Cultivation method of scirpus mariqueter corm seedlings and sludge coast ecological restoration method

Abstract

The invention belongs to the technical field of intertidal zone ecological restoration, and relates to a scirpus mariqueter corm seedling cultivation method and a muddy coast ecological restoration method, and the method comprises the following steps: accelerating germination of scirpus mariqueter corms; carrying out seedling cultivation by adopting ground seedling cultivation, cup seedling cultivation or vegetation blanket cultivation, and outplanting after reaching outplanting standards to obtain scirpus mariqueter corm seedlings; wherein in the cultivation process, the salinity is controlled to be smaller than or equal to 20% o, and the outplanting standard is that the plant height is controlled to be 10-15 cm; for ground seedling cultivation and cup seedling cultivation, water culture or soil culture is adopted after germination accelerating, corm seedlings are obtained after corms germinate till buds grow to 5 cm or above, and then ground seedling cultivation or cup seedling cultivation is conducted on the corm seedlings; for planting blanket cultivation, the scirpus triqueter corm subjected to germination accelerating treatment is cultivated through a planting blanket, and the outplanting standard further includes that the plant density is larger than or equal to 300 plants / m < 2 >. The scirpus mariqueter corm seedlings can adapt to severe environmental conditions, the survival rate is increased, and the scirpus mariqueter corm seedlings are suitable for ecological restoration of muddy coast.

Description

Technical Field

[0001] The invention belongs to the technical field of intertidal zone ecological restoration, and particularly relates to a method for cultivating sea scutellaria bulb seedlings and a method for restoring muddy coast ecology. Background Art

[0002] Traditional methods of planting sea sedge usually involve direct sowing or division propagation, where seeds or seedlings are evenly planted in areas with suitable water depths. After planting, the water level must be regularly adjusted to promote seed germination and root growth. During the entire process, attention must be paid to plant monitoring and management, and replanting and pest control must be performed when necessary. However, the muddy coastal environment is barren, highly disturbing, and plants are difficult to establish, resulting in the long time, low survival rate, and high cost of sea sedge ecological restoration.

[0003] The existing traditional planting methods of sea sedge have the following disadvantages: first, direct sowing or division propagation methods are difficult to establish plants and have low survival rates in the barren and highly disturbed muddy coastal environment; second, in the harsh natural environment, seeds and seedlings grow slowly, and replanting and other work are frequent and complicated, which greatly prolongs the restoration time and leads to low overall restoration efficiency; third, because seedlings are difficult to survive and grow slowly, post-planting maintenance work requires a long time and consumes manpower and material resources, and the cost is high. Summary of the invention

[0004] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the objects of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a method for cultivating sea sedge bulb seedlings and a method for ecological restoration of muddy coasts that meet one or more of the above-mentioned needs.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions: A method for cultivating a sea sedge bulb seedling comprises the following steps: (1) Germination of the corms of Tripterygium wilfordii; The corms of Scutellaria trifoliata were treated with sodium nitrophenolate for germination. (2) Seedling cultivation; The seedlings are cultivated by using ground seedling cultivation, cup seedling cultivation or planting blanket cultivation, and the seedlings are transplanted after reaching the transplanting standard, so as to obtain the sea sedge corm seedlings; wherein, the salinity is controlled to be ≤20‰ during the cultivation process, and the transplanting standard is that the plant height is controlled to be 10-15cm; For ground seedling cultivation and cup seedling cultivation, hydroponic cultivation or soil cultivation is used after germination, and the bulbs are germinated until the buds grow to more than 5 cm to obtain bulb seedlings, and then the bulb seedlings are cultivated in the ground seedling or cup seedling; wherein, the hydroponic cultivation or soil cultivation ensures that the environmental salinity is less than 15‰; Among them, ground seedling cultivation is carried out by planting bulb seedlings on the seedbed; the planting density of cup seedling cultivation is 4 to 6 seedlings / cup; For planting blanket cultivation, the bulbs of Tripterygium wilfordii after germination treatment are cultivated on planting blankets. The standard for outplanting also includes plant density ≥ 300 plants / m 2 .

