97 results about "Allelopathy" patented technology

The invention relates to an accompanying cultivation method for green prevention and control of vegetable root knot nematode disease and belongs to the technical field of accompanying cultivation methods. According to the accompanying cultivation method for green prevention and control of the vegetable root knot nematode disease, one of tomato, cucumber and hot pepper is selected to serve as a main cultivation crop, and Chinese onion serves as an accompanying cultivation crop and is planted on two sides of the main cultivation crop according to local conventional cultivation methods. According to the accompanying cultivation method for green prevention and control of the vegetable root knot nematode disease, biological diversity and a principle of allelopathy among crops are utilized, the vegetable root knot nematode disease is reduced by adopting the Chinese onion accompanying cultivation method, the used amount of pesticides is reduced, pesticide residues are reduced, and effective technical guarantee is provided for production of green and pollution-free vegetables.

A method of using vines to control invasion of exotic weeds includes firstly, setting up sample plots in an exotic weed growing land, secondly, setting up a support, thirdly, making a bamboo basket, fourthly, preparing burnt soil, fifthly, preparing matrix mixture, sixthly, filling the bamboo basket, seventhly, growing plants, and eighthly, applying fertilizer. Allelopathy of exotic weeds can be prevented by using the bamboo basket to grow honeysuckle, kudzu and pumpkin, and the roots of the honeysuckle, the kudzu and the pumpkin can be protected from competitive inhibition of the exotic weeds. Raw materials are easy to obtain, the technique is simple and feasible, the exotic weeds are effective in control, and both ecological benefit and economic benefit are considered.

The present invention discloses a method for extracting an effective algae inhibition refinement component from barley. According to the method, barley straws are subjected to a pretreatment and extraction separation based on polarity to obtain an organic phase having algae inhibition activity, and the obtained extraction solution is completely dried and separated by using a positive direction silica gel column to obtain the refinement component having strong algae inhibition ability, wherein an eluant is prepared by mixing dichloromethane and methanol according to a volume ratio of 19:1. The method has characteristics of simpleness, easy performing, low cost, wide and easily-available materials and the like. With the method, the high purity barley allelopathy component having the algae inhibition activity can be obtained, and can be widely applicable for control of algae water blooms in lakes and reservoirs.

The invention discloses an addition method for enhancing the algae removal effect of allelochemicals, and the method comprises the following steps of: A, adding allelochemicals with algal inhibiting activity into eutrophication water containing water bloom algal in a dosage of 40-60mg in a range of per cubic meter; B, adding in a manner of intermittently adding for 9-11 times from 8 a.m. to 8 p.m. in the daytime everyday and continuously adding for 5 days; and C, controlling the intermittent time for addition each time in 0.9-1.1 hours. On the premise of obviously reducing the single adding amount of the allelochemicals, the method can be used for more lastingly and effectively inhibiting the growth of the water bloom algal, preventing and controlling the outbreak of the water bloom in the eutrophication water, playing a role of flexibly, safely and effectively protecting functional waters such as water source regions, scenic waters, aquatic waters and the like, obviously enhancing the algae removal effect of the allelochemicals, realizing the efficient algae removal of the low dosage of the allelochemicals and promoting the application prospect of the allelopathy algae control technology.

The invention discloses a method for increasing the seed germination rate of ammopiptanthus mongolicus through allelopathy of peganum harmala. The method comprises steps as follows: 1, test material treatment: the peganum harmala is dried, crushed and sieved; 2, preparation of an extracting liquid: the extracting solution is prepared sequentially through water extraction, ultrasonic extraction, water extraction and centrifugation; 3, seed culture: a peganum harmala stem leaf water extracting solution is injected to a culture dish where ammopiptanthus mongolicus seeds are sown, the culture dish is covered with a lid and put in an intelligent manual climatic box for culture, the temperature is kept 25 DEG C in the daytime and 20 DEG C at night, the humidity is kept 75%, the illumination is performed for 12 h, and the light intensity is 8,000 LX. The method has the benefits as follows: (1) the cost is low; (2) the germination rate is high and ranges from 83% to 89% (the germination rate is 58% in the contrast group); (3) the germination speed is high, and the average germination index ranges from 61.5%-66% (the average germination index is 53% in the contrast group); (4) no chemicals are used, and the method causes no pollution to the environment.

