CN114532200B - Passion fruit water seedling cultivation method - Google Patents
Passion fruit water seedling cultivation method Download PDFInfo
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- CN114532200B CN114532200B CN202210389517.9A CN202210389517A CN114532200B CN 114532200 B CN114532200 B CN 114532200B CN 202210389517 A CN202210389517 A CN 202210389517A CN 114532200 B CN114532200 B CN 114532200B
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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
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G2/00—Vegetative propagation
- A01G2/10—Vegetative propagation by means of cuttings
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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 passion fruit water seedling cultivation method, which comprises the following steps: s1, soaking and sterilizing an appliance for seedling culture, comprising a floating type cutting fixing block and a cultivation box; cutting the cutting slips, at least disinfecting the cuts of the cutting slips, and airing after disinfecting; s2, taking a floating cutting fixing block capable of floating or being fixed on water, wherein the floating cutting fixing block is provided with at least one clamping structure, pressing the cutting into the clamping structure, putting the cutting into a cultivation box, controlling the temperature of a water culture solution to be 18-25 ℃ and the air humidity to be 70-80%, and allowing a part of the cutting to be inserted into water to generate a proper amount of root growth points. The invention can rapidly promote the rooting of the passion fruit cutting shoots and accelerate the seedling breeding of passion fruits.
Description
Technical Field
The invention relates to the technical field of passion fruit planting, in particular to a passion fruit water seedling cultivation method.
Background
Passion fruit (academic name: passiflora edulis Sims) is a grassy vine plant of the genus Passiflora of the family Passiflora, which is escaped from a mountain jungle at an altitude of 180-1900 m. The Lissajous islands of Yuan-Chen are widely planted in tropical and subtropical areas. The fruit can be eaten raw or used as vegetable or feed. The recipe has the actions of being excited and strengthening. The pulp contains juice, and can be added with heavy calcium carbonate and sugar to make into aromatic and delicious beverage, or added into other beverages to improve beverage quality. The seeds squeeze oil, can be used for eating, soap making, paint making and the like. The flower is big and beautiful, and can be used as ornamental plants in a garden. Is a typical tropical subtropical plant of Passiflora, the whole body is precious, and is an excellent garden plant integrating flower, leaf and fruit viewing, eating, health care, beauty treatment and medical use and an economic plant which is worth popularizing.
Current techniques for raising passion fruit seedlings include seed raising, grafting raising, tissue culture raising, and cutting raising. The cutting seedling is asexual propagation, can keep the excellent characters of the female parent, is fast in growth, early in fruiting and low in cost, so that the cutting seedling is a main seedling method of passion fruits at present. At present, cutting seedling raising of passion fruit is generally soil cultivation, and the method is to directly insert cut branches of passion fruit into soil or put into a nutrition bag for rooting seedling raising, and the method has the defects of slow rooting, low seedling raising efficiency, high labor cost and serious environmental damage in the production process, and can be completed only by 4-6 months. Although some water culture seedling raising is performed, the invention patent application "passion fruit water culture cutting seedling raising method" with publication number of CN110367059A discloses: cutting off passion fruit branches with 2-4 axillary buds, cutting off leaves on the 2-3 lowest bud nodes, reserving the leaves and axillary buds on the 1-2 bud nodes as passion fruit cutting seedlings, covering the mouth of a beaker where sterile nutrient solution is located with gauze or hard paper sheets and the like, and immersing the bud nodes in the sterile nutrient solution; this method has the following disadvantages: (1) In the prior art, the nutrient solution is prepared by taking soil or firing plant ash on site and sterilizing, so that the cost is increased in comparison with time consumption, the efficiency is low, and meanwhile, the soil taking or the plant ash firing can possibly cause environmental pollution and the like; (2) The passion fruit cutting is prepared by cutting 2-3 bud sections, cutting off leaves on 1-2 bud sections below, and retaining leaves and axillary buds on 1 bud section above, so that the bud sections are slightly wasted, the working procedures are increased, the cost is increased, and the efficiency is reduced; (3) The passion fruit cutting slips are required to be placed into glassware such as conical flasks filled with culture solution after full sterilization, the number of cutting is limited, the occupied space is large, a large amount of nutrient solution is required to be provided in each glassware, and therefore cost, time consumption and efficiency are increased; (4) The whole process must be carried out in a sterile environment, meaning that only in laboratory or small area seedlings are grown, and the operability is not strong. Therefore, a new practical and easy-to-operate water planting cutting seedling method is very necessary to be developed for rapid propagation of passion fruit seedlings.
