of the following components: 15 parts of putrescine, 8 parts of spermidine, 4 parts of spermine, 20 parts of salicylic acid, 30 parts of sodium nitroprusside, 5 parts of sodium selenite parts, Tween-80 60 parts, absolute ethanol 200 parts, acetic acid 100 parts, water 120000 parts.
[0050] The plant growth regulating compound agent of this example is prepared by the following steps: considering the influence of the stability of each component in the compound agent on its effect, each component is provided by a pre-prepared mother liquor, and it is ready-to-use and ready-made. The specific method as follows:
[0051] (1) Weigh 15 parts of putrescine, 8 parts of spermidine, and 4 parts of spermine and dissolve them in 1200 parts of distilled water. After stirring and mixing, divide into 100 parts and store at -20°C.
[0052] (2) Weigh 20 parts of salicylic acid, dissolve in 200 parts of ...
Embodiment 2
[0066] This embodiment provides a method for strengthening ryegrass to remediate cadmium-contaminated soil, which specifically includes the following steps:
[0067] (1) Fertilization for soil preparation: Level and plow the ground to be repaired and fertilize. The plowing depth is 20-22cm, and 20t / hm of ryegrass green manure is applied 2 , superphosphate 40kg / mu, diammonium phosphate 25kg / mu.
[0068] (2) Sowing: Dongmu 70 ryegrass seeds were sterilized, soaked, and germinated. In the soil to be repaired, build ridges according to the width of 1m, the distance between the ridges is about 0.3-0.5m, and the height of the ridges is 8-10cm. After the ridge surface is leveled, the general sowing depth is 5cm. The sowing rate should not be too large, generally 7.5-10kg per acre. The sowing ditch is divided according to the row spacing of 0.2-0.3m. The width of the sowing ditch is about 0.1m, and the depth of the sowing ditch is 4-6cm. Cover the sowing ditch with 2 to 3 cm of soi...
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Abstract
The invention relates to a plant growth regulation complexing agent for strengthening perennial ryegrass to restore cadmium-polluted soil and application of the plant growth regulation complexing agent. The plant growth regulation complexing agent is prepared from the following raw materials: 12.5 to 41 parts of polyamine, 4 to 41 parts of salicylic acid, 8 to 60 parts of sodium nitroprusside, 0.8 to 10 parts of sodium selenite, 50 to 75 parts of Tween and 100000 to 150000 parts of water. A traditional single exogenous plant growth regulating substance is broken through, the plant growth regulating complexing agent is compounded by various exogenous substances including polyamine, salicylic acid, sodium nitroprusside and sodium selenite, various exogenous substances are organically combined, the enrichment rate of ryegrass to cadmium can be increased, the cadmium content of ryegrass can be increased, and the cadmium content of ryegrass can be increased. Meanwhile, the capability of the ryegrass on stress of other organisms and abiotic organisms is enhanced, and the problem that the biomass of the ryegrass is small is solved. The plant growth regulating complexing agent is used for strengthening the perennial ryegrass to restore the cadmium-polluted soil, the characteristics that the perennial ryegrass is harvested for multiple times in one year and the harvesting interval is short are fully utilized, the time for phytoremediation of the cadmium-polluted soil is shortened, and the cadmium pollution level in the soil is reduced.
Description
technical field [0001] The invention belongs to the technical field of soil pollution remediation, and in particular relates to a plant growth regulating compound agent for strengthening ryegrass to remediate cadmium-contaminated soil and an application thereof. Background technique [0002] After entering the soil, cadmium is difficult to degrade and accumulates in organisms through the food chain. If things go on like this, it will cause poisoning, cancer, deformity, and mutation, which seriously affects human production activities and the stability of the earth's ecosystem. Phytoremediation technology is a cost-effective remediation technology for cadmium-contaminated soil pollution. It relies on the strong self-resistance mechanism of hyperaccumulator plants to extract or stabilize heavy metals from soil to achieve the purpose of pollution control. [0003] There are about 500 kinds of hyperaccumulator plants that have been discovered so far, but the promotion of phytore...
Claims
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Application Information
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