A hydroponic method for giant fungus grass

Abstract

The invention provides a hydroponic method for giant fungus grass, comprising the following steps: S1, cutting bamboo joints of giant fungus grass, leaving a tooth; S2, soaking in rooting liquid for 3-5 hours; S3, putting in a giant fungus grass bamboo joint growth device, wherein the giant fungus grass bamboo joint growth device is provided with a sponge matrix; S4, adding water to the giant fungus grass bamboo joint growth device every day to keep the sponge matrix moist; S5, changing water every 2-3 days to keep the water clean; S6, spraying nutrient solution once after 5 days, and spraying nutrient solution once every 6-10 days in the later period; S7, harvesting; adopting the technical scheme of the invention can accelerate the propagation speed of giant fungus grass, and the survival rate is high. When the growth of branches and leaves reaches 40 cm, it only takes 16 days to harvest the first crop, and the subsequent crop can be harvested again at an interval of 9-10 days. The crop can be harvested 5 times within 55 days. The technical scheme of the invention can increase the number of harvests of giant fungus grass and improve the cultivation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of plant hydroponics, and in particular to a hydroponics method for giant fungus grass. Background Art

[0002] Giant fungus grass is a perennial upright clump-type plant of the genus Pennisetum in the Poaceae family. It has a well-developed root system, a fibrous root system, strong water absorption capacity, thick stems, long internodes, and an axillary bud with wide leaves on each node. The growth cycle is 5-6 months. Giant fungus grass is native to Africa and likes a warm, humid and well-lit environment, fertile land, and is not drought-tolerant or waterlogged.

[0003] At present, the main method for growing giant grass seedlings is the fiber cutting method. Although the fiber cutting method has a simple process, it has a low survival rate, slow propagation, few harvests in a short period of time, and low cultivation efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a hydroponic method of giant grass, comprising the following steps:

[0005] S1, take giant fungus grass and cut it into giant fungus grass bamboo sections of 5-8 cm, and leave one tooth in the giant fungus grass bamboo section;

[0006] S2, soaking the giant fungus grass bamboo joint in rooting solution for 3-5 hours;

[0007] The rooting solution is: ferrous sulfate 0.08-0.12 mg / L+indolebutyric acid 45-55 ppm+naphthaleneacetic acid 0.8-1.2 ppm+pyrocatechol 0.08-0.12 mg / L;

[0008] S3, putting the giant fungus grass bamboo joint soaked in rooting liquid into a giant fungus grass bamboo joint growth device, the temperature of the giant fungus grass bamboo joint growth device is 30-35°C, and the humidity is 60-75% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix;

[0009] S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist;

[0010] S5. Change the water every 2-3 days to keep the water clean;

[0011] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 6-10 days in the later period;

[0012] The nutrient solution is: sodium nitrophenolate 0.008-0.012 mg / L+99% glucose 0.1-0.3 mg / L+allicin 0.1-0.2 mg / L+humic acid 0.01-0.03 mg / L;

[0013] S7. Harvest.

[0014] Preferably, a hydroponic method of giant grass comprises the following steps:

[0015] S1, take giant fungus grass and cut it into 6 cm giant fungus grass bamboo joints, and leave one tooth in the giant fungus grass bamboo joints;

[0016] S2, soaking the giant fungus grass bamboo joint in rooting solution for 4 hours;

[0017] The rooting solution is: 0.1 mg / L ferrous sulfate + 50 ppm indolebutyric acid + 1 ppm naphthylacetic acid + 0.1 mg / L pyrocatecholide;

[0018] S3, placing the giant fungus grass bamboo joint soaked in rooting liquid into a giant fungus grass bamboo joint growth device, wherein the temperature of the giant fungus grass bamboo joint growth device is 33°C and the humidity is 70% rh; a sponge matrix is ​​provided in the giant fungus grass bamboo joint growth device, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix;

[0019] S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist;

[0020] S5. Change water every 2.5 days to keep the water clean;

[0021] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 8 days in the later period;

[0022] The nutrient solution is: sodium nitrophenolate 0.01 mg / L+99% glucose 0.2 mg / L+allicin 0.15 mg / L+humic acid 0.02 mg / L;

[0023] S7. Harvest.