Disclosure of Invention
The invention discloses a passion fruit water seedling cultivation method which can rapidly promote rooting of passion fruit cutting slips and accelerate seedling breeding of passion fruits.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a passion fruit water seedling cultivation method comprises the following steps:
s1, soaking and sterilizing the seedling raising devices, including floating cutting fixing blocks and cultivation boxes; cutting the cutting slips, at least disinfecting the cuts of the cutting slips, and airing after disinfecting;
s2, taking a floating cutting fixing block capable of floating or being fixed on water, wherein the floating cutting fixing block is provided with at least one clamping structure, cutting is pressed into the clamping structure and placed into a cultivation box, the temperature of a water culture solution is 18-25 ℃, the air humidity is 70-80%, and a proper amount of root growth points are generated when the cutting is inserted into water.
Further, the selecting step of the cutting includes: and (3) taking robust branches without plant diseases and insect pests below one year, cutting a section of cutting with 9-12 cm and a leaf and axillary bud, and cutting half of the leaf.
In the step S1, a 0.1-0.2 wt% potassium permanganate solution is used for disinfecting the cutting slips, and the cutting slips are dried after disinfection. It should be noted that, the use of 0.1-0.2 wt% potassium permanganate solution is a preferred mode, and other sterilizing solutions, such as carbendazim, may also be used.
Furthermore, one end of the cutting notch is inserted into the water culture solution for 1-2 cm.
Further, 0.2-1wt% of a nutrient is added into the water culture solution, and the nutrient comprises the following components in parts by weight: 2.0-50.0% of indolebutyric acid, 2.0-3.0% of naphthylacetic acid, 2.0-10.0% of other trace elements, and the balance of amino acid, wherein the amino acid is not less than 10%;
and 0.05-0.2wt% of salicylic acid Mei Suan and 0.05-0.2wt% of compound sodium nitrophenolate are also added into the water body culture solution.
Further, at least 2 oxygenation pumps of 1.5L/min are arranged in each 10-20L of water culture solution to perform oxygenation for 8-12 hours per day.
Further, in the step S2, the cutting slip avoids direct irradiation strong light, and the cultivation box is placed in a place environment with sufficient scattered light and good ventilation; and setting a shading net with the shading degree of 50-70% in summer high-temperature weather to shade light.
Further, the clamping structure comprises a clamping groove which is opened from the side face of the floating cutting fixing block, and the width of the clamping groove is smaller than the diameter of the passion fruit cutting.
Still further, the clamping structure further comprises a pressing plate movable reserved groove, a movable block is arranged between the pressing plate movable reserved groove and the clamping groove, the movable block can elastically move, and the width of the movable block is 0.5-1.0 cm.
Further, the floating type cutting fixing block comprises a fixing block body, and the fixing block body is made of a foam plate or a foam plate.
The passion fruit water seedling cultivation method has the following advantages:
(1) When the passion fruit cutting slips are manufactured, only one cutting slip with one leaf and one axillary bud is needed to be cut directly, the utilization rate of passion fruit branches is high, and the processing is convenient.
(2) By adopting the method, a plurality of clamping structures can be arranged on one floating cutting fixing block, and a plurality of floating cutting fixing blocks are arranged on one cultivation box, so that a plurality of passion fruit cutting can be cultivated in one cultivation box at the same time, the operation is convenient, the occupied space is small, the seedling raising efficiency is high, and the large-area rooting cultivation of passion fruit cutting is convenient to realize.
(3) By adopting the method, under the conditions that the temperature of the water culture solution is 18-25 ℃ and the air humidity is 70-80%, a large number of root growth points can be germinated after the cutting slips are inserted into water for 7-15 days, the rooting rate is 80-95%, the cutting slips can be removed from the water culture box after rooting, and the cutting slips can be put into a nutrition bag or directly moved to a field for seedling cultivation in the next step, wherein the survival rate can reach 90-95%, so that the seedling breeding of passion fruits can be accelerated.