[0006] As a preferred solution, the vegetation blanket is made of a 3-5 cm thick blanket-shaped carrier made of degradable fiber material, and planting holes are pre-punched on the vegetation blanket, with a density of 30-60 holes / m 2 ; Mix the germination-treated Scutellaria corms with the seedling medium, fill them into the planting holes at a number of 2 to 3 seedlings per hole, cover the surface with the seedling medium for cultivation after filling; after the root system is tightly integrated with the vegetation blanket to form a whole, transplant them to obtain the Scutellaria corm seedlings.

[0007] As a preferred embodiment, in the step (1), the germination is accelerated by soaking in a sodium nitrophenolate aqueous solution for 2 to 5 hours, and the mass fraction of the sodium nitrophenolate aqueous solution is 0.1 to 0.2%.

[0008] As a preferred solution, the construction process of the seedbed includes: Build a seedbed in soil with a salinity of ≤15‰. Dig several parallel trenches as the base, dig drainage ditches between the trenches, reserve drainage outlets for controlling the water level in the seedbed, lay a waterproof membrane at the bottom and around the seedbed, lay water pipes at the bottom, and the water pipes are located above the waterproof membrane. Finally, fill the seedling medium for seedling cultivation.

[0009] As a preferred embodiment, in step (1), the cultivation process of the bulbs of Scutellaria baicalensis comprises the following steps: (a) Seed source preparation; Select healthy and plump brown to black sea sedge seeds; (b) Vernalization and germination; The seeds of Tripterygium wilfordii are mixed with fine sand in a volume ratio of 1:(2-3), and then moistened with water for vernalization. After vernalization, the mixture of seeds and fine sand is taken out and germinated for 4-20 days at 20-25°C to obtain seedlings; wherein the particle size of the fine sand is not greater than 0.35 mm; (c) bulb culture; The seedlings are transferred to the nursery bed and cultivated in the ground until they grow bulbs that meet the harvesting standards. During the cultivation process, the salinity is controlled at ≤20‰ and the harvesting standard is a diameter ≥5mm.

[0010] As a preferred embodiment, in step (a), the condition for screening healthy and full fruits is: thousand-grain weight ≥ 7g.

[0011] As a preferred embodiment, in step (b), the conditions for vernalization are: temperature of 0-6°C and time of 20-30 days.

[0012] The present invention also provides a method for ecological restoration of a muddy coast, wherein the sea sedge bulb seedlings cultivated by the cultivation method described in any of the above schemes are planted on a muddy coast; For wave energy density ≤ 100 J / m 2 In the muddy coastal areas, the best planting period is from April to June each year; For 100 J / m 2 <Wave energy density≤250J / m 2 The best planting period is from April to May every year in the muddy coastal areas.

[0013] As a preferred solution, for 100 J / m 2 <Wave energy density≤250J / m 2 , In muddy coastal areas with salinity ≤15‰ during the rooting and transplanting period, the sea sedge bulb seedlings cultivated in cup seedlings can be planted directly without removing from the pot.

[0014] As a preferred solution, for wave energy density ≤ 80 J / m 2 In the muddy coastal areas with salinity of 15‰≤≤18‰ during the rooting and transplanting period, the sea sedge bulb seedlings are cultivated on vegetation mats. The vegetation mats and the sea sedge bulb seedlings are transplanted together, planted directly and fixed with wooden stakes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The breeding technology with bulbs as the core of the present invention can effectively improve the survival rate of sea sedge; as an asexual propagation body, the bulb has a higher nutrient reserve and stress resistance, and can better adapt to adverse environmental conditions, thereby improving the survival rate; under suitable planting conditions, the survival rate of sea sedge seedlings bred by bulbs can reach more than 80%, while the survival rate of traditional methods is usually less than 50%; 2. The seedling cycle of the bulb propagation of the present invention is relatively short. Since the bulb contains the nutrient reserves required for plant growth, the seedlings can grow quickly and the cultivation process is faster. Compared with seeds and seedlings, the time for the sea sedge to complete ecological restoration can be shortened; 3. The sea sclerotium bulb seedlings bred with bulbs in the present invention have a higher survival rate and a faster growth rate. The number of replanting times and maintenance costs required during the planting process are reduced compared with the traditional method, and the planting cost is high, and the economic benefit is high. The sea sclerotium bulb seedlings are planted by rapidly propagating bulbs for ecological restoration of muddy coasts, and the cost can be reduced by about 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a seedbed according to an embodiment of the present invention; Figure 2 It is a comparative bar graph of the effect of the sea sclerotium corms with or without sodium nitrophenolate treatment on the number of germination of the sea sclerotium corms in different salinities according to the embodiment of the present invention; Figure 3 are photos of various stages of cup seedling cultivation in Application Example 1 of the present invention; Figure 4 are photos of various stages of cultivation of the vegetation blanket of Application Example 1 of the present invention; Figure 5 These are photos of various stages of the ecological restoration of the muddy coast in Application Example 1 of the present invention. DETAILED DESCRIPTION