The invention relates to a reservoir bank hydro-fluctuation belt terraced tree planting method.The technical purpose that terraced, appropriate land and appropriate tree ecological environment repair is carried out in the area where surrounding submersed land is periodically changed due to seasonal water level fluctuation of a reservoir bank hydro-fluctuation belt is achieved.The method is characterized by comprising the steps that different terraced distinguishing is carried out on the reservoir bank hydro-fluctuation belt with the water level fluctuation, and plants are distributed based on biological characteristics of water resistance and dry resistance of plants, forest planting controllability, plant allelopathy, arbor-shrub-grass combining degree and arbor-shrub-grass soil conservation, washout prevention and slope protection ability in different growth spaces; life vitality of tree species is kept, a stable plant community is formed as soon as possible, the good protective effect is achieved on stabilizing tree species and avoiding external force impact, greening, slope protection and soil fixation are achieved, and the certain landscape effect is achieved.

The invention is a method of verifying allelopathy of plants by using chlorophyll fluorescence, and the method comprises the following steps: 1, collection and analysis of plant chlorophyll fluorescence data; and 2, verification of allelopathy on plant chlorophyll content change. The method is advantageous in that the response of allelopathy on plant physiological changes can be determined quickly, efficiently and purposefully, especially the influence on plant photosynthesis.

The invention discloses a method for inhibiting the growth of algae through allelopathy of aquatic plants. In the method, a certain amount of hydrodictyon is put into an algae-containing eutrophic water body, the hydrodictyon releases allelochemicals under the induction of the algae, and the allelochemicals can effectively inhibit the growth of the algae; in addition, the hydrodictyon has high capability of removing nitrogen and phosphorus, so that the eutrophication degree of the water body can be essentially reduced, water bloom or red tide is prevented and controlled, a water source is cleaned, and the aquaculture industry, tourism ecological environment, the drinking water of urban residents, and agricultural and industrial water in various areas easily suffering from algae solution are protected.

The invention discloses a method for cultivating stropharia rugosoannulata in a walnut forest with a strong allelopathic effect in a mixed manner. The method comprises the following steps: preparing cultivating raw materials, pretreating the cultivating raw materials, cultivating in the walnut forest in a mixed manner, performing mushroom sprouting management, harvesting mushrooms, returning mushroom dregs to a field and the like. The invention provides a method for cultivating allelopathic crops and edible mushrooms in a mixed manner for efficiently utilizing a land space. Walnut trees have a relatively strong allelopathic effect, and ordinary plants grow difficultly under the walnut trees, but the allelopathic effect does not affect the stropharia rugosoannulata; the walnut trees naturally shade the stropharia rugosoannulata and can also provide a good growth environment for the stropharia rugosoannulata; the mushroom dregs can be returned to the field to improve the fertilizer efficacy; through reciprocal collaboration between the mushrooms and the woods, a contradiction that other crops cannot grow under the allelopathic effect is overcome, and the land output can be increased to increase income for farmers.

The invention discloses an ultrasonic ultraviolet algea-allelopathy sterilizing unit, comprising a working cavity. The working cavity is formed by the connection of a straight pipe at the front part and a bent pipe at the rear part; the front port of the straight pipe is a water inlet, the section surface of the straight pipe is gradually reduced from front to back, and the rear port of the bent pipe upwarps to form an aeration port; the straight pipe is internally provided with an ultrasonication area and an ultraviolet C waveband treatment area in series; the ultrasonication area is internally provided with at least one probe type ultrasonic reactor which is connected with an ultrasonic generator; the inner upside of the ultraviolet C waveband treatment area is provided with at least one ultraviolet C waveband lamp; an ejector is arranged in the straight pipe and consists of a propeller and a driving motor; and the propeller leads water flow to move back towards the aeration port from the water inlet. The sterilizing unit has simple structure, can be directly placed in water environment for use, and has the advantage of completely treating blue algae.