(4) According to the floating type cutting fixing block, the foam plate or the foam plate is adopted to manufacture the floating type cutting fixing block, the foam plate or the foam plate is cut into the clamping groove with the side face open, and as the foam plate or the foam plate has certain elasticity and flexibility, when the passion fruit cutting is clamped and fixed, the passion fruit cutting is pressed into the clamping groove, so that the passion fruit cutting can be well fixed, and a breathing space is reserved at one side of the clamping groove; in addition, the movable reserving groove of the pressing plate is preferably added, so that a space is reserved for the elastic movement of the movable block, the clamping groove for clamping the passion fruit cutting slips has enough change space, the cutting slips can be conveniently pressed in, the movable block can be deformed according to the requirement, and the cutting slips can be better clamped to prevent the cutting slips from being injured. Generally, the width of the clamping groove and the movable reserving groove of the pressing plate is preferably 0.9-1.3 cm.
Drawings
Fig. 1 is a schematic perspective view of a cultivation box and a floating branch fixing block according to an embodiment of the present invention;
fig. 2 is a schematic view of one construction of a floating shoot fixing block according to an embodiment of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 2;
FIG. 4 is a schematic view of a cultivation box provided with an adjustable heating device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a cultivation box provided with a heating device and an oxygenation device according to an embodiment of the present invention;
FIG. 6 is a schematic view of a cultivation box provided with a heating device, an oxygenation device and a circulating water pump according to the embodiment of the invention;
FIG. 7 is a schematic view of a cultivation box provided with a heating device, an oxygenation device, a circulating water pump and an atomization device according to the embodiment of the invention;
FIG. 8 is a schematic view of the structure of a stand of an atomizer according to an embodiment of the present invention;
FIG. 9 is a photograph of the 7 th day of the cutting seedling in example 1;
FIG. 10 is an enlarged photograph of the initiation of expansion crack on day 7 of the seedling raising of the cutting in example 1;
FIG. 11 is a photograph of 10 th day rooting of cutting seedlings in example 1;
FIG. 12 is an enlarged photograph of rooting on day 10 of the cutting seedling in example 1;
FIG. 13 is a set of photographs of cuttings from day 15 rooting in example 1;
FIG. 14 is another set of photographs of cuttings grown on day 15 rooting in example 1.
In the figure, cultivation case 1, floating cutting fixed block 2, fixed block body 20, clamping structure 21, movable block 210, clamping groove 211, clamp plate activity reservation groove 212, adjustable heating device 3, oxygenation pump 4, circulating water pump 5, atomizing device 6, atomizing device support 7, U-shaped buckle 70, horizontal pole 71.
Detailed Description
The present invention is further illustrated below with reference to specific examples, but the scope of the present invention is not limited to the following examples.
Example 1
A passion fruit water seedling cultivation method comprises the following steps:
s1, soaking and sterilizing the seedling raising device comprising a floating type cutting fixing block 2 and a cultivation box 1 by using 0.1wt% potassium permanganate solution; taking robust branches without plant diseases and insect pests below one year, shearing a section of cutting with sharp scissors, leaving a blade and an axillary bud, cutting half of the blade, sterilizing the cutting, placing into 0.1wt% potassium permanganate solution for sterilization, cleaning with clear water, placing in a cool place for airing, and airing a cutting opening of the cutting;
s2, taking a floating cutting fixing block 2 capable of floating on water, wherein the floating cutting fixing block 2 is provided with at least one clamping structure 21, pressing the cutting into the clamping structure 21, and placing the cutting into the cultivation box 1. Referring to fig. 1 to 3, the floating-type cutting fixing block 2 selected in this embodiment includes a fixing block body 20, the fixing block body 20 is made of a foam plate, the thickness of the foam plate is 1 to 2cm, the cutting length is slightly smaller than the width of the cultivation box, the width is 5 to 10cm, clamping structures 21 are arranged at two side edges of the fixing block body 20, the clamping structures 21 are selectively arranged at two side edges for more conveniently maintaining balance, or of course, the fixing block body 20 is fixed in other modes, the clamping structures 21 include a clamping groove 211 which is opened from the side surface of the floating-type cutting fixing block 2, the width of the clamping groove 211 is smaller than the diameter of a passion cutting to fix the passion cutting, the clamping structures 21 further include a pressing plate movable reserved groove 212, the pressing plate movable reserved groove 212 and the clamping groove 211 are provided with movable blocks 210, the movable blocks 210 can elastically move, the width is 0.5 to 1.0cm, the pressing plate movable reserved groove 212 is used for more conveniently maintaining balance of the movable blocks 210, and the clamping grooves can be conveniently clamped by enough to prevent the passion cutting from being deformed according to the design, and the deformation of the cutting needs. Generally, the width of the clamping groove and the movable reserving groove of the pressing plate is preferably 0.9-1.3 cm.