[0024] Preferably, a hydroponic method of giant grass comprises the following steps:

[0025] S1, take giant fungus grass and cut it into 5 cm giant fungus grass bamboo joints, and leave one tooth in the giant fungus grass bamboo joints;

[0026] S2, soaking the giant fungus grass bamboo joint in rooting solution for 3 hours;

[0027] The rooting solution is: ferrous sulfate 0.08 mg / L + indolebutyric acid 45 ppm + naphthylacetic acid 0.8 ppm + tyrosinol 0.08 mg / L;

[0028] S3, putting the giant fungus grass bamboo joint soaked in the rooting liquid into a giant fungus grass bamboo joint growth device, the temperature of the giant fungus grass bamboo joint growth device is 30°C, and the humidity is 60% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix;

[0029] S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist;

[0030] S5. Change the water every 2 days to keep the water clean;

[0031] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 6 days in the later period;

[0032] The nutrient solution is: sodium nitrophenolate 0.008 mg / L+99% glucose 0.1 mg / L+allicin 0.1 mg / L+humic acid 0.01 mg / L;

[0033] S7. Harvest.

[0034] Preferably, a hydroponic method of giant grass comprises the following steps:

[0035] S1, take giant fungus grass and cut it into 8 cm giant fungus grass bamboo joints, and the giant fungus grass bamboo joints have one tooth left;

[0036] S2, soaking the giant fungus grass bamboo joint in rooting solution for 5 hours;

[0037] The rooting solution is: 0.12 mg / L ferrous sulfate + 55 ppm indolebutyric acid + 1.2 ppm naphthylacetic acid + 0.12 mg / L pyrocatecholide;

[0038] S3, putting the giant fungus grass bamboo joint soaked in rooting liquid into a giant fungus grass bamboo joint growth device, the temperature of the giant fungus grass bamboo joint growth device is 35°C, and the humidity is 75% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix;

[0039] S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist;

[0040] S5. Change the water every 3 days to keep the water clean;

[0041] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 10 days in the later period;

[0042] The nutrient solution is: sodium nitrophenolate 0.012 mg / L+99% glucose 0.3 mg / L+allicin 0.2 mg / L+0.03 mg / L humic acid;

[0043] S7. Harvest.

[0044] Preferably, the giant fungus grass bamboo node grower comprises a tray and a plurality of sponge blocks (i.e., sponge matrix), the bottom of the tray is provided with a plurality of first through holes; the sponge block is movably arranged on the tray, and a plug hole is provided in the center of the sponge block; the giant fungus grass bamboo node soaked in rooting liquid is vertically inserted into the plug hole;

[0045] The sponge block is in a rectangular parallelepiped shape, and the diameter of the first through hole is adapted to the stalk of the giant fungus grass bamboo node.

[0046] Preferably, the giant fungus grass bamboo node grower includes a hydroponic mechanism and a spraying mechanism, there are several hydroponic mechanisms, and the hydroponic mechanism includes a hydroponic box and a sponge pad (i.e., a sponge matrix). The hydroponic box is a rectangular parallelepiped with an opening at the top, and several second through holes are opened on the bottom of the hydroponic box. The sponge pad can be movably arranged in the hydroponic box.

[0047] Preferably, a drain box is slidably provided below the hydroponic box, and universal wheels are provided at the four bottom corners of the hydroponic box; a thermometer and hygrometer is provided on the inner wall of one side of the hydroponic box.

[0048] Preferably, the sponge pad is provided with a plurality of cross slots; the distance between the bottom of the cross slot and the bottom of the sponge pad is 2-3 cm.

[0049] Preferably, the spraying mechanism comprises four fixed columns, two sets of transmission structures and a water spraying structure;

[0050] The four fixing columns are vertically fixed to the ground, the two transmission structures are arranged at the tops of two adjacent fixing columns, and the water spraying structure is arranged on the two transmission structures;

[0051] The transmission structure includes a transmission belt, a fixing seat, a motor and a transmission shaft. The fixing seat is fixedly arranged at the top of each fixing column, and the same transmission shaft is arranged on two adjacent fixing seats.

[0052] The motor is arranged on any one of the fixed seats equipped with the transmission shaft, and the transmission belt is arranged on two adjacent fixed seats equipped with the transmission shaft and not equipped with the transmission shaft; the transmission shaft is controlled by the motor to rotate in a forward and reverse cycle, driving the transmission belt to reciprocate between the two adjacent fixed seats equipped with the transmission shaft and not equipped with the transmission shaft;

[0053] The water spray structure includes a water storage pipe and a plurality of nozzles. A water receiving hole is opened on one side of the water storage pipe for communicating with an external liquid storage device. Both ends of the water storage pipe are fixedly connected to two transmission belts respectively; a plurality of nozzles are arranged at equal intervals below the water storage pipe and are connected to the water storage pipe.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] 1. The present invention provides a hydroponic method for giant fungus grass, which can accelerate the propagation speed of giant fungus grass. By adopting the technical solution of the present invention, the survival rate is high. When the branches and leaves grow to 40 cm, it only takes 16 days to harvest the first crop, and then it can be harvested again after an interval of 9-10 days. It can be harvested 5 times within 55 days. The technical solution of the present invention can increase the number of harvests of giant fungus grass and improve the cultivation efficiency.

[0056] 2. The invention provides two types of giant fungus grass bamboo node growers, which are designed in two versions: home version and industrial version. The home version of the giant fungus grass bamboo node grower is suitable for home or laboratory cultivation, and the industrial version of the giant fungus grass bamboo node grower is suitable for large-scale industrial production. They can be selected and used according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is an overall schematic diagram of the giant fungus grass bamboo node grower in Example 1 of the present invention;

[0058] Figure 2 This is an overall schematic diagram of the giant fungus grass bamboo node grower in Example 2 of the present invention;

[0059] Figure 3 for Figure 2 A magnified view of part A;

[0060] Figure 4 This is an exploded view of the partial structure of the giant fungus grass bamboo node grower according to Example 2 of the present invention.

[0061] In the figure, tray-1, sponge block-2, first through hole-3, jack-4, hydroponic box-5, sponge pad-6, second through hole-7, drain box-8, fixing column-9, transmission belt-10, fixing seat-11, motor-12, transmission shaft-13, water storage pipe-14, nozzle-15, thermometer-hygrometer-16, cross slot-17, water receiving hole-18. DETAILED DESCRIPTION

[0062] Example 1

[0063] like Figure 1 As shown, this embodiment provides a home version of a giant fungus grass bamboo node grower, which is suitable for cultivating giant fungus grass at home or in a laboratory, and is specifically as follows: a giant fungus grass bamboo node grower, comprising a tray 1 and a plurality of sponge blocks 2, wherein a plurality of first through holes 3 are provided at the bottom of the tray 1; the sponge block 2 is movably arranged on the tray 1, and a plug hole 4 is provided at the center of the sponge block 2; the giant fungus grass bamboo node soaked in rooting liquid is vertically inserted into the plug hole 4;

[0064] The sponge block 2 is in a rectangular parallelepiped shape, and the diameter of the first through hole 3 is adapted to the stalk of the giant fungus grass bamboo node.

[0065] Example 2

[0066] like Figure 2-4 As shown, this embodiment provides an industrial version of a giant fungus grass bamboo node grower, which is suitable for large-scale industrial production, and is specifically as follows: a giant fungus grass bamboo node grower, including a hydroponic mechanism and a spraying mechanism, wherein the hydroponic mechanism is a plurality of hydroponic mechanisms, and the hydroponic mechanism includes a hydroponic box 5 and a sponge pad 6, wherein the hydroponic box 5 is a rectangular parallelepiped with an upper opening, and a plurality of second through holes 7 are provided on the bottom of the hydroponic box 5, and the sponge pad 6 can be movably arranged in the hydroponic box 5.

[0067] Moreover, a drain box 8 is slidably arranged below the hydroponic box 5 , and universal wheels are arranged at the four bottom corners of the hydroponic box 5 ; a thermometer and hygrometer 16 is arranged on the inner wall of one side of the hydroponic box 5 .

[0068] Moreover, a plurality of cross slots 17 are formed on the sponge pad 6 ; the distance between the bottom of the cross slot 17 and the bottom of the sponge pad 6 is 2-3 cm.

[0069] Moreover, the spraying mechanism includes four fixed columns 9, two sets of transmission structures and a water spraying structure;

[0070] The four fixing columns 9 are vertically fixed to the ground, the two transmission structures are arranged at the tops of two adjacent fixing columns 9, and the water spraying structure is arranged on the two transmission structures;

[0071] The transmission structure includes a transmission belt 10, a fixing seat 11, a motor 12 and a transmission shaft 13. The fixing seat 11 is fixedly arranged at the top of each fixing column 9, and the same transmission shaft 13 is arranged on two adjacent fixing seats 11.

[0072] The motor 12 is arranged on any one of the fixed seats 11 equipped with the transmission shaft 13, and the transmission belt 10 is arranged on two adjacent fixed seats 11 equipped with the transmission shaft 13 and not equipped with the transmission shaft 13; the transmission shaft 13 is controlled by the motor 12 to perform forward and reverse cyclic rotation, driving the transmission belt 10 to reciprocate between the two adjacent fixed seats 11 equipped with the transmission shaft 13 and not equipped with the transmission shaft 13;

[0073] The water spraying structure includes a water storage pipe 14 and a plurality of nozzles 15. A water receiving hole 18 is opened on one side of the water storage pipe 14 for communicating with an external liquid storage device. Both ends of the water storage pipe 14 are fixedly connected to two transmission belts 10 respectively; a plurality of nozzles 15 are arranged at equal intervals below the water storage pipe 14 and are connected to the water storage pipe 14.

[0074] Example 3

[0075] This embodiment is cultivated in the laboratory, a hydroponic method of giant grass includes the following steps:

[0076] S1, take giant fungus grass and cut it into 5 cm giant fungus grass bamboo joints, and leave one tooth in the giant fungus grass bamboo joints;

[0077] S2, soaking the giant fungus grass bamboo joint in rooting solution for 3 hours;

[0078] The rooting solution is: ferrous sulfate 0.08 mg / L + indolebutyric acid 45 ppm + naphthylacetic acid 0.8 ppm + tyrosinol 0.08 mg / L;

[0079] S3, placing the giant fungus grass bamboo joint soaked in the rooting liquid into the giant fungus grass bamboo joint growth device described in Example 1, wherein the temperature of the giant fungus grass bamboo joint growth device is 30° C. and the humidity is 60% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix (sponge block), and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting the sponge matrix (sponge block);

[0080] S4. Add water to the giant fungus grass bamboo node growth chamber every day to keep the sponge matrix (sponge block) moist;

[0081] S5. Change the water every 2 days to keep the water clean;

[0082] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix (sponge block) of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 6 days in the later period;

[0083] The nutrient solution is: sodium nitrophenolate 0.008 mg / L+99% glucose 0.1 mg / L+allicin 0.1 mg / L+humic acid 0.01 mg / L;

[0084] S7. Harvest.

[0085] Example 4

[0086] This embodiment carries out industrial cultivation in the field, and a hydroponic method of giant grass includes the following steps:

[0087] S1, take giant fungus grass and cut it into 8 cm giant fungus grass bamboo joints, and the giant fungus grass bamboo joints have one tooth left;

[0088] S2, soaking the giant fungus grass bamboo joint in rooting solution for 5 hours;

[0089] The rooting solution is: 0.12 mg / L ferrous sulfate + 55 ppm indolebutyric acid + 1.2 ppm naphthylacetic acid + 0.12 mg / L pyrocatecholide;

[0090] S3, placing the giant fungus grass bamboo joint soaked in the rooting liquid into the giant fungus grass bamboo joint growth device described in Example 2, wherein the temperature of the giant fungus grass bamboo joint growth device is 35° C. and the humidity is 75% rh; a sponge matrix (sponge pad) is provided in the giant fungus grass bamboo joint growth device, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting the sponge matrix (sponge pad);

[0091] S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge matrix (sponge pad) moist;

[0092] S5. Change the water every 3 days to keep the water clean;

[0093] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix (sponge pad) of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 10 days in the later period;

[0094] The nutrient solution is: sodium nitrophenolate 0.012 mg / L+99% glucose 0.3 mg / L+allicin 0.2 mg / L+humic acid 0.03 mg / L;

[0095] S7. Harvest.

[0096] Example 5

[0097] This embodiment is cultivated in the laboratory, a hydroponic method of giant grass includes the following steps:

[0098] S1, take the giant fungus grass and cut it into 6 cm giant fungus grass bamboo joints, and the giant fungus grass bamboo joints have one tooth left;

[0099] S2, soaking the giant fungus grass bamboo joint in rooting solution for 4 hours;

[0100] The rooting solution is: 0.1 mg / L ferrous sulfate + 50 ppm indolebutyric acid + 1 ppm naphthylacetic acid + 0.1 mg / L pyrocatecholide;

[0101] S3, placing the giant fungus grass bamboo joint soaked in the rooting liquid into the giant fungus grass bamboo joint growth device described in Example 1, wherein the temperature of the giant fungus grass bamboo joint growth device is 33° C. and the humidity is 70% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix (sponge block), and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting the sponge matrix (sponge block);

[0102] S4. Add water to the giant fungus grass bamboo node growth chamber every day to keep the sponge matrix (sponge block) moist;

[0103] S5. Change the water every 2.5 days to keep the water clean;

[0104] S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix (sponge block) of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 8 days in the later period;

[0105] The nutrient solution is: sodium nitrophenolate 0.01 mg / L+99% glucose 0.2 mg / L+allicin 0.15 mg / L+humic acid 0.02 mg / L;

[0106] S7. Harvest.

[0107] Comparative Examples 1-3

[0108] Comparative Examples 1-3 are the same as Example 5 except that the sponge matrix is ​​replaced, as shown in the following Table 1.

[0109] Table 1 Substrates of Comparative Examples 1-3

[0110]

[0111] Comparative Example 4

[0112] This comparative example is the same as Example 5 except that the tray is replaced by a non-porous tray.

[0113] Comparative Example 5

[0114] This comparative example is the same as Example 5 except that the insertion method of the giant fungus grass bamboo node is replaced by horizontal insertion.

[0115] Comparative Examples 6-10

[0116] Comparative Examples 6-10 are the same as Example 5 except that the rooting liquid is replaced, as shown in Table 2 below.

[0117] Table 2 Rooting liquid of comparative examples 6-10

[0118]

[0119] Comparative Examples 11-14

[0120] Comparative Examples 11-14 are the same as Example 5 except that the nutrient solution is replaced, as shown in Table 3 below.

[0121] Table 3 Nutrient solution of Comparative Examples 11-14

[0122]

[0123] Comparative Example 15

[0124] This comparative example is the same as Example 5 except that two tooth openings are left in the giant fungus grass bamboo node in step S1.

[0125] Experimental Section

[0126] The giant fungus grass was cultivated using the technical schemes of Examples 3, 4, 5 and Comparative Examples 1-15, 30 giant fungus grass bamboos were inserted into each giant fungus grass bamboo growth device, the average temperature was maintained at 33 ° C, the humidity was maintained at 70% rh, and the experiment was carried out under sufficient light conditions, and the number of survivals was counted. When the branches and leaves grow to 40 cm, the first pruning is left to 5 cm, the branches and leaves reach 35 cm, the second pruning is left to 5 cm, the branches and leaves reach 35 cm, the third pruning is left to 5 cm, the branches and leaves reach 35 cm, the fourth pruning is left to 5 cm, the branches and leaves reach 35 cm, the fifth pruning is left to 5 cm, and the branches and leaves reach 35 cm, the fifth pruning is left to 5 cm. In this experiment, the number of days between the first and fifth prunings and the last pruning was counted, and the results are shown in Table 4. The normal stubble was still continued in the later period, and no statistics were made in this experiment.

[0127] Table 4 Growth of giant fungus grass

[0128]

[0129] It can be seen from Table 4 that the giant fungus grasses all survived using the technical solution of the present invention, and the survival rate of comparative examples 1-15 was lower than that of the present invention.

[0130] Comparative Examples 1-3 replace the sponge matrix with non-woven fabrics, sand base, and matrix soil, which is not conducive to the absorption of nutrient solution and does not utilize ventilation and air permeability, and the growth rate and survival rate are affected.

[0131] In comparative example 4, the tray was replaced with a non-porous tray, and some bacteria grew on the bottom, which affected its growth; in comparative example 5, bamboo nodes were horizontally inserted into the sponge matrix, which also affected its growth.

[0132] Comparative Examples 6-10 used different rooting liquids, which affected the early rooting of giant fungus grass and also affected its later growth; moreover, because the rooting liquid used in Comparative Example 6 was distilled water, it was found in the experiment that although the plant height was not much different from that of Comparative Examples 7-10, its nutrient absorption was affected due to poor rooting effect, and the branches and leaves wilted; Comparative Example 10 had some well-developed roots, some no roots, uneven rooting, and inconsistent growth in the later stage. This may be because the increased use of brassinolide broke the hormone balance in the plant, causing the plant to grow too vigorously or too weakly, thereby affecting the growth and quality of the plant.

[0133] Comparative Examples 11-14 used different nutrient solutions, which had a more obvious impact on their later growth; moreover, since the nutrient solution of Comparative Example 11 was distilled water and no other nutrients were provided, the branches and leaves wilted in their later growth, the branches and stems of the plants were also thinner, and the growth was poor.

[0134] In comparative example 15, two teeth were left on the bamboo node of giant fungus grass. Although the survival rate was not affected, due to the two teeth, two giant fungus grasses grew on the same bamboo node, which resulted in competition and both plants grew poorly.

[0135] It can be seen from the above table that the present invention can be harvested 5 times within 55 days. The technical solution of the present invention can increase the number of harvests of giant fungus grass and improve the cultivation efficiency.

Claims

1. A hydroponic method for giant grass, characterized in that: The steps include: S1, take giant fungus grass and cut it into giant fungus grass bamboo sections of 5-8 cm, and leave one tooth in the giant fungus grass bamboo section; S2, soaking the giant fungus grass bamboo joint in rooting solution for 3-5 hours; The rooting solution is: ferrous sulfate 0.08-0.12 mg / L + indolebutyric acid 45-55 ppm + naphthylacetic acid 0.8-1.2 ppm + tyrosinol 0.08-0.12 mg / L; S3, placing the giant fungus grass bamboo joint soaked in the rooting liquid into a giant fungus grass bamboo joint growth device, wherein the temperature of the giant fungus grass bamboo joint growth device is 30-35° C. and the humidity is 60-75% rh; The giant fungus grass bamboo node growing device is provided with a sponge matrix, and the giant fungus grass bamboo node is placed in the giant fungus grass bamboo node growing device by vertically inserting the sponge matrix; S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist; S5. Change the water every 2-3 days to keep the water clean; S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 6-10 days in the later period; The nutrient solution is: sodium nitrophenolate 0.008-0.012 mg / L+99% glucose 0.1-0.3 mg / L+allicin 0.1-0.2 mg / L+humic acid 0.01-0.03 mg / L; S7, harvest; The giant fungus grass bamboo node grower comprises a hydroponic mechanism and a spraying mechanism, wherein the hydroponic mechanism is a plurality of hydroponic mechanisms, and the hydroponic mechanism comprises a hydroponic box (5) and a sponge pad (6), wherein the hydroponic box (5) is a rectangular parallelepiped with an upper opening, and a plurality of second through holes (7) are formed on the bottom of the hydroponic box (5), and the sponge pad (6) is movably arranged in the hydroponic box (5); A drain box (8) is slidably disposed below the hydroponic box (5), and universal wheels are disposed at the four bottom corners of the hydroponic box (5); a thermometer and hygrometer (16) is disposed on an inner wall of one side of the hydroponic box (5); The sponge pad (6) is provided with a plurality of cross slots (17); the distance between the bottom of the cross slot (17) and the bottom of the sponge pad (6) is 2-3 cm; The spraying mechanism comprises four fixed columns (9), two sets of transmission structures and a water spraying structure; The four fixing columns (9) are vertically fixed to the ground, the two sets of transmission structures are arranged at the top ends of two adjacent fixing columns (9), and the water spraying structure is arranged on the two sets of transmission structures; The transmission structure comprises a transmission belt (10), a fixing seat (11), a motor (12) and a transmission shaft (13); the fixing seat (11) is fixedly arranged at the top end of each fixing column (9); and the same transmission shaft (13) is arranged on two adjacent fixing seats (11); The motor (12) is arranged on any one of the fixed seats (11) equipped with a transmission shaft (13), and the transmission belt (10) is arranged on two adjacent fixed seats (11) equipped with a transmission shaft (13) and not equipped with a transmission shaft (13); the transmission shaft (13) is controlled by the motor (12) to perform forward and reverse cyclic rotation, thereby driving the transmission belt (10) to reciprocate between two adjacent fixed seats (11) equipped with a transmission shaft (13) and not equipped with a transmission shaft (13); The water spray structure comprises a water storage pipe (14) and a plurality of spray heads (15); a water receiving hole (18) is provided on one side of the water storage pipe (14) for communicating with an external liquid storage device; two ends of the water storage pipe (14) are respectively fixedly connected to two transmission belts (10); and the plurality of spray heads (15) are arranged at equal intervals below the water storage pipe (14) and are connected to the water storage pipe (14).

2. The hydroponic method of giant grass according to claim 1, characterized in that: The steps include: S1, take giant fungus grass and cut it into 6 cm giant fungus grass bamboo joints, and leave one tooth in the giant fungus grass bamboo joints; S2, soaking the giant fungus grass bamboo joint in rooting solution for 4 hours; The rooting solution is: 0.1 mg / L ferrous sulfate + 50 ppm indolebutyric acid + 1 ppm naphthylacetic acid + 0.1 mg / L pyrocatecholide; S3, placing the giant fungus grass bamboo joint soaked in rooting liquid into a giant fungus grass bamboo joint growth device, wherein the temperature of the giant fungus grass bamboo joint growth device is 33°C and the humidity is 70% rh; a sponge matrix is ​​provided in the giant fungus grass bamboo joint growth device, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix; S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist; S5. Change the water every 2.5 days to keep the water clean; S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 8 days in the later period; The nutrient solution is: sodium nitrophenolate 0.01 mg / L+99% glucose 0.2 mg / L+allicin 0.15 mg / L+humic acid 0.02 mg / L; S7. Harvest.

3. The hydroponic method of giant grass according to claim 1, characterized in that: The steps include: S1, take giant fungus grass and cut it into 5 cm giant fungus grass bamboo joints, and leave one tooth in the giant fungus grass bamboo joints; S2, soaking the giant fungus grass bamboo joint in rooting solution for 3 hours; The rooting solution is: ferrous sulfate 0.08 mg / L + indolebutyric acid 45 ppm + naphthylacetic acid 0.8 ppm + tyrosinol 0.08 mg / L; S3, putting the giant fungus grass bamboo joint soaked in the rooting liquid into a giant fungus grass bamboo joint growth device, the temperature of the giant fungus grass bamboo joint growth device is 30°C, and the humidity is 60% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix; S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist; S5. Change the water every 2 days to keep the water clean; S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 6 days in the later period; The nutrient solution is: sodium nitrophenolate 0.008 mg / L+99% glucose 0.1 mg / L+allicin 0.1 mg / L+humic acid 0.01 mg / L; S7. Harvest.

4. The hydroponic method of giant grass according to claim 1, characterized in that: The steps include: S1, take giant fungus grass and cut it into 8 cm giant fungus grass bamboo joints, and the giant fungus grass bamboo joints have one tooth left; S2, soaking the giant fungus grass bamboo joint in rooting solution for 5 hours; The rooting solution is: 0.12 mg / L ferrous sulfate + 55 ppm indolebutyric acid + 1.2 ppm naphthylacetic acid + 0.12 mg / L pyrocatecholide; S3, putting the giant fungus grass bamboo joint soaked in rooting liquid into a giant fungus grass bamboo joint growth device, the temperature of the giant fungus grass bamboo joint growth device is 35°C, and the humidity is 75% rh; the giant fungus grass bamboo joint growth device is provided with a sponge matrix, and the giant fungus grass bamboo joint is placed in the giant fungus grass bamboo joint growth device by vertically inserting it into the sponge matrix; S4. Add water to the giant fungus grass bamboo growth chamber every day to keep the sponge substrate moist; S5. Change the water every 3 days to keep the water clean; S6. After 5 days, spray the nutrient solution on the giant fungus grass bamboo joints, leaves and the sponge matrix of the giant fungus grass bamboo joint growth device once, and spray the nutrient solution every 10 days in the later period; The nutrient solution is: sodium nitrophenolate 0.012 mg / L+99% glucose 0.3 mg / L+allicin 0.2 mg / L+0.03 mg / L humic acid; S7. Harvest.

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