A device and method for spraying exogenous hormones before corn flowering

Abstract

The present invention relates to a pre-flowering exogenous hormone spraying device for corn, wherein a liquid storage chamber is provided inside the backpack spraying box, an exogenous hormone box is installed at the lower end of the backpack spraying box, an exogenous hormone storage chamber is provided inside the exogenous hormone box, and the lower end surfaces of the liquid storage chamber and the exogenous hormone storage chamber are both arranged as arc-shaped surfaces gathered toward the middle, a liquid outflow pipe is installed at the lower end of the liquid storage chamber, an exogenous hormone suction pipe is arranged in the middle of the exogenous hormone storage chamber, the exogenous hormone suction pipe and the liquid outflow pipe are both connected to a mixing pipe, the mixing pipe is connected to a mixing mechanism, and the mixing mechanism is connected to an exogenous hormone outlet pipe. Before use, liquid and high-concentration, paste-like / ointment-like exogenous hormone dispersion are temporarily diluted to the actual concentration used, and are homogenized by a mixing mechanism with a spiral flow channel. The present invention solves the problem that the exogenous hormones in the current exogenous hormone spraying are not prepared and used immediately, and are easy to deteriorate, resulting in reduced or lost activity.

Description

Technical Field

[0001] The invention relates to the field related to exogenous hormone spraying, in particular to a device for spraying exogenous hormones before corn anthesis and a spraying method thereof. Background Art

[0002] Plant hormones are a type of organic substance produced by the metabolism of plants themselves. They move from the site of production to the site of action. They are trace substances that have obvious physiological effects at extremely low concentrations. They are also called natural plant hormones or endogenous plant hormones. They regulate the growth, development and differentiation of plants separately or in coordination in terms of cell division and elongation, tissue and organ differentiation, flowering and fruiting, maturity and aging, dormancy and germination, and in vitro tissue culture. The flexibility and diversity of this regulation can be achieved by changing the concentration and ratio of exogenous hormones, thereby changing the level and balance of endogenous hormones. With the development of biological science and technology, the production of crops that used to rely on the weather has gradually developed towards scientific development. By artificially spraying certain exogenous hormones to change the level and balance of endogenous hormones in plants, plant yields can be increased and the properties of production products can be changed.

[0003] For the artificial spraying of exogenous hormones, a backpack spraying structure is generally used. Because exogenous hormones are generally solid, pure water and dispersants need to be added to make them into liquid before spraying to complete the spraying work. Therefore, before spraying in the field, the exogenous hormones need to be dissolved to make them into liquid, and then poured into the backpack spraying structure. There is a long time interval between preparation and final spraying. Especially when the concentration is relatively thin, if the prepared exogenous hormones are left for a long time, in the high ambient temperature in summer, it is easy to cause them to deteriorate and their biological activity to weaken or even be lost. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The purpose of the present invention is to provide a device for spraying exogenous hormones before corn flowering and a spraying method thereof, so as to solve the problems that the exogenous hormones are not prepared and used immediately, there is a long time interval between preparation and spraying, the spraying operation is not friendly and flexible enough, the amount of spraying is not easy to control, and there is a lot of waste of exogenous hormones.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] The present invention provides a device for spraying exogenous hormones before corn bloom, comprising a backpack spray box (1), wherein: a liquid storage chamber (16) is provided on one side of the interior of the backpack spray box (1), and an exogenous hormone box (14) is installed at the lower end of the backpack spray box (1);

[0009] The exogenous hormone box (14) is provided with an exogenous hormone storage chamber (17) inside, and the lower end surfaces of the liquid storage chamber (16) and the exogenous hormone storage chamber (17) are both provided with conical surfaces that allow materials to gather toward the middle, a liquid outflow pipe (18) is installed at the lower end of the liquid storage chamber (16), and an exogenous hormone extraction pipe (19) is provided in the middle of the exogenous hormone storage chamber (17), one end of the exogenous hormone extraction pipe (19) extends into the exogenous hormone box (14) and the other end is connected to the liquid outflow pipe (18); a mixing pipe (21) is installed on one side of the liquid outflow pipe (18);