The invention relates to an analysis test method of allelopathy of plant organ water-soluble extract. The method comprises the following steps of: adding a plant organ into a glass bottle when a valve is in a closed state; adding quartz sand into a plant cultivation utensil; planting a plant seedling; opening the valve after the seedling survives so that nutrient solution in the plant cultivation utensil flows into the glass bottle through a communicating pipe at the bottom; flowing the nutrient solution containing a plant organ water-soluble extract into the communicating pipe at the bottom of the glass bottle, returning to the plant cultivation utensil under the action of airstream; measuring the plant height, leaf area, biomass, photosynthetic rate, root system activity, SOD, POD, CAT and MDA of the plant when the plant in the plant cultivation utensil is in a florescence; measuring the biomass and the output of the plant in the maturing stage; and comparing with the index corresponding to a contrast group plant to obtain the allelopathy of the plant organ water-soluble extract for the plant. In the invention, because the method for integrating the collection of the plant organ water-soluble extract and the research process of the allelopathy is utilized, the working efficiency is improved and the workload is decreased.

The invention discloses a method for combining breeding and breeding of chickens under a grape trellis. The invention fully utilizes the land and space of grapes and maximizes resource utilization. Grass is planted in the vineyard, which makes the grass a dominant group and inhibits the growth of weeds, thus reducing the cost of pest control and pesticide pollution in the vineyard. The selection of suitable forage varieties and the amount of chickens can exert the allelopathic effect of plants to promote the growth of grapes. At the same time, raising chickens provides organic fertilizer for grapes, ensuring the supply of organic nutrients and solving the problem of fertilizer competition. Rotational grazing and recovery period management techniques are used to ensure the growth of pasture and avoid surface soil compaction. Four kinds of pastures, such as ryegrass multiflora, bitter weed, chicory and amaranth, are selected as the main pastures in the vineyard, which ensures a balanced supply of pastures throughout the year.

The invention discloses a rice herbicide, and belongs to the field of pesticides. The rice herbicide has the advantages that eucalyptus root systems are taken as a raw material, through culture of nutrient solution, wet ball-milling and other operation, leaching of phenolic acid substances secreted by the root systems is significantly improved, grass-free soil of the eucalyptus root systems is taken as a raw material, through rejuvenation and fermentation of various nutrients, various organic matters are generated, an allelopathic compound of eucalyptus can be combined with the surrounding growth environment to form a biological allelopathic system when being in use, the inhibiting effect on weed is significant, the ability of rice to absorb nutrients is strengthened, and the effect of biological weed suppression and weeding is achieved; and the rice herbicide solves the problems that an existing rice herbicide has large biotoxicity, and is not conductive to rice ears and fruits.

The invention discloses a production method of tartary buckwheat bud seedlings. The production method includes the steps of disinfection, bud accelerating, seed soaking, intermittent microwave treatment, alternating dark light culture and the like. The germination rate of seeds is significantly increased by the aid of salt stress, and synthesis and enrichment of flavonoids in bud seedlings are promoted; intermittent microwave treatment is adopted to effectively avoid enzyme inactivation caused by excessive temperature, increase the activity of PAL enzyme to facilitate the synthesis of the flavonoids such as rutin, increase the germination rate of tartary buckwheat seeds and the content of the flavonoids and improve antioxidant capacity; the allelopathy of water extract of artemisia artemisia can inhibit the growth of root and stem of the tartary buckwheat bud seedlings, prolong the length of germination to harvest, increase the synthesis time of beneficial substances and stimulate thesynthesis of a large number of flavonoids in the unit time of the bud seedlings by supplement of ultraviolet intermittent irradiation, and the total content of the beneficial substances in the bud seedlings is significantly increased; after inhibiting the growth of root whiskers, the workload of root removal can be reduced, the proportion of harvest part can be increased, and the production efficiency can be increased.

The invention discloses a potamogeton malaianus-sodium alginate pellet-type algistat as well as a preparation method and application thereof and belongs to the field of preparation of macromolecule materials. The algistat is prepared by taking submerged plant potamogeton malaianus extract as a raw material, taking sodium alginate as a coating solution and taking calcium chloride as a cross-linking agent. Compared with the prior art, natural submerged plant with allelopathic effect is used as the raw material, the algistat is easily degradable, is high in alga inhibiting efficiency and is capable of effectively overcoming the defects of secondary pollution caused by chemical and physical methods and high possibility of damage to the water ecological environment; potamogeton malaianus extract powder is coated by sodium alginate, so that the algistat is capable of effectively resisting dilution effect of water flow and overcoming the problem of short alga inhibiting duration; and the efficient alga inhibiting effect is achieved.