The cultivation box 1 is filled with a water body culture solution, and 0.5wt% of a nutrient is added into the water body culture solution, wherein the nutrient consists of the following components in percentage by weight: 50.0% of indolebutyric acid, 2.5% of naphthylacetic acid, and other trace elements Zn+B+Mn+Ga+Gu+Fe5.0%, with the balance being amino acid; the water culture solution is also added with 0.1 weight percent of salicylic acid Mei Suan and 0.1 weight percent of compound sodium nitrophenolate.
One end of the cutting blade bud-free incision is inserted into water for 1-2 cm, the cutting blade is gently rotated to adjust the direction of each cutting blade, the overlapping among the blades is reduced as much as possible, and each blade can be uniformly illuminated.
Controlling the temperature of the water culture solution to be 18-25 ℃ and the air humidity to be 70-80%, and setting 2 oxygenation pumps 4 with the concentration of 1.5L/min in each 15L of the water culture solution to perform oxygenation for 8-12 hours per day.
The cutting is prevented from direct irradiation strong light, and the cultivation box 1 is placed in a place environment with sufficient scattered light and good ventilation; and setting a shading net with the shading degree of 50-70% in summer high-temperature weather to shade light.
And a proper amount of root growth points are generated when the cutting shoots are inserted into water.
With the method of this example, on day 7, the part of the cutting that was immersed in the water culture began to swell and crack, as shown in fig. 9 and 10. On day 10, the cuttings began to observe significant rooting, as shown in fig. 11 and 12. On day 15, the length of the roots of the cuttings sprouting can reach 1.5cm, and the number of the roots exceeds 10 roots, as shown in fig. 13 and 14.
The rooting rate reaches 95%, the rooting medium can be removed from the water incubator after rooting, and the water incubator can be filled into a nutrition bag or directly moved to a field for seedling cultivation, and the survival rate can reach 95%.
Example 2
S1, soaking and sterilizing the seedling raising device comprising a floating type cutting fixing block 2 and a cultivation box 1 by using 0.1wt% potassium permanganate solution; taking robust branches without plant diseases and insect pests below one year, shearing a section of cutting slip with a blade and axillary buds left about 11cm by using sharp scissors, shearing half of the blade, sterilizing the cutting slip, putting into 0.1wt% potassium permanganate solution for sterilization, cleaning with clear water, putting into a cool place for airing, and airing a cutting slip notch;
s2, taking a floating cutting fixing block 2 capable of floating on water, wherein the floating cutting fixing block 2 is provided with at least one clamping structure 21, pressing the cutting into the clamping structure 21, and placing the cutting into the cultivation box 1. The floating-type plug fixing block 2 has the same structure as in example 1.
The cultivation box 1 is filled with a water body culture solution, and 0.6wt% of a nutrient is added into the water body culture solution, wherein the nutrient consists of the following components in percentage by weight: indolebutyric acid 40.0%, naphthylacetic acid 2.0%, other trace elements Zn+B+Mn+Ga+Gu+Fe8.0%, and the balance of amino acid; the water culture solution is also added with 0.08 weight percent of salicylic acid Mei Suan and 0.12 weight percent of compound sodium nitrophenolate.
One end of the cutting blade bud-free incision is inserted into water for 1.5-2 cm, and the cutting blade is gently rotated to adjust the direction of each cutting blade, so that the overlapping among the blades is reduced as much as possible, and each blade can be uniformly illuminated.
Controlling the temperature of the water culture solution to be 22-25 ℃ and the air humidity to be 70-80%, and setting 2 oxygenation pumps 4 with the concentration of 1.5L/min in each 15L of the water culture solution to perform oxygenation for 8-10 hours per day.
The cutting is prevented from directly irradiating strong light, and the cultivation box 1 is placed in a place environment with sufficient scattered light and good ventilation.
And a proper amount of root growth points are generated when the cutting shoots are inserted into water.