[0010] A mixing mechanism (4) is installed on the other side of the backpack spray box (1), a mixing uniform chamber (24) is arranged in the mixing mechanism (4), a mixing pipe (21) is connected to the inside of the mixing uniform chamber (24), a spiral mixing mechanism (23) is installed in the inside of the mixing uniform chamber (24), and the spiral mixing mechanism (23) comprises an intermediate column (25), a spiral plate (26) and a flow block (27); the intermediate column (25) is located in the middle of the spiral plate (26), and the flow block (27) is provided in the mixing mechanism (4). The flow block (27) is arranged on the surface of the spiral plate (26), and the spiral plate (26) and the middle column (25) are fixed to the inner wall of the mixing chamber (24). The upper end of the mixing mechanism (4) is provided with an exogenous hormone outlet pipe (5), and the exogenous hormone outlet pipe (5) is fixed to the backpack spray box (1) through a fixing block (7). The other end of the exogenous hormone outlet pipe (5) is connected to a delivery pump (22), and one side of the delivery pump (22) is connected to a spray hose (9).

[0011] According to a preferred embodiment of the present invention, a one-way valve (20) is installed between the mixing tube (21) and the liquid outflow tube (18) and between the exogenous hormone extraction tube (19) and the liquid outflow tube (18).

[0012] According to a preferred embodiment of the present invention, the other end of the spray hose (9) is connected to an extended spray rod (28), and the extended spray rod (28) includes an extended rod (31), a handle (29) and a fixed clamp (32); the fixed clamp (32) is fixedly arranged at one end of the extended rod (31) close to the handle (29); and one end of the fixed clamp (32) is fixedly connected to the extended rod (31), and the other end clamps the spray hose (9); with the help of the fixed clamp (32), one end of the spray hose (9) is fixed to the extended rod (31).

[0013] According to a preferred embodiment of the present invention, the interior of the extension rod (31) is a hollow cylinder, and a screw (37) is arranged in the hollow cylinder; a hand wheel (30) is installed at the other end of the handle (29), the hand wheel (30) is connected to the screw (37) for synchronous rotation, and the screw (37) is connected to the handle (29) through a bearing;

[0014] One side of the extension rod (31) is provided with an elongated groove arranged along its length direction; the lead screw (37) is combined with a plurality of nuts, each of which is connected to a movable clamping member (33); the nut located at the uppermost end of the lead screw (37) is connected to a movable spraying clamping member (34); the outer end of each movable clamping member (33) extends from the elongated groove and is used to clamp the middle part of the fixed spraying hose (9); the outer end of the movable spraying clamping member (34) extends from the elongated groove and is used to clamp the spraying hose (9) near the end, and the end of the spraying hose (9) is connected to a spray head (36); the positions of the spraying hose (9) and the spray head (36) are moved by rotating the hand wheel (30) to meet the spraying requirements at different heights.

[0015] The number of the movable clamping members (33) is 2-5, and each movable clamping member (33) is an Ω-shaped structure composed of two metal sheets facing each other.

[0016] According to a preferred embodiment of the present invention, the lead screw (37) includes a smooth rod (38), which is arranged on one side inside the extension rod (31), and the length of the smooth rod (38) is equal to the total length of the three movable clamping members (33).

[0017] According to a preferred embodiment of the present invention, a spray pipe (35) is provided between the spray hose (9) and the spray head (36); the movable spray clamp (34) is used to clamp the spray pipe (35), and the spray pipe (35) is a hard pipe, and its outer diameter is greater than or equal to the inner diameter of the spray hose (9), so that the spray pipe (35) is sleeved inside the spray hose (9) and is tightly fitted, and a sealant is used at the joint to strengthen the sealing connection; the spray pipe (35) has a 90° bend and is connected to the spray head (36), and the spray surface of the spray head (36) is parallel to the extension rod (31).

[0018] According to a preferred embodiment of the present invention, a load-reducing silicone backboard (10) is provided on the back of the backpack spray box (1), and the load-reducing silicone backboard (10) is fixedly connected to the backpack spray box (1); the middle area of ​​the surface of the load-reducing silicone backboard (10) is set as a concave surface, and an anti-slip massage bag (11) is provided on the concave surface, and silicone blocks (12) are provided on both sides of the massage bag (11); a soft waist pillow bag (13) is provided at the lower end between the backpack spray box (1) and the load-reducing silicone backboard (10), and the soft waist pillow bag (13) is adhesively connected to the load-reducing silicone backboard (10); the upper and lower ends of the end face of the backpack spray box (1) are connected to a shoulder strap (6), and the two ends of the shoulder strap (6) are located between the load-reducing silicone backboard (10) and the backpack spray box (1).