[0017] The cultivation method of the sea scutellaria bulb seedlings and the method for ecological restoration of muddy coasts of the present invention are specifically described below.

[0018] The seedlings cultivated by the cultivation method of the sea sedge bulb seedlings of the present invention can survive and grow better on muddy coasts, improve the survival rate and success rate of the plants in the process of ecological restoration, reduce the difficulty of restoring muddy coasts with sea sedge, and reduce the cost of maintenance and management while improving the efficiency of ecological restoration.

[0019] Specifically, the method for cultivating the sea sedge bulb seedlings of the embodiment of the present invention comprises the following steps: Step 1: Cultivation and harvesting of sea sedge corms; (a) Seed source preparation; Start harvesting sea sedge seeds after October every autumn, select healthy, plump, brown to black seeds, and ensure that their thousand-grain weight is ≥ 7g; after drying the seeds, store them in a low-temperature and dry place. The temperature should be below 20℃ to avoid moisture, mildew and high temperature; in addition, mix with appropriate amount of pesticides to prevent diseases and pests.

[0020] (b) Vernalization and germination; The seeds of Tripterygium wilfordii are mixed with fine sand in a volume ratio of 1: (2-3), water is added to moisten the mixture, and vernalization is carried out at a temperature of 0-6°C for 20-30 days, and water is added regularly to keep the mixture moist; after vernalization for 30 days, the seeds and fine sand mixture are taken out, and germinated at 20-25°C for 4-20 days to obtain seedlings, which can be used for subsequent cuttings and field cultivation; in addition, the seeds after the vernalization treatment can also be directly used for field cultivation; wherein the particle size of the fine sand is not greater than 0.35 mm; The present invention embodiment carried out a comparative test on the above-mentioned vernalization, and the designed groups included: 4°C vernalization treatment for 15 days, 4°C vernalization treatment for 30 days, 4°C vernalization treatment for 50 days, 10°C vernalization treatment for 15 days, and 10°C vernalization treatment for 20 days. In each group, 500 sea scutellaria seeds were mixed with 2 times the volume of fine sand. The seed germination rates under different treatments are shown in Table 1.

[0021] Table 1 Seed germination rate under different treatments ; As shown in Table 1, vernalization was carried out at 4°C, with water added regularly to keep the seeds moist. After 30 days of vernalization, the final germination rate was as high as 95%, and the seeds could germinate 4 days after germination.

[0022] (c) bulb culture; The conventional time for cultivating seedlings is around April every year, when the temperature reaches 15-30℃; First, build a seedbed in suitable soil with a soil salinity of ≤15‰; Figure 1 As shown, several 20cm deep and 2m wide strip-shaped parallel earth trenches 1 are dug under the soil 0 as a base, drainage ditches 2 are dug between the earth trenches, drainage outlets 3 for controlling the water level are reserved in the seedbed, a waterproof membrane 4 is laid at the bottom and around the seedbed, two irrigation water pipes 5 are laid at the bottom, and the water pipes 5 are located above the waterproof membrane 4, and finally a 15cm thick seedling matrix 6 is filled for seedling cultivation; the seedling matrix can be selected from existing conventional seedling matrix, for example, a seedling matrix with a ratio of sandy soil: loam: peat soil of 4:1:1, and organic fertilizer can be mixed according to actual conditions); The seedlings are transferred to the nursery bed and cultivated in the ground. Generally, it takes 1 to 2 years to stably grow sea sedge corms that meet the harvesting standards. Among them, the salinity is controlled at ≤20‰ during the cultivation process, and the harvesting standard is a diameter ≥5mm. Since most sea sedge corms are ellipsoidal, the short axis diameter ≥5mm is used as the harvesting standard.