The invention provides a soil environmental biosocial disinfectant, which contains a plurality of toxic substances in degradable soil caused by pesticide residue, war chemical residue, harmful substance residue of urban industry, traffic mineral fuel residue, etc. The formulation of the disinfectant consists of microbial bacteria formulation (accounts for 15 percent of the total quantity of raw materials), plant 'allelopathy' substance emulsifier (accounts for 12 percent), biological adsorbent (accounts for 30 percent), inorganic nutrients (accounts for 33 percent) and marine organism (biological hormone) product (accounts for 10 percent). A plurality of project experiments demonstrates that the disinfectant has relatively fast and effective functions to eliminate various residual toxicities in soil and have obvious functions of improving the yield of crops and killing pests.

The invention belongs to the tea plant cultivation technical field, and specifically relates to a tea garden moisture conservation tillage minimizing method comprising the following steps: deep tillage impurity removing and base fertilizer reapplying are done before the tea garden is closed in September-October; uniformly broadcasting trifolium repens seeds in blank zones between lines in the tea garden according to a ratio of 1.0-1.5Kg / mu; raking seeds and capping soil in the surface; doing earthing work with the earthing depth of 0.5-1.0cm; keeping surface soil to be moisture after the earthing work; re-applying nitrogenous fertilizer for one time according to a ratio of 10kg / mu before rhizobium is not generated in a 30-50days period of the trifolium repens seedling stage. The method can utilize competition and allelopathy effects between plants so as to improve tea garden ecology, thus improving soil quality, reducing weed survival space, finally realizing less-tillage or even non-tillage effect of the tea garden cultivation management, and providing important meanings for tea sustainable production and simplification works.

The invention discloses a method of controlling harms of mikania micrantha by allelopathy of local plants. The method comprises steps: after invasive plants in a forest land are removed, the seedlingsof local plants are planted in a mixed mode, wherein the local plants are heteropanax fragrans, macaranga tanarius or aleurites Montana, the seedlings have heights of 50 to 80 cm, and the mixed planting mode is interplanting. The method of the invention has low requirements for tree seedlings, the cost is low, the survival rate is high, the operation is simple and feasible, and the applicabilityis high; through mixed planting, the invasive alien plant Mikania micrantha can be extremely effectively controlled, recurrence is prevented, the invasion harms of other invasive alien plants can alsobe prevented, prevention and control on mikania micrantha in the whole forest community can be realized, and the effects of comprehensive prevention and control can be realized; and the vegetation restoration efficiency is high, and the method disclosed in the invention can be promoted and applied in a large area and has important and far-reaching significance for sustainable development of forests in South China.

The invention discloses a method of using native plants to control growth of exotic ageratum conyzoides, which includes: selecting sample plots from abandoned lands suitable for growth of ageratum conyzoides, eradicating various plants in the sample plots, digging planting pits, mixedly planting xanthiumsibiricum, amaranthus paniculatus, polygonum orientale and chenopodium album into the plantingpits, interplanting the ageratum conyzoides among the former plants, and performing the cycle for interplanting. The xanthiumsibiricum, the amaranthus paniculatus, the polygonum orientale and the chenopodium album are all resistant to allopathic stress from the ageratum conyzoides, and can be mixedly planted to inhibit growth of the ageratum conyzoides and resist its invasion. The method has the advantages that the plants used in the method are all native and easy to propagate and grow fast, revegetation is short, exotic weed control is effective, management is easy, no ecological risks occurand the like.

The invention relates to a device for researching the plant root exudate allelopathy and an application method thereof. The device comprises a donor plant cultivation pot, a receptor plant cultivation pot, communicating pipes and a valve, wherein the bottom of the donor plant cultivation pot is communicated to the upper port of the receptor plant cultivation pot by the communicating pipe with the valve; the bottom of the receptor plant cultivation pot is communicated to the upper port of the donor plant cultivation pot by the communicating pipe provided with an inflation inlet in another pipeline; donor plants are planted in the donor plant cultivation pot; receptor plants are planted in the receptor plant cultivation pot; and mixed liquid comprising donor plant root exudates flows into the receptor plant cultivation pot and returns into the donor plant cultivation pot under the action of the airflow to form the liquid flow circulation. The invention solves the problems of long time consumption, large work load and low precision of the conventional device and method.