[0019] According to a preferred embodiment of the present invention, an external equipment box (8) is provided at the lower end of one side of the backpack spray box (1), and the delivery pump (22) is located inside the external equipment box (8), and the spray hose (9) passes through the external equipment box (8) and extends to the outside, and an external hormone box charging cover (15) is provided on one side of the upper end of the exogenous hormone box (14), and the exogenous hormone box charging cover (15) is connected to the exogenous hormone box (14) by threads, and a liquid charging cover (2) is provided on one side of the upper end of the backpack spray box (1), and the liquid charging cover (2) is connected to the backpack spray box (1) by threads, and a handle (3) is provided in the middle of the upper end of the backpack spray box (1); the exogenous hormone is stored in the exogenous hormone box (14) in the form of a highly concentrated liquid, paste or ointment.

[0020] According to a preferred embodiment of the present invention, a manual air pump is provided at the exogenous hormone box (17) to increase the pressure of the exogenous hormone box (17) to push the exogenous hormone to flow into the exogenous hormone extraction tube (19). Alternatively, a small pump is provided between the exogenous hormone extraction tube (19) and the mixing tube (21), and the small pump is used to extract the exogenous hormone in the exogenous hormone box (17). The small pump is controlled in linkage with the delivery pump (22), and there is a predetermined delay relative to the start of the delivery pump (22).

[0021] The present invention also provides a method for spraying exogenous hormones before corn anthesis, which comprises the following steps:

[0022] Step 1: Select a sunny and windless afternoon between 17:00 and 18:00 for spraying;

[0023] Step 2: Open the liquid feeding cover (2) to add pure water and Tween-20 into the liquid storage chamber (16), open the exogenous hormone box feeding cover (15) to add highly concentrated liquid, paste or ointment exogenous hormone into the exogenous hormone storage chamber (17);

[0024] The highly concentrated liquid, paste or ointment exogenous hormone is prepared by homogenizing and stirring a solid exogenous hormone and a small amount of liquid to improve fluidity and facilitate absorption by the exogenous hormone absorption tube (19);

[0025] Step 3: The operator rotates the hand wheel (30), and the movable spraying clamp (34) is driven to slide by the lead screw (37), so that the spray head (36) is moved above the corn plant to be sprayed, so that the extended spraying rod (28) is at an angle of 45° to the horizontal;

[0026] Step 4: Turn on the delivery pump (22), and absorb the pure water and Tween-20 in the liquid storage chamber (16) and the exogenous hormone in the exogenous hormone storage chamber (17) into the spiral mixing mechanism (23), mix them, and then enter the spray head (36) through the spray hose (9) for spraying;

[0027] Step 5: The operator completes spraying of the corn plants in the two surrounding lines, and then rotates the hand wheel (30) to move the spray head (36) to the top of the corn plants in the two outer lines that need to be sprayed, and sprays until all the corn plants are sprayed;

[0028] Step 6: If there is rainfall within 24 hours after spraying, re-spraying should be carried out;

[0029] Step 7: Spray continuously for three days to complete all spraying work on the corn plants.

[0030] Wherein, the concentration of Tween-20 is 0.01%.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention has a liquid storage chamber and an exogenous hormone storage chamber in the backpack spray box, and the pure water additive and the exogenous hormone are stored separately. When preparing to spray in the corn field, the delivery pump is turned on, so that the exogenous hormone in the exogenous hormone storage chamber is adsorbed by the exogenous hormone suction tube under the action of adsorption force and mixed with the pure water and Tween additive in the liquid storage chamber, and enters the mixing chamber through the mixing tube. Because a spiral mixing mechanism is provided in the mixing chamber, the spiral plate of the spiral mixing mechanism is fixed to the middle column and the inner wall of the mixing chamber, so the mixing chamber The mixed liquid will move upward in a spiral, which is equivalent to stirring the pure water and the exogenous hormones during the spiral process. With the help of Tween-20 to dissolve, the pure water and the exogenous hormones are mixed. Because the spiral plate is also provided with a baffle, when the mixed liquid spiraling upward collides with the baffle at high speed, it has an impact effect. Under the continuous impact, i.e. the spiral effect, the mixed liquid is evenly mixed in the mixing chamber and is finally transported to the spray head position for spraying through a delivery pump, so that it can be prepared and used immediately, and the preparation amount and spraying amount are basically equal, and there is no problem of excessive waste.