[0023] (d) bulb harvesting; The corms of Scutellaria marinum are harvested and stored in winter. From December to February of the following year, the corms of Scutellaria marinum are harvested and sorted according to the size of the corms. Healthy, plump, fresh corms with a diameter of ≥5mm are retained as planting materials for subsequent cultivation of corm seedlings. The harvested corms need to be disinfected and stored in a refrigerated warehouse at 0-4℃ and a humidity of 95%, and can be stored for 3-6 months. The harvested sea sedge corms are used as seed bulbs for subsequent germination and cultivation of sea sedge corm seedlings. In addition, the sea sedge corms can also be directly harvested from the wild and used as seed bulbs.

[0024] Step 2: germination of the corms of the sea sedge; Before the cultivation of the sea sedge corms, germination was accelerated by soaking in a 0.1-0.2wt% sodium nitrophenolate aqueous solution for 2-5 hours. As an example, the germination was accelerated by soaking in a 0.1wt% sodium nitrophenolate aqueous solution for 2.5 hours, and the bulbs were compared with those not soaked in a sodium nitrophenolate aqueous solution (i.e., without chemicals) to observe the germination of the bulbs under different salinities. Each treatment group had 15 bulbs, and the salinity gradient was 0-25. The germination of the bulbs was as follows: Figure 2 As shown in the figure, at salinity of 10‰ and 15‰, soaking in sodium nitrophenolate can effectively improve the germination rate and salt tolerance of bulbs. After the bulbs are germinated, they can be cultured in water or soil. In both cases, the salinity of the environment must be no higher than 15‰. After the bulbs germinate and the buds grow to more than 5 cm, the bulb seedlings are obtained and can be transferred for centralized ground seedling cultivation or cup seedling cultivation. In addition, after the bulbs are germinated, they do not need to be cultured in water or soil and can be directly cultivated on a vegetation blanket.

[0025] Step 3: seedling cultivation; The seedling cultivation of the embodiment of the present invention is divided into three methods: ground seedling cultivation, cup seedling cultivation and planting blanket cultivation. After reaching the standard for transplanting, the seedlings are transplanted to obtain sea sedge bulb seedlings; wherein the salinity is controlled to be ≤20‰ during the cultivation process, and the transplanting standard is that the plant height is controlled to be 10-15cm; Among them, ground seedling cultivation is to cultivate bulb seedlings (such as cuttings) on the above-mentioned seedbeds, and they can be planted out after 2 to 3 months of cultivation and used in ecological restoration, environmental protection and other projects; The planting density of bulb seedlings cultivated in bulb cup seedlings is 4 to 6 seedlings / cup; the cup seedling containers can be in various forms such as paper cups, plastic cups, non-woven bags, etc. Paper cups that are easy for roots to penetrate and degrade are the preferred containers. When the roots grow and fill the container, they can be transplanted. When transplanting paper cup seedlings, there is no need to remove the pots and they can be planted directly; In addition, the corms after germination are cultivated on a planting blanket. The planting blanket is generally made of a 3-5 cm thick blanket carrier made of degradable fiber material, and the most common one is coconut fiber mat. Planting holes are pre-punched on the planting blanket, and the planting hole density is 50 holes / m 2 ; Mix bulbs with a diameter of ≥5mm with the seedling medium, and fill them into the planting holes at a rate of 2-3 bulbs / hole. After filling, cover the surface with the seedling medium for cultivation; After the root system and the planting blanket are tightly integrated, they can be transplanted. The plant density should be ≥300 plants / m 2 , the plants are healthy and free of diseases and insect pests; The above three seedling cultivation methods all require sufficient irrigation and control of salinity ≤20‰. The standard for transplanting is that the plant height reaches 10-15cm. If the plant height is too high, appropriate pruning should be carried out when transplanting to prevent it from lodging under strong water power and affecting survival.