The present invention discloses a method for extracting an allelopathy refinement component having algae inhibition activity from barley by using ethyl acetate. According to the method, barley straws are subjected to a pretreatment and extraction separation based on polarity to obtain an ethyl acetate phase having algae inhibition activity, and the obtained extraction solution is completely dried and separated by using a positive direction silica gel column to obtain the refinement component having strong algae inhibition ability, wherein an eluant is prepared by mixing dichloromethane and methanol according to a volume ratio of 49:1. The method has characteristics of simpleness, easy performing, low cost, wide and easily-available materials and the like. With the method, the high purity barley allelopathy component having the algae inhibition activity can be obtained, and can be widely applicable for control of algae water blooms in lakes and reservoirs.

The invention relates to a prevention method for a bighead atractylodes rhizome soil-borne disease. According to the prevention method, symbiotic plants, namely chrysanthemum indicum, are adopted to prevent the bighead atractylodes rhizome soil-borne disease. The transplantation mode is one or any one combination of more than two kinds of intercropping, interplanting and crop rotation. An ecological planting method is adopted, bighead atractylodes rhizome and the chrysanthemum indicum are mixed and planted, planned crop rotation and intercropping are carried out, allelopathy of plants is used for preventing the bighead atractylodes rhizome soil-borne disease, the problem of pesticide residue due to the fact that pesticides are applied for insect and disease prevention when bighead atractylodes rhizome is produced is solved, morbidity of southern blight and root rot of bighead atractylodes rhizome is effectively reduced in production, green and safe production effects are achieved, and meanwhile, a new way is opened up for comprehensive utilization of chrysanthemum indicum.

The invention discloses a biocontrol strain for reducing the crofton weed allelopathic effect and application of the biocontrol strain for reducing the crofton weed allelopathic effect. The biocontrol strain is arthrobacteria (Athrobacter sp.)ZS3 and preserved in the common microbe microorganism center of the China committee for culture collection of microorganisms; and the preservation number CGMCC NO.9283. The arthrobacterium ZS3 enables herba lycopi diketone and hydroxy herba lycopi ketone with the concentration of 100 ug / mL to be degraded by 49.8% and 56.8% in an inorganic salt culture medium within five days. After fungicides with concentration of 109-1010 CFU / mL are sprayed in the proportion of 4mL / 100g soil, and the crofton weed allelopathic effect is reduced by 46.8%. It shows that the biocontrol strain can effectively degrade allelochemicals, and the biocontrol strain has a wide application prospect on preventing and controlling crofton weeds.

The invention relates to a traditional Chinese medicine composition for inhibiting microcystis aeruginosa. The traditional Chinese medicine composition comprises Chinese gall and cortex juglandis mandshuricae according to a weight ratio of 1: 1. In a microcystis aeruginosa liquid, the inhibitor has an appropriate concentration scope of 9-9999mg / L. An appropriate microcystis aeruginosa density range is 1.0*10<5> to 2.5*10<7> per milliliter. Compared with the existing preparation for inhibiting microcystis aeruginosa, through combination of Chinese gall and cortex juglandis mandshuricae, the traditional Chinese medicine composition provided by the invention can substantially inhibit microcystis aeruginosa growth, reduce the content of microcystis aeruginosa in the microcystis aeruginosa liquid, and improve water quality and a water ecological environment. The traditional Chinese medicine composition utilizes natural products of Chinese gall and cortex juglandis mandshuricae, utilizes Chinese gall and cortex juglandis mandshuricae secondary metabolism products with allelopathic effects to inhibit microcystis aeruginosa growth, and has the characteristics of low cost, environmental friendliness and ecological safety.

The invention discloses novel application of salicornia europaea and a root extractive thereof. The salicornia europae (Salicornia europaea L.) and the root extractive thereof provided by the invention are used for inhibiting the algae growth causing red tide and inhibiting the red tide. The algae causing the red tide is selected from at least one of skeletonema costatum, prorocentrum donghaiense and prorocentrum minimum. The method for preparing the root extractive of the salicornia europae comprises the following steps: using an organic solvent as an extractant, and extracting from the root of the salicornia europaea, wherein the organic solvent is selected from any one of petroleum ether, chloroform, methanol and normal butanol. The result of the test shows that four different root extractives of the salicornia europaea can strongly inhibit the growth and the photosynthesis of three kinds of algae; for different algae, the allelopathy strength is different; for the skeletonema costatum, the allelopathy of the petroleum ether phase extractive is the strongest, and IC50 is 1.633 mg / L; for the prorocentrum donghaiense, the function of the chloroform phase extractive is the strongest, and IC50 is 13. 799 mg / L; and for the prorocentrum minimum, the allelopathy is improved along with the increasing of the polarity of the extractive, the function of the methanol phase is the strongest, and IC50 is 1.138 mg / L.

The invention discloses a method of using native plants to control growth of exotic ageratum conyzoides, which includes: selecting sample plots from abandoned lands suitable for growth of ageratum conyzoides, eradicating various plants in the sample plots, digging planting pits, mixedly planting xanthiumsibiricum, amaranthus paniculatus, polygonum orientale and chenopodium album into the plantingpits, interplanting the ageratum conyzoides among the former plants, and performing the cycle for interplanting. The xanthiumsibiricum, the amaranthus paniculatus, the polygonum orientale and the chenopodium album are all resistant to allopathic stress from the ageratum conyzoides, and can be mixedly planted to inhibit growth of the ageratum conyzoides and resist its invasion. The method has the advantages that the plants used in the method are all native and easy to propagate and grow fast, revegetation is short, exotic weed control is effective, management is easy, no ecological risks occurand the like.

The invention discloses a combined method for restoring a eutrophicated water body on the basis of SMFC (sediment microbial fuel cell) and filamentous green algae. The method comprises the following steps: adopting a carbon material as an anode and a cathode; burying the anode into a deposit of a ditch or river course, and attaching the cathode to the inner slope surface of the ditch or river course; connecting a low-power current consumer between the cathode and anode; and finally, inoculating filamentous green algae on the cathode surface. The system can generate electric energy on the basis of the SMFC while decomposing organic pollutants in the deposit by using microbes, and the inorganic carbon generated by organic matter decomposition is used for growing the filamentous green algae. The filamentous green algae have high removal effects on nitrogen and phosphorus in water, and have very high allelopathy inhibiting actions on microalgae capable of forming water bloom. The filamentous green algae are subjected to photosynthesis to generate abundant oxygen, thereby being beneficial to the electricity generation efficiency of the SMFC and increasing the dissolved oxygen of the water body. Besides, the filamentous green algae can be immobilized, separated and recovered more easily than the microalgae, and can not easily generate secondary pollution.

The invention discloses inductive substances for improving rice allelopathy extracted from a secretion solution of barnyard grass. Adsorption separation of the secretion solution of barnyard grass is achieved by macroporous resins ADS8 and the inductive substances for improving rice allelopathy are obtained. The inductive substances are non-polar combinations including amides, indole compounds, phenolic compounds, pahs compounds and alcohol compounds. The inductive substances have the advantage of that the rice allelopathy is significantly increased.

The invention relates to a method to prevent and treat tea garden weeds. Melastoma dodecandrum is planted in footpaths, main paths and edges of a tea garden and closely grows into a green covering layer of Melastoma dodecandrum after 1-2 years of planting; covering and allelopathic actions of Melastoma dodecandrum help inhibit tea garden weeds, thereby preventing and treating the tea garden weeds.The method has the advantages of low cost, environmental friendliness, capability of beatifying a tea garden, and capability of maintaining primitiveness of the tea garden; Melastoma dodecandrum is aperennial evergreen plant and can produce effect for decades after planting once, and therefore, tea garden weeds can be prevented and treated once for all.

The invention belongs to the technical field of environmental protection, and particularly relates to a plateau lake polluted water ecological restoration and aquatic ecosystem restoration method. According to the technology, an aluminum salt passivator and a submerged plant restoration technology are combined, bottom mud in-situ passivation is carried out in a polluted area, bottom mud pollutant release is controlled, the nutrient salt content of an overlying water body is rapidly reduced, meanwhile, the transparency of the water body is improved, and beneficial conditions are provided for submerged plant restoration. Then submerged plants are planted in a matched mode, the ecological system of the submerged plants is recovered, the transparency and oxygen content of the water body are further improved, hydrodynamic disturbance is reduced, and the sediment resuspension effect is reduced. In addition, the submerged plants can also absorb nutrient substances in the water body and the bottom mud, release of the nutrient substances from the bottom mud to the water covering body is greatly reduced, and algae growth is inhibited through the allelochemicity effect. After submerged plants die in winter, the passivator can still play a role, and the nutrient salt content of the water body is controlled to be kept at a low level. The passivator and the submerged plants have a synergistic effect to restore the polluted water body, so that a healthy and stable aquatic ecosystem is formed.