[0034] (2) The present invention provides two one-way valves. When the single-position spraying is completed and the delivery pump switch is turned off, the mixed liquid in the spiral mixing mechanism will flow back and re-enter the mixing tube. The one-way valve at this position can prevent the mixed liquid that has begun to mix from entering the exogenous hormone storage chamber and contaminating the clean exogenous hormone. The one-way valve at the upper end of the exogenous hormone suction tube can prevent the liquid from entering the exogenous hormone storage chamber and contaminating the exogenous hormone. In this way, the liquid component and the exogenous hormone are completely separated. The exogenous hormone is pre-prepared into a highly concentrated liquid or a paste / ointment concentrate. It can be quickly mixed when spraying is required, and the stored exogenous hormone will not be contaminated when spraying is not required.

[0035] (3) In the present invention, the operator can drive the lead screw to rotate by turning the hand wheel, so the movable clamp and the movable spray clamp will slide accordingly under the action of the thread. Because the movable spray clamp is fixed with the spray pipe and the spray head, even if the extended spray rod is longer, the mobility of the spray head enables the spray head to spray the farthest corn plant within the spraying range of the extended spray rod, as well as the closer corn plant within the spraying range of the extended spray rod. Compared with the current extended spray rod, which is inconvenient to spray nearby plants, the present device is more convenient to spray and has a wider spraying range. The operator can spray the corn plants within the surrounding range while standing in one place, thereby reducing the operator's operating time. The solution of fixing the spray hose by the movable clamp enables the spray hose between the two movable clamps to bend or stretch accordingly during the movement of the movable spray clamp, and the problem of the spray hose falling to the ground will not occur when the movable spray clamp moves inward.

[0036] (4) In the present invention, a load-reducing silicone backboard is added to the back of the backpack spray box, and a massage bag, a silicone block and a soft waist pillow bag are arranged on the load-reducing silicone backboard, which can support the operator's back spine and waist position, reduce the operator's waist pressure caused by long-term standing and labor, and reduce the problem of back strain, thereby improving the operator's operating comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a front view of a device for spraying exogenous hormones before corn blooming according to the present invention;

[0038] Figure 2 It is a partial cross-sectional view of a device for spraying exogenous hormones before corn blooming according to the present invention;

[0039] Figure 3 It is a structural schematic diagram of the spiral mixing mechanism of the present invention;

[0040] Figure 4 It is a schematic diagram of the structure of the extended spray boom of the present invention;

[0041] Figure 5 It is a partial structural diagram of the interior of the extension rod of the present invention.

[0042] [Description of Reference Numerals]

[0043] 1. Backpack spray box; 2. Liquid feeding cover; 3. Handle; 4. Mixing mechanism; 5. Exogenous hormone outlet tube; 6. Strap; 7. Fixing block; 8. External equipment box; 9. Spray hose; 10. Load-reducing silicone backboard; 11. Massage bag; 12. Silicone block; 13. Soft waist pillow bag; 14. Exogenous hormone box; 15. Exogenous hormone box feeding cover; 16. Liquid storage chamber; 17. Exogenous hormone storage chamber; 18. Liquid outflow tube; 19. Exogenous Hormone absorption tube; 20. One-way valve; 21. Mixing tube; 22. Delivery pump; 23. Spiral mixing mechanism; 24. Mixing chamber; 25. Middle column; 26. Spiral plate; 27. Flow block; 28. Extended spray rod; 29. ​​Handle; 30. Handwheel; 31. Extension rod; 32. Fixed clamp; 33. Mobile clamp; 34. Mobile spray clamp; 35. Spray pipe; 36. Spray head; 37. Screw; 38. Smooth rod. DETAILED DESCRIPTION