[0026] The muddy coast ecological restoration method of the embodiment of the present invention adopts the sea sedge bulb seedlings cultivated by the above cultivation method for planting; Specifically, the sea sedge bulb seedlings cultivated by the above-mentioned ground seedling cultivation, cup seedling cultivation and vegetation blanket cultivation can be widely used in wave energy density ≤80J / m 2 , muddy beaches and intertidal salt marsh areas with salinity ≤15‰ during the rooting and colonization period; The hydrodynamic force is relatively small, that is, the wave energy density is ≤ 100 J / m 2 In the muddy coastal areas, the best planting period is from April to June each year; The water dynamics are relatively large, i.e. 100 J / m 2 <Wave energy density≤250J / m 2 In the muddy coastal areas, the best planting period is from April to May each year; In addition, when the wave energy density is high, that is, more than 100 J / m 2 In muddy coastal areas, you can try to plant the sea sedge bulb seedlings cultivated in cup seedlings. The cup seedlings do not need to be removed from the pot when used and can be planted directly. The container can retain a relatively complete root system, and the tidal flat planting is not easily washed away by the tide. The sea sedge bulb seedlings cultivated in cup seedlings are preferably planted in an area with a wave energy density of ≤250 J / m 2 , areas with salinity ≤15‰ during the rooting and colonization period; In areas where the salinity exceeds 15‰ during the rooting and planting period, it is possible to try to plant the sea sedge corm seedlings cultivated on a vegetation blanket. The vegetation blanket and the seedlings are taken out of the nursery together and directly planted in the target area and fixed with wooden stakes. The vegetation blanket can provide a certain salinity buffer zone for the seedlings to help them adapt to the high-salinity environment. The sea sedge corm seedlings cultivated on the vegetation blanket are preferably planted in a wave energy density of ≤80J / m 2 , areas where salinity is ≤18‰ during the rooting and colonization period.

[0027] The cultivation method of the sea scutellaria corm seedlings and the method for ecological restoration of muddy coasts of the present invention are further described in detail below through specific application examples.

[0028] Application Example 1: A certain tidal flat is an informal shallow semi-diurnal tidal area with obvious seasonal tide changes. It is a typical strong tide coast with the characteristics of strong tides, rapid currents and high sand content. A pilot sample section with a total length of about 1 km was selected on the above-mentioned tidal flat. In order to implement the ecological restoration of the coastal light beach in the above-mentioned pilot sample section, seedling cultivation work will be carried out at the seedling base near the above-mentioned pilot sample section in the spring and summer of 2024.

[0029] The sediments in the target area of ​​the seashore restoration project are unstable, with an average maximum wave energy density of 155.96 J / m 2The salinity was measured to be 5‰ to 10‰, so the sea Scrub corm seedlings cultivated in cup seedlings were used for restoration; the sea Scrub corms, that is, the bulbs were used to cultivate cup seedlings in the above-mentioned nursery base, and the bulbs after germination were used to make a vegetation blanket; after reaching the nursery standard, it can be moved to the target area for restoration, and artificially transplanted and planted to the surface of the light beach in the restoration target area, such as Figure 3 As shown in the figure, the process from bulb preparation, container rooting, cultivation and planting in the target area is demonstrated to achieve thriving growth in the target area; in addition, an area with a wave energy density of ≤80J / m was selected for the target area of ​​the seashore restoration project. 2 The planting experiment of sea sedge bulb seedlings cultivated with vegetation blanket was carried out in the block. The process from base cultivation, artificial planting, growth and planting to restoration was as follows: Figure 4 As shown, the restored area shows thriving growth of Tripterygium wilfordii.

[0030] like Figure 5 As shown in the figure, ecological restoration was carried out on the above pilot sample section, showing the process from before planting, after planting and after growth. After growth, the density of sea sedge exceeded 800 plants / m 2 The restoration took six months, and the total ecological restoration area reached 9,128 square meters, about 14 acres, and the vegetation coverage rate was greater than 30%, which proved the effectiveness of the rapid cultivation method of the sea sedge of the present invention.

[0031] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A method for cultivating a bulb seedling of Tripterygium wilfordii, characterized in that: The following steps are involved: (1) Germination of the corms of Tripterygium wilfordii; The corms of Scutellaria trifoliata were treated with sodium nitrophenolate for germination. (2) Seedling cultivation; The seedlings are cultivated by using ground seedling cultivation, cup seedling cultivation or planting blanket cultivation, and the seedlings are transplanted after reaching the transplanting standard, so as to obtain the sea sedge corm seedlings; wherein, the salinity is controlled to be ≤20‰ during the cultivation process, and the transplanting standard is that the plant height is controlled to be 10-15cm; For ground seedling cultivation and cup seedling cultivation, hydroponic cultivation or soil cultivation is used after germination, and the bulbs are germinated until the buds grow to more than 5 cm to obtain bulb seedlings, and then the bulb seedlings are cultivated in the ground seedling or cup seedling; wherein, the hydroponic cultivation or soil cultivation ensures that the environmental salinity is less than 15‰; Among them, ground seedling cultivation is carried out by planting bulb seedlings on the seedbed; the planting density of cup seedling cultivation is 4 to 6 seedlings / cup; For planting blanket cultivation, the bulbs of Tripterygium wilfordii after germination treatment are cultivated on the planting blanket. The standard for outplanting also includes plant density ≥ 300 plants / m 2 .

2. The cultivation method according to claim 1, characterized in that The vegetation blanket is made of a 3-5 cm thick blanket-shaped carrier made of degradable fiber material, and planting holes are pre-punched on the vegetation blanket, with a density of 30-60 holes / m 2 ; Mix the germination-treated Scutellaria corms with the seedling medium, fill them into the planting holes at a number of 2 to 3 seedlings per hole, cover the surface with the seedling medium for cultivation after filling; after the root system is tightly integrated with the vegetation blanket to form a whole, transplant them to obtain the Scutellaria corm seedlings.

3. The cultivation method according to claim 1, characterized in that In the step (1), the germination is accelerated by soaking in a sodium nitrophenolate aqueous solution for 2 to 5 hours, wherein the mass fraction of the sodium nitrophenolate aqueous solution is 0.1 to 0.2%.

4. The cultivation method according to claim 1, characterized in that The construction process of the seedbed includes: Build a seedbed in soil with a salinity of ≤15‰. Dig several parallel trenches as the base, dig drainage ditches between the trenches, reserve drainage outlets for controlling the water level in the seedbed, lay a waterproof membrane at the bottom and around the seedbed, lay water pipes at the bottom, and the water pipes are located above the waterproof membrane. Finally, fill the seedling medium for seedling cultivation.

5. The cultivation method according to claim 4, characterized in that: In the step (1), the cultivation process of the scutellaria baicalensis corms comprises the following steps: (a) Seed source preparation; Select healthy and plump brown to black sea sedge seeds; (b) Vernalization and germination; The seeds of Tripterygium wilfordii are mixed with fine sand in a volume ratio of 1:(2-3), and then moistened with water for vernalization. After vernalization, the mixture of seeds and fine sand is taken out and germinated for 4-20 days at 20-25°C to obtain seedlings; wherein the particle size of the fine sand is not greater than 0.35 mm; (c) bulb culture; The seedlings are transferred to the nursery bed and cultivated in the ground until they grow bulbs that meet the harvesting standards. During the cultivation process, the salinity is controlled at ≤20‰ and the harvesting standard is a diameter ≥5mm.

6. The cultivation method according to claim 5, characterized in that: In the step (a), the condition for screening healthy and full fruits is: thousand-grain weight ≥ 7g.

7. The cultivation method according to claim 5, characterized in that: In the step (b), the conditions for vernalization are: temperature of 0-6°C and time of 20-30 days.

8. A method for ecological restoration of muddy coasts, characterized in that: Planting the sea sedge bulb seedlings cultivated by the cultivation method according to any one of claims 1 to 7 on a muddy coast; For wave energy density ≤ 100 J / m 2 The best planting period is from April to June every year in the muddy coastal areas; For 100 J / m 2 <Wave energy density≤250J / m 2 The best planting period is from April to May every year in the muddy coastal areas.

9. The method for ecological restoration of muddy coast according to claim 8, characterized in that: For 100 J / m 2 <Wave energy density≤250J / m 2 , In muddy coastal areas with salinity ≤15‰ during the rooting and transplanting period, the sea sedge bulb seedlings cultivated in cup seedlings can be planted directly without removing from the pot.

10. The method for ecological restoration of muddy coast according to claim 8, characterized in that: For wave energy density ≤80J / m 2 In the muddy coastal areas with salinity of 15‰≤≤18‰ during the rooting and transplanting period, the sea sedge bulb seedlings are cultivated on vegetation mats. The vegetation mats and the sea sedge bulb seedlings are transplanted together, planted directly and fixed with wooden stakes.

Images