By adopting the method of the embodiment, on the 9 th day, the part of the cutting shoot immersed in the water culture solution begins to expand and crack. On day 12, the cuttings began to observe significant rooting, as shown in fig. 11 and 12. On day 18, the length of the roots of the cutting shoots can reach 1.5cm, and the number of the roots exceeds 10.
The rooting rate reaches 90%, the rooting medium can be removed from the water incubator after rooting, and the water incubator can be filled into a nutrition bag or directly moved to a field for seedling cultivation, and the survival rate can reach 92%.
Example 3
S1, soaking and sterilizing the seedling raising device comprising a floating type cutting fixing block 2 and a cultivation box 1 by using 0.2wt% potassium permanganate solution; taking robust branches without plant diseases and insect pests below one year, shearing a section of cutting slip with a blade and axillary buds left about 11cm by using sharp scissors, shearing half of the blade, sterilizing the cutting slip, putting into 0.2wt% potassium permanganate solution for sterilization, cleaning with clear water, putting into a cool place for airing, and airing a cutting slip notch;
s2, taking a floating cutting fixing block 2 capable of floating on water, wherein the floating cutting fixing block 2 is provided with at least one clamping structure 21, pressing the cutting into the clamping structure 21, and placing the cutting into the cultivation box 1. The floating-type plug fixing block 2 has the same structure as in example 1.
The cultivation box 1 is filled with a water body culture solution, and 0.6wt% of a nutrient is added into the water body culture solution, wherein the nutrient consists of the following components in percentage by weight: 45.0% of indolebutyric acid, 3.0% of naphthylacetic acid, and other trace elements Zn+B+Mn+Ga+Gu+Fe2.0%, with the balance being amino acid; the water culture solution is also added with 0.08 weight percent of salicylic acid Mei Suan and 0.08 weight percent of compound sodium nitrophenolate.
One end of the cutting blade bud-free incision is inserted into water for 1.5-2 cm, and the cutting blade is gently rotated to adjust the direction of each cutting blade, so that the overlapping among the blades is reduced as much as possible, and each blade can be uniformly illuminated.
Controlling the temperature of the water culture solution to be 20-25 ℃ and the air humidity to be 70-80%, and setting 2 oxygenation pumps 4 with the concentration of 1.5L/min in each 15L of the water culture solution to perform oxygenation for 8-10 hours per day.
The cutting is prevented from directly irradiating strong light, and the cultivation box 1 is placed in a place environment with sufficient scattered light and good ventilation.
And a proper amount of root growth points are generated when the cutting shoots are inserted into water.
By adopting the method of the embodiment, on the 8 th day, the part of the cutting shoot immersed in the water culture solution begins to expand and crack. On day 10, the cuttings began to observe significant rooting. On day 16, the length of the roots of the cutting shoots can reach 1.5cm, and the number of the roots exceeds 10.
The rooting rate reaches 92%, the rooting medium can be removed from the water incubator after rooting, and the rooting medium can be filled into a nutrition bag or directly moved to a field for seedling cultivation, and the survival rate can reach 93%.
The embodiment also provides a water culture rapid root-promoting device which is convenient for controlling the temperature, the air humidity and the oxygenation capacity of the water culture medium, and the root-promoting device comprises a cultivation box 1, a floating cutting fixing block 2, an adjustable heating device 3, an oxygenation pump 4, a circulating water pump 5 and an atomization device 6.
The cultivating box 1 may be made of plastic or resin material. The incubator made of plastic or resin material is relatively light in weight, convenient to transport and store, and relatively low in cost.
As shown in fig. 4, an adjustable heating device 3 is provided in the cultivation box 1. The heating device 3 is used for maintaining the temperature of the culture solution, and the temperature of the culture solution is usually set at 18-25 ℃.
Preferably, as shown in fig. 5, an oxygenation pump 4 is further provided in the cultivation box 1. The oxygenation pump 4 can be purchased from an aquarium oxygenation machine and is used for supplying oxygen to the culture solution.
Preferably, as shown in fig. 6, a circulating water pump 5 is provided in the cultivation box 1 for agitating the flow of the water culture solution.
Preferably, as shown in fig. 7, the cultivating box 1 is further provided with an atomizing device 6 for supplying moisture to the space inside the cultivating box 1 to ensure a certain humidity; for the atomizing device 6, 1 ultrasonic atomizer with the atomizing amount of 500ml/h can be placed in 15L of water, and the ultrasonic atomizer is set to spray for 60 minutes every 1 hour in the daytime by using a microcomputer program-controlled switch, or an ultra-micro high-pressure spray head is arranged above the cutting, and the ultrasonic atomizer is set to spray for 1-2 minutes every 15-30 minutes in the daytime by using the microcomputer program-controlled switch.
The atomizing device is preferably an ultrasonic atomizer, and is fixedly arranged on the atomizing device bracket 7, specifically, the atomizing device comprises a cable and a floating atomizing head, one end of the cable is fixed on the atomizing device bracket 7, the atomizing head floats on the water culture solution and can rise and fall along with the change of the water level, so that the atomizing effect is not influenced by the change of the water level; referring to fig. 8, the atomizing device bracket includes a cross bar 71, and U-shaped buckles 70 are fixedly provided on both sides of the cross bar 71, respectively; the length of the cross bar 71 corresponds to the width of the cultivating box 1, and the U-shaped buckle 70 can be clamped on two side plates of the cultivating box 1. The structure is very flexible, can be disassembled and assembled at any time, is buckled when needed, is taken down when not needed, does not influence the placement of the floating type cutting fixing block 2, and improves the working efficiency.
Claims (2)
1. The passion fruit water seedling cultivating method is characterized by comprising the following steps:
s1, soaking and sterilizing an appliance for seedling culture, comprising a floating type cutting fixing block and a cultivation box; cutting the cutting slips, at least disinfecting the cuts of the cutting slips, and airing after disinfecting;
s2, taking a floating cutting fixing block capable of floating or being fixed on water, wherein the floating cutting fixing block is provided with at least one clamping structure, cutting is pressed into the clamping structure and placed into a cultivation box, the temperature of a water culture solution is 20-25 ℃, the air humidity is 70-80%, and a proper amount of root growth points are generated when the cutting is inserted into water;
in step S1, the cutting step includes: taking robust branches without plant diseases and insect pests below one year, shearing a section of cutting with 9-12 cm and a leaf and axillary bud, and shearing half of the leaf;
the cutting is disinfected by using 0.1-0.2 wt% of potassium permanganate solution;
one end of the cutting edge is inserted into the water culture solution for 1-2 cm;
the water body culture solution is added with 0.2-1wt% of nutritional agent, and the nutritional agent comprises the following components in parts by weight: 2.0-50.0% of indolebutyric acid, 2.0-3.0% of naphthylacetic acid, 2.0-10.0% of other trace elements, and the balance of amino acid, wherein the amino acid is not less than 10%;
the water body culture solution is also added with 0.05-0.2wt% of salicylic acid Mei Suan and 0.05-0.2wt% of compound sodium nitrophenolate;
the clamping structure comprises a clamping groove which is opened from the side surface of the floating cutting fixing block, and the width of the clamping groove is smaller than the diameter of the passion fruit cutting;
the clamping structure further comprises a pressing plate movable reserved groove, a movable block is arranged between the pressing plate movable reserved groove and the clamping groove, the movable block can elastically move, and the width of the movable block is 0.5-1.0 cm;
the floating cutting fixing block comprises a fixing block body, wherein the fixing block body is made of a foam plate or a foam plate;
an adjustable heating device, an oxygenation pump, a circulating water pump and an atomization device are also arranged in the cultivation box; the adjustable heating device is used for maintaining the temperature of the water body culture solution; at least 2 oxygenation pumps of 1.5L/min are arranged in each 10-20L of water culture solution to perform oxygenation for 8-12 hours per day; the circulating water pump is used for stirring the flow of the water culture solution; the atomizing device is an ultrasonic atomizer and comprises a cable and a floating atomizing head, one end of the cable is fixed on an atomizing device bracket, the atomizing head floats on the water body culture solution, the atomizing device bracket comprises a cross rod, and U-shaped buckles are respectively and fixedly arranged on two sides of the cross rod; the length of the transverse rod corresponds to the width of the cultivation box, and the U-shaped buckle can be clamped on the two side plates of the cultivation box.
2. The passion fruit water rearing seedling method according to claim 1, characterized in that:
in the step S2, the cutting is prevented from directly irradiating strong light, and the cultivation box is placed in a place environment with sufficient scattered light and good ventilation; and setting a shading net with the shading degree of 50-70% in summer high-temperature weather to shade light.
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