[0044] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0045] See also Figure 1-2, is a preferred embodiment provided by the present invention: a device for spraying exogenous hormones before cornflowering, comprising a backpack spray box 1. A liquid storage chamber 16 is provided on one side of the interior of the backpack spray box 1, an exogenous hormone box 14 is installed at the lower end of the backpack spray box 1, an exogenous hormone storage chamber 17 is provided inside the exogenous hormone box 14, the exogenous hormone storage chamber 17 is made of an inert heat-insulating material, and the lower end surfaces of the liquid storage chamber 16 and the exogenous hormone storage chamber 17 are both provided as conical surfaces that allow the materials to gather toward the middle. A liquid outflow pipe 18 is installed at the lower end of the liquid storage chamber 16, an exogenous hormone suction pipe 19 is provided in the middle of the exogenous hormone storage chamber 17, the exogenous hormone suction pipe 19 passes through to the outside of the exogenous hormone box 14, and is connected and communicated with the liquid outflow pipe 18. A mixing pipe 21 is provided on one side of the liquid outflow pipe 18. A mixing mechanism 4 is installed on the other side of the backpack spray box 1 . A mixing uniformity chamber 24 is provided in the mixing mechanism 4 . A mixing pipe 21 is connected to the inside of the mixing uniformity chamber 24 .

[0046] See also Figure 3 As shown, a spiral mixing mechanism 23 is installed inside the mixing chamber 24, and the spiral mixing mechanism 23 includes a middle column 25, a spiral plate 26 and a flow block 27. The middle column 25 is located in the middle of the spiral plate 26, and the flow block 27 is evenly arranged on the surface of the spiral plate 26. The spiral plate 26 is fixed to the middle column 25 and the inner wall of the mixing chamber 24. When the mixed liquid moves upward along the spiral plate, the water and the exogenous hormone are fully stirred in the spiral process, and the pure water and the exogenous hormone are evenly mixed in combination with the surfactant effect of Tween-20.

[0047] like Figure 1 , 2 As shown, the upper end of the mixing mechanism 4 is provided with an exogenous hormone outlet pipe 5, which is fixed to the backpack spray box 1 through a fixing block 7, and the other end of the exogenous hormone outlet pipe 5 is connected to a delivery pump 22, and one side of the delivery pump 22 is connected to a spray hose 9, which is a rubber hose, resistant to corrosion and chemical substances, and has no effect on hormone activity. Figure 2 As shown, a one-way valve 20 is installed between the mixing tube 21 and the liquid outflow tube 18 and between the exogenous hormone extraction tube 19 and the liquid outflow tube 18. After a single spraying, when the delivery pump 22 switch is turned off, the mixed liquid in the spiral mixing mechanism 23 will flow back and re-enter the mixing tube 21. The one-way valve 20 at this position prevents the mixed liquid in the mixing tube 21 from flowing back, preventing the mixed liquid that has begun to mix from entering the exogenous hormone storage chamber and contaminating the clean exogenous hormone. The one-way valve 20 at the upper end of the exogenous hormone extraction tube 19 can prevent liquid from entering the exogenous hormone storage chamber 17 and contaminating the exogenous hormone, thereby completely separating the liquid component and the high-concentration exogenous hormone liquid, so that it can be quickly mixed and diluted when spraying is required, and the exogenous hormone stored when spraying is not required will not be contaminated or reduced in activity due to hydrolysis due to its high concentration.

[0048] See also Figure 1 and Figure 4 As shown, the other end of the spray hose 9 is connected to an extended spray rod 28. After the normal spray rod is extended, the nozzle cannot be adjusted, so the nearby plants need to be sprayed with elbows retracted, which is not convenient for the operator. The extended spray rod 28 includes an extended rod 31, a handle 29 and a fixed clamp 32. The extended rod 31 is located on one side of the fixed clamp 32, and the handle 29 is located on the other side of the fixed clamp 32. The extended rod 31, the handle 29 and the fixed clamp 32 are fixed adjacent to each other. Among them, the extended rod 31 is a hollow cylindrical structure, and a lead screw 37 is arranged inside it. A hand wheel 30 is installed at the other end of the handle 29. The hand wheel 30 is fixedly connected to the lead screw 37 for synchronous rotation, and the lead screw 37 is connected to the handle 29 and the fixed clamp 32 through bearings. A movable clamp 33 and a movable spray clamp 34 are arranged inside the extended rod 31 along the outer side of the lead screw 37. Among them, one end of each mobile clamping member 33 and mobile spraying clamping member 34 is connected to the lead screw 37 through a nut, the nut is screwed on the lead screw 37, and one side of the nut is welded or integrally connected to the mobile clamping member 33 and the mobile spraying clamping member 34. A side surface of the extension rod 31 is provided with an elongated groove extending along its length, and the mobile clamping member 33 and the mobile spraying clamping member 34 extend from the elongated groove to the outside to clamp the fixed spraying hose 9. Preferably, there are three mobile clamping members 33 for clamping the middle position of the fixed spraying hose 9, and there is one mobile spraying clamping member 34 for clamping the position near the end of the fixed spraying hose 9. The fixed clamping member 32, the mobile clamping member 33 and the mobile spraying clamping member 34 are respectively composed of two symmetrical metal sheets in an Ω shape, with the spraying hose 9 passing through the middle and the ends locked with bolts. When the hand wheel 30 is turned, the movable clamp 33 and the movable spray clamp 34 move up and down in the extension rod 31, driving the spray hose 9 to move up or down along the extension rod 31, so as to spray corn at different heights. The spray hose 9 is connected to the spray head 36 through a spray pipe 35, and the spray pipe 35 has a standard joint, which can quickly disassemble and replace the spray head 36, and the spray pipe 35 is made of hard material and is used to fix the direction of the spray head 36. The spray pipe 35 is hard, and even if it is bent, it will not affect the flow of the liquid, and it can also fix the direction of the spray head 36. The spray surface of the spray head 36 is parallel to the extension direction of the extension rod 31.

[0049] Combination Figure 5 As shown, the lead screw 37 includes a smooth rod 38 , which is disposed on one side of the extension rod 31 , and the length of the smooth rod 38 is equal to the total length of the three movable clamping members 33 .

[0050] Recombination Figure 1As shown, a load-reducing silicone backboard 10 is provided on the back of the backpack spray box 1, and the load-reducing silicone backboard 10 is fixedly connected to the backpack spray box 1. The surface of the load-reducing silicone backboard 10 facing the human body is set as a concave surface in the middle to meet the ergonomic principle of the human back. An anti-slip massage bag 11 is provided in the middle area of ​​the surface of the load-reducing silicone backboard 10, and silicone blocks 12 are provided on both sides of the massage bag 11. A soft waist pillow bag 13 is provided at the lower end between the backpack spray box 1 and the load-reducing silicone backboard 10, and the soft waist pillow bag 13 is adhesively connected to the load-reducing silicone backboard 10. The above structure can support the back spine and waist position of the operator, reduce the problem of excessive waist pressure and back strain of the operator caused by long-term standing and immediate labor, and improve the operating comfort of the operator. The upper and lower ends of the end face of the backpack spray box 1 are connected with shoulder straps 6, and the two ends of the shoulder straps 6 are located between the load-reducing silicone back plate 10 and the backpack spray box 1, so as to hide the joint part and avoid direct contact between the joint part and the shoulder and back bones of the operator, thereby making the carrying experience unpleasant.

[0051] like Figure 1 As shown, an external device box 8 is provided at the lower end of one side of the backpack spray box 1, and a delivery pump 22 is located inside the external device box 8, and a spray hose 9 passes through the external device box 8 and extends to the outside. An external hormone box charging cover 15 is provided at one side of the upper end of the exogenous hormone box 14, and the external hormone box charging cover 15 is connected to the exogenous hormone box 14 by threads. A liquid charging cover 2 is provided at one side of the upper end of the backpack spray box 1, and the liquid charging cover 2 is connected to the backpack spray box 1 by threads. A handle 3 is provided in the middle of the upper end of the backpack spray box 1.

[0052] Furthermore, a manual booster air pump may be provided in the exogenous hormone box 17 to assist in pushing the exogenous hormone to flow to the exogenous hormone extraction tube 19. Transparent windows are provided on the exogenous hormone box 14 and the exogenous hormone storage chamber 17, so that the amount of exogenous hormone can be observed from the outside. The control circuit portion of the delivery pump 22 is not described in detail here, and its switch may be provided on the handle 29. Alternatively, a small pump may be provided between the exogenous hormone extraction tube 19 and the mixing tube 21, and the small pump is specifically used to extract the exogenous hormone in the exogenous hormone box 17. The small pump and the delivery pump 22 are controlled in linkage, and there is a predetermined delay relative to the start of the delivery pump 22.

[0053] Working principle:

[0054] Select a sunny and windless afternoon at 17:00-18:00 for spraying, open the liquid feeding cover 2 to add pure water and Tween-20 into the liquid storage chamber 16, open the exogenous hormone box feeding cover 15 to add a high-concentration exogenous hormone concentrate (or an ointment or paste hormone made by adding a small amount of non-aqueous liquid in advance, which can be mixed with a small amount of antioxidant protective agent) into the exogenous hormone storage chamber 17. The operator rotates the hand wheel 30, and the movable spray clamp 34 is driven to slide by the lead screw 37 to move the spray head 36 to the top of the corn plant to be sprayed. During the movement of the movable spray clamp 34, the spray hose 9 between the two movable clamps 33 is bent or extended accordingly, so that the extended spray spray rod 28 is at a 45° angle to the horizontal. The delivery pump 22 is turned on, so that the exogenous hormone in the exogenous hormone storage chamber 17 is adsorbed by the exogenous hormone suction tube 19 under the action of adsorption force and mixed with the pure water and Tween-20 in the liquid storage chamber 16, and enters the uniform mixing chamber 24 through the mixing tube 21. Because the uniform mixing chamber 24 is provided with a spiral mixing mechanism 23, the spiral plate 26 of the spiral mixing mechanism 23 is fixed to the middle column 25 and the inner wall of the uniform mixing chamber 24, so the mixed liquid will spiral upward, and the spiral process is equivalent to stirring the pure water and the exogenous hormone. Under the action of the surfactant of Tween-20, the pure water and the exogenous hormone are mixed. When the spiral upward mixed liquid collides with the baffle block 27 at high speed, there is an impact effect. Under the continuous collision effect, that is, the spiral effect, the mixed liquid is mixed evenly in the uniform mixing chamber, and then enters the spray head 36 through the spray hose 9 for spraying. The operator uses this to spray the corn plants in the two surrounding routes, and turns the hand wheel 30 to move the spray head 36 to the top of the corn plants in the two outer routes that need to be sprayed for spraying (after a single spraying, when the delivery pump 22 switch is turned off, the mixed liquid in the spiral mixing mechanism 23 will flow back and re-enter the mixing tube 21. The one-way valve 20 at this position prevents the mixed liquid in the mixing tube 21 from flowing back, preventing the mixed liquid that has begun to mix from entering the exogenous hormone storage chamber and contaminating the clean exogenous hormone), until all corn plants are sprayed. If there is rainfall within 24 hours after spraying, supplementary spraying is carried out. Spraying is carried out for three consecutive days to complete all the spraying work of the corn plants.

[0055] Based on the above device, the present invention also provides a method for spraying exogenous hormones before corn anthesis, comprising the following steps:

[0056] Step 1: Select a sunny and windless afternoon between 17:00 and 18:00 for spraying;

[0057] Step 2: Open the liquid feeding cover 2 to add pure water and Tween-20 into the liquid storage chamber 16, open the exogenous hormone box feeding cover 15 to add high-concentration exogenous hormone concentrate (or paste-like or ointment-like concentrate) into the exogenous hormone storage chamber 17; the concentration of Tween-20 selected is 0.01%.

[0058] Step 3: The operator rotates the hand wheel 30, and the movable spraying clamp 34 is driven to slide by the lead screw 37, so that the spray head 36 is moved above the corn plant to be sprayed, so that the extended spraying rod 28 is at a 45° angle to the horizontal;

[0059] Step 4: Turn on the delivery pump 22 to absorb the pure water and Tween-20 in the liquid storage chamber 16 and the exogenous hormone in the exogenous hormone storage chamber 17 and enter the spiral mixing mechanism 23 for mixing and then enter the spray head 36 through the spray hose 9 for spraying;

[0060] Step 5: The operator finishes spraying the corn plants in the two surrounding lines, and then rotates the hand wheel 30 to move the spray head 36 to the top of the corn plants in the two outer lines that need to be sprayed, and sprays until all the corn plants are sprayed;

[0061] Step 6: If there is rainfall within 24 hours after spraying, re-spraying should be carried out;

[0062] Step 7: Spray continuously for three days to complete all spraying work on the corn plants.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A device for spraying exogenous hormones before corn bloom, comprising a backpack spray box (1), characterized in that: A liquid storage chamber (16) is provided on one side of the interior of the backpack spray box (1), and an exogenous hormone box (14) is installed at the lower end of the backpack spray box (1); The exogenous hