CN111374034A - Steam-fog cultivation method for cyperus esculentus - Google Patents
Steam-fog cultivation method for cyperus esculentus Download PDFInfo
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- CN111374034A CN111374034A CN202010392482.5A CN202010392482A CN111374034A CN 111374034 A CN111374034 A CN 111374034A CN 202010392482 A CN202010392482 A CN 202010392482A CN 111374034 A CN111374034 A CN 111374034A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention discloses a steam fog cultivation method of cyperus esculentus, which comprises the following steps of germination acceleration: sprouting cyperus esculentus seeds to obtain germinated cyperus esculentus; constructing a steam fog cultivation bed: establishing a cultivation bed with an automatic spraying system, wherein a cultivation bowl with a hollow part at the bottom is arranged on the cultivation bed; a spray head of the automatic spraying system is positioned below the cultivation bowl; planting: taking the germinated cyperus esculentus, planting the roots of the germinated cyperus esculentus downwards in a cultivation bowl, wherein the roots extend out of the hollow parts; spraying management: after the planting of the germinated cyperus esculentus, the nutrient solution is adopted to intermittently spray the root system of the cyperus esculentus; harvesting: and (3) mowing the stem part of the cyperus esculentus seedling at the preset time, and manually harvesting the cyperus esculentus at the preset time. The method for cultivating the cyperus esculentus by steam fog can effectively solve the problems that the cyperus esculentus is difficult to manually harvest, large in mechanical harvesting investment, slow in speed and difficult to clean in conventional soil planting, and the cyperus esculentus is short in harvesting time and easy to damage seeds in a breeding process.
Description
Technical Field
The invention relates to the technical field of agricultural planting, in particular to a steam fog cultivation method for cyperus esculentus.
Background
The cyperus esculentus is a perennial herbaceous plant, the oil content of tubers of the cyperus esculentus is about 27 percent, the oil is light brown, and the cyperus esculentus is fragrant and can be eaten. In the middle of the 19 th century, cyperus rotundus began to grow in the southern united states, followed by extensive cultivation in europe. In the 60 s of the 20 th century, cyperus rotundus began to be introduced into chinese planting.
The cyperus esculentus is required to be planted in an area with the annual average temperature of more than 20 ℃ and the annual rainfall of not less than 600-650 mm. Nutgrass flatsedge is mainly propagated by tubers or seeds and must be soaked in water before sowing. The tuber or seed can be sown after it is swelled by water. The growing period of the cyperus esculentus is about 80-130 days, and the cyperus esculentus can be harvested when leaves are yellow and underground stems are mature.
However, the cyperus esculentus planted by the method has marginal effect in both manual harvesting and mechanical harvesting. This is because the roots of cyperus esculentus are layered and connected to each other, and the entire root system can reach a depth of more than 50 cm. In addition, the tubers and the entire root system of cyperus esculentus are connected by weak roots. When pulled by external force, the roots are extremely easy to break, so that the plant is quite difficult to pull out together with the whole root system and tubers. In addition, when the tuber of the cyperus esculentus is pulled out, soil adhered to the tuber needs to be removed, and the workload is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the cyperus esculentus steam fog cultivation method, which can effectively solve the problems of difficult manual harvesting, large mechanical harvesting investment, slow speed, difficult cleaning, short harvesting time in the breeding process, easy seed injury and the like of the cyperus esculentus in conventional soil planting.
The purpose of the invention is realized by adopting the following technical scheme:
a steam-fog cultivation method of cyperus esculentus comprises the following steps:
accelerating germination: taking cyperus esculentus seed beans for accelerating germination, taking out the cyperus esculentus seed beans when the bud length is 0.3-0.8cm, and marking as germinated cyperus esculentus;
constructing a steam fog cultivation bed: a cultivation bed provided with an automatic spraying system is built in a greenhouse, a plurality of cultivation bowls are arranged on the cultivation bed, hollow parts are arranged at the bottoms of the cultivation bowls, and fixing sponges are arranged in the cultivation bowls; a spray head of the automatic spraying system is positioned below the cultivation bowl;
planting: taking the germinated cyperus esculentus, planting the roots of the germinated cyperus esculentus downwards in the cultivation bowl by using the fixed cotton, wherein the roots of the germinated cyperus esculentus extend out of the hollow part;
spraying management: after the germinated cyperus esculentus is planted, intermittently spraying a root system of the cyperus esculentus by using a nutrient solution, wherein the nutrient solution atomized liquid is sprayed out from a spray head of the automatic spraying system;
harvesting: and (3) mowing the stem part of the cyperus esculentus seedling at the preset time, and manually harvesting the cyperus esculentus at the preset time.
Further, in the germination accelerating step, accelerating germination is carried out in an incubator, and the temperature in the incubator is set to be 15-25 ℃.
Further, the cyperus esculentus seeds are spread in a culture dish in a layer, filtered clean water is used for submerging the lower parts of the cyperus esculentus seeds, and water is changed every day.
Further, in the steam fog cultivation bed constructing step, the plurality of cultivation bowls are arranged according to a specification array with a row spacing of 10cm × 10cm and a plant spacing of ×.
Further, in the step of constructing the steam-fog cultivation bed, a cross-shaped hollow part is arranged at the bottom of the cultivation bowl, the fixed cotton is cylindrical space cotton, the fixed cotton is provided with an opening penetrating through the top and the bottom, and the root of the germinated cyperus esculentus is downwards clamped in the opening.
Further, in the step of constructing the steam fog cultivation bed, the greenhouse is a plastic greenhouse or a sunlight greenhouse.
Further, in the spraying management step, the temperature in the greenhouse is set to be 15-28 ℃, the humidity is set to be 15-60%, and the northern area can be cultivated all the year round.
Further, in the spray control step, the interval time of the intermittent spraying is 1 time per 1.5 hours, each time of the spraying is half a minute, and the spraying amount is 1 L.min-1。
Further, in the spray management step, the nutrient solution is prepared according to the following method: dissolving calcium nitrate tetrahydrate, potassium nitrate, ammonium nitrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, ferric salt solution, trace element solution, ferrous sulfate heptahydrate and disodium ethylene diamine tetraacetate in 500ml of distilled water to obtain the nutrient solution, wherein the pH value of the nutrient solution is 5.5;
the concentrations of the above components were as follows: 1000mg/L of calcium nitrate tetrahydrate, 506mg/L of potassium nitrate, 80mg/L of ammonium nitrate, 136mg/L of monopotassium phosphate, 500mg/L of magnesium sulfate heptahydrate, 5.56mg/L of ferrous sulfate heptahydrate and 7.46mg/L of disodium ethylene diamine tetraacetate;
the adding amount of the iron salt solution is 2.5ml, and the conventional iron salt nutrient solution can be obtained from the market;
the addition amount of the trace element liquid is 5ml, and the pH value is 6.0; the microelement liquid contains potassium iodide 0.83mg/L, boric acid 6.2mg/L, manganese sulfate 22.3mg/L, zinc sulfate 8.6mg/L, sodium molybdate 0.25mg/L, copper sulfate 0.025mg/L, and cobalt chloride 0.025 mg/L.
Further, in the harvesting step, a root truncation pruning is performed once, and the root-crown ratio is adjusted to be 1: 1.
compared with the prior art, the invention has the beneficial effects that:
the method for cultivating the cyperus esculentus by steam fog can effectively solve the problems that the cyperus esculentus is difficult to manually harvest, large in mechanical harvesting investment, slow in speed and difficult to clean in conventional soil planting, and the cyperus esculentus is short in harvesting time and easy to damage seeds in a breeding process. The steam-fog cultivation method is a practical method for improving the planting efficiency and quality of the cyperus esculentus, reducing the planting difficulty and accelerating the breeding process.
Drawings
FIG. 1 is a schematic view of a cultivation bowl provided by the present invention;
fig. 2 is a top view of the fixing sponge provided by the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A steam-fog cultivation method of cyperus esculentus comprises the following steps:
accelerating germination: taking cyperus esculentus seed beans for accelerating germination, taking out the cyperus esculentus seed beans when the bud length is 0.3-0.8cm, and marking as germinated cyperus esculentus; when the bud length is about 0.5cm, the direction of the roots can be conveniently distinguished, and the germinated cyperus esculentus needs to be clamped between sponge blocks in the subsequent planting step, so that certain requirements are imposed on the orientation of the roots.
Constructing a steam fog cultivation bed: a cultivation bed provided with an automatic spraying system is built in a greenhouse, a plurality of cultivation bowls are arranged on the cultivation bed, hollow parts are arranged at the bottoms of the cultivation bowls, and fixing cotton is arranged in the cultivation bowls; a spray head of the automatic spraying system is positioned below the cultivation bowl;
planting: taking the germinated cyperus esculentus, planting the roots of the germinated cyperus esculentus downwards in the cultivation bowl by using the fixed cotton, and extending the roots of the germinated cyperus esculentus out of the hollow parts;
spraying management: after the planting of the germinated cyperus esculentus, the nutrient solution is adopted to intermittently spray the root system of the cyperus esculentus, and the nutrient solution atomized solution is sprayed out from a spray head of an automatic spraying system;
harvesting: cutting the stem part of the cyperus esculentus seedling for a preset time (generally two months later), and manually harvesting the cyperus esculentus for a preset time (generally three months later).
The automatic spraying system comprises a spraying device and a control device, and the control device controls the spraying frequency and the spraying amount, so that the automatic spraying system can be purchased from the market.
In a further embodiment, in the germination accelerating step, germination is performed in an incubator, and the temperature in the incubator is set to 15 to 25 ℃.
As a further embodiment, the cyperus esculentus seeds are spread in a petri dish, filtered clear water is used to submerge the lower part of the cyperus esculentus seeds, and the water is changed daily.
As a further embodiment, in the steam fog cultivation bed construction step, a plurality of cultivation bowls are arranged in a specification array with the row spacing of 10cm × 10cm at the row spacing of ×.
As a further embodiment, in the step of constructing the steam fog cultivation bed, as shown in fig. 1, the bottom of the cultivation bowl is provided with a cross-shaped hollow part, that is, the cultivation bowl is a cross-shaped cultivation bowl, and since the stolons need to extend out of the cultivation bowl and flow into the steam fog cultivation bed below the cultivation bowl, the root system dysplasia caused by the cyperus esculentus curds in the bowl can be prevented by using the cross-shaped cultivation bowl with a simpler structure. In addition, as shown in fig. 2, the fixed cotton is cylindrical space cotton, the fixed cotton is provided with an opening penetrating through the top and the bottom, and the root of the germinated cyperus esculentus is downwards clamped in the opening.
As a further embodiment, in the steam fog cultivation bed constructing step, the greenhouse is a vinyl house or a sunlight greenhouse.
As a further embodiment, in the spraying management step, the temperature in the greenhouse is set to be 15-28 ℃, the humidity is set to be 15-60%, and the northern area can be cultivated all the year round.
In a further embodiment, in the spray control step, the interval time between the intermittent sprays is 1 time per 1.5 hours, each spray is half a minute, and the spray amount is 1 L.min-1. Checking the running condition of the equipment at regular time at least once a day; the concentration of the nutrient solution is measured at regular time at least once a week, and the concentration and the pH are adjusted to be in a normal value range.
As a further embodiment, in the spray management step, the nutrient solution is prepared according to the following method: dissolving calcium nitrate tetrahydrate, potassium nitrate, ammonium nitrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, ferric salt solution, trace element solution, ferrous sulfate heptahydrate and disodium ethylene diamine tetraacetate in 500ml of distilled water to obtain a nutrient solution with the pH value of 5.5; the concentrations of the above components were as follows: 1000mg/L of calcium nitrate tetrahydrate, 506mg/L of potassium nitrate, 80mg/L of ammonium nitrate, 136mg/L of monopotassium phosphate, 500mg/L of magnesium sulfate heptahydrate, 5.56mg/L of ferrous sulfate heptahydrate and 7.46mg/L of disodium ethylene diamine tetraacetate; the adding amount of the ferric salt solution is 2.5 ml; the addition amount of the trace element liquid is 5ml, and the pH value is 6.0; the microelement liquid contains potassium iodide 0.83mg/L, boric acid 6.2mg/L, manganese sulfate 22.3mg/L, zinc sulfate 8.6mg/L, sodium molybdate 0.25mg/L, copper sulfate 0.025mg/L, and cobalt chloride 0.025 mg/L.
As a further embodiment, in the harvesting step, according to the growth condition of the root system, based on the principle that the root system grows faster and more and the root system grows slower, the root is cut short and trimmed once, the ratio of the root to the crown is adjusted, the stolons are promoted to grow and form beans, and the ratio of the root to the crown is preferably adjusted to 1: 1.
the method for cultivating the cyperus esculentus by steam fog can effectively solve the problems that the cyperus esculentus is difficult to manually harvest, large in mechanical harvesting investment, slow in speed and difficult to clean in conventional soil planting, and the cyperus esculentus is easy to damage seeds and the like due to tight harvesting time in a breeding process. The steam-fog cultivation method is a practical method for improving the planting efficiency and quality of the cyperus esculentus, reducing the planting difficulty and accelerating the breeding process.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified.
Example 1:
a steam-fog cultivation method of cyperus esculentus comprises the following steps:
accelerating germination: taking cyperus esculentus seed beans, accelerating germination in an incubator, paving the cyperus esculentus seed beans in a culture dish, filtering, enabling clear water to submerge the lower parts of the cyperus esculentus seed beans, changing water every day, setting the temperature of the incubator to be 20 ℃, taking out the cyperus esculentus seed beans when the bud length is about 0.5cm, and marking the germinant cyperus esculentus seeds as germinated cyperus esculentus;
a step of constructing a steam-fog cultivation bed, which is to establish a cultivation bed with an automatic spraying system in a plastic greenhouse, set the temperature in the plastic greenhouse to be 15-28 ℃ and the humidity to be 15-60%, wherein the cultivation bed can be cultivated in the northern area in the whole year, a plurality of cultivation bowls are arranged on the cultivation bed, the cultivation bowls are arranged according to a specification array with the plant spacing of × and the row spacing of 10cm × 10cm, the bottoms of the cultivation bowls are provided with cross hollow parts, space fixing cotton is arranged in the cultivation bowls, and the fixing cotton is provided with openings penetrating through the tops and the bottoms;
planting: taking the germinated cyperus esculentus, wherein the root of the germinated cyperus esculentus is downwards clamped in the opening of the fixed cotton so as to be planted in the cultivation bowl, and the root of the germinated cyperus esculentus extends out of the hollow part;
spraying management: after the planting of the germinated cyperus esculentus, the root system of the cyperus esculentus is subjected to intermittent spraying by adopting nutrient solution, the spraying interval time of the intermittent spraying is 1 time every 1.5 hours, each time is half a minute, and the spraying amount is 1 L.min-1(ii) a Wherein the nutrient solution (pH 5.5) comprises 500ml of distilled water, 1000mg/L of calcium nitrate tetrahydrate, 506mg/L of potassium nitrate, 80mg/L of ammonium nitrate, 136mg/L of monopotassium phosphate, 500mg/L of magnesium sulfate heptahydrate, 5.56mg/L of ferrous sulfate heptahydrate and 7.46mg/L of disodium ethylenediamine tetraacetate; 2.5ml of iron salt solution; 5ml of trace element liquid (pH is 6.0) (the trace element liquid contains 0.83mg/L of potassium iodide, 6.2mg/L of boric acid, 22.3mg/L of manganese sulfate, 8.6mg/L of zinc sulfate, 0.25mg/L of sodium molybdate, 0.025mg/L of copper sulfate and 0.025mg/L of cobalt chloride);
harvesting: cutting the stem part of the cyperus esculentus seedling after two months, and manually harvesting the cyperus esculentus after three months; simultaneously, carry out root stubbing pruning once, adjust root and crown ratio and be 1: 1.
examples 2 to 7
Examples 2 to 7 were different from example 1 in the temperature of the incubator in the germination accelerating step, and were otherwise the same as in example 1. The specific temperatures and germination rates of cyperus are shown in table 1 below for each example.
TABLE 1 relationship between germination accelerating temperature and germination percentage of Cyperus esculentus
| Example 2 | Example 3 | Example 4 | Example 1 | Example 5 | Example 6 | Example 7 | |
| Temperature (. degree.C.) | 5 | 10 | 15 | 20 | 25 | 30 | 35 |
| Germination percentage (%) | 76 | 85 | 92 | 97 | 94 | 91 | 86 |
As can be seen from Table 1, the germination percentage of Cyperus rotundus L was 97% at a temperature of 20 ℃ in the incubator, which is the best example.
Examples 8 to 22
Examples 8 to 22 are different from example 1 in the plant spacing/row spacing in the steam spray cultivation bed constructing step, and the others are the same as in example 1. The relationship between the row spacing/row spacing and the growth of Cyperus rotundus L for each example is shown in Table 2 below.
TABLE 2 relationship between plant spacing/row spacing and growth of Cyperus rotundus L
| Plant spacing/row spacing | 10cm | 15cm | 20cm | 25cm |
| 10cm | 5.2 | 6.3 | 7.8 | 6.3 |
| 15cm | 5.9 | 7.4 | 7.5 | 7.5 |
| 20cm | 6.3 | 7.9 | 7.9 | 8.2 |
| 25cm | 6.6 | 8.2 | 8.2 | 8.3 |
The density and the growth vigor are comprehensively considered, and 15cm x 15cm is selected as the best row spacing growth vigor of the planted plants of the cyperus esculentus.
Effect evaluation and Performance detection
The embodiment of the invention adopts the steam fog cultivation method to plant the cyperus esculentus, the root system and the cyperus esculentus cannot spread into the soil, all the cyperus esculentus can be harvested during the harvesting, the recovery ratio is 100 percent, is 40 percent higher than the recovery ratio of manual harvesting, and is 15 percent higher than the recovery ratio of machine harvesting. Additionally, the harvest time was only 1/3 for manual harvest and 1/2 for machine harvest.
Meanwhile, the cultivation method provided by the embodiment of the invention saves the labor cost by 500 yuan per mu, and the investment of calculating machine depreciation and diesel consumption is 280 yuan less than machine income per mu. Because the cyperus esculentus cultivated by the conventional method needs to be cleaned during processing, and the steam fog cultivation belongs to soilless cultivation, the cyperus esculentus does not need to be cleaned, and the investment per mu is saved by 100 yuan. However, the yield is slightly lower than that of the conventional cultivation at present due to the steam fog cultivation, and the loss per mu is about 50 yuan.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A steam-fog cultivation method of cyperus esculentus is characterized by comprising the following steps:
accelerating germination: taking cyperus esculentus seed beans for accelerating germination, taking out the cyperus esculentus seed beans when the bud length is 0.3-0.8cm, and marking as germinated cyperus esculentus;
constructing a steam fog cultivation bed: a cultivation bed provided with an automatic spraying system is built in a greenhouse, a plurality of cultivation bowls are arranged on the cultivation bed, hollow parts are arranged at the bottoms of the cultivation bowls, and fixing sponges are arranged in the cultivation bowls; a spray head of the automatic spraying system is positioned below the cultivation bowl;
planting: taking the germinated cyperus esculentus, planting the roots of the germinated cyperus esculentus downwards in the cultivation bowl by using the fixed cotton, wherein the roots of the germinated cyperus esculentus extend out of the hollow part;
spraying management: after the germinated cyperus esculentus is planted, intermittently spraying a root system of the cyperus esculentus by using a nutrient solution, wherein the nutrient solution atomized liquid is sprayed out from a spray head of the automatic spraying system;
harvesting: and (3) mowing the stem part of the cyperus esculentus seedling at the preset time, and manually harvesting the cyperus esculentus at the preset time.
2. The method of steam-spray cultivation of cyperus esculentus according to claim 1, wherein in the germination accelerating step, germination is performed in an incubator, and the temperature in the incubator is set to 15 to 25 ℃.
3. The method of claim 2, wherein the cyperus esculentus seeds are spread in a petri dish, filtered clean water is used to submerge the lower part of the cyperus esculentus seeds, and water is changed daily.
4. The method of claim 1, wherein in the step of constructing the steam-spray cultivation bed, the plurality of cultivation bowls are arranged in a standard array with a row spacing of 10cm × 10cm at a plant spacing of ×.
5. The method for steam-spray cultivation of cyperus esculentus as claimed in claim 1, wherein in the step of constructing the steam-spray cultivation bed, the bottom of the cultivation bowl is provided with a cross-shaped hollow, the fixed cotton is cylindrical space cotton, the fixed cotton is provided with an opening penetrating the top and the bottom, and the root of the germinated cyperus esculentus is clamped downwards in the opening.
6. The method of claim 1, wherein the greenhouse is a vinyl house or a solar greenhouse during the step of constructing the steam-fog cultivation bed.
7. The method of claim 1, wherein in the step of spray management, the temperature in the greenhouse is set to 15-28 ℃ and the humidity is set to 15-60%.
8. The method for steam-spraying cyperus esculentus according to claim 1, wherein in the spraying management step, the interval between the intermittent spraying is 1 time per 1.5 hours, each spraying is performed for half a minute, and the spraying amount is 1L-min-1。
9. The method of claim 1, wherein in the step of spray management, the nutrient solution is formulated as follows: dissolving calcium nitrate tetrahydrate, potassium nitrate, ammonium nitrate, potassium dihydrogen phosphate, magnesium sulfate heptahydrate, ferric salt solution, trace element solution, ferrous sulfate heptahydrate and disodium ethylene diamine tetraacetate in 500ml of distilled water to obtain the nutrient solution, wherein the pH value of the nutrient solution is 5.5;
the concentrations of the above components were as follows: 1000mg/L of calcium nitrate tetrahydrate, 506mg/L of potassium nitrate, 80mg/L of ammonium nitrate, 136mg/L of monopotassium phosphate, 500mg/L of magnesium sulfate heptahydrate, 5.56mg/L of ferrous sulfate heptahydrate and 7.46mg/L of disodium ethylene diamine tetraacetate;
the adding amount of the ferric salt solution is 2.5 ml;
the addition amount of the trace element liquid is 5ml, and the pH value is 6.0; the microelement liquid contains potassium iodide 0.83mg/L, boric acid 6.2mg/L, manganese sulfate 22.3mg/L, zinc sulfate 8.6mg/L, sodium molybdate 0.25mg/L, copper sulfate 0.025mg/L, and cobalt chloride 0.025 mg/L.
10. A method of steam-spray cultivation of cyperus esculentus according to claim 1, characterized in that in the harvesting step, a pruning of the root stub is carried out, adjusting the root-to-crown ratio to 1: 1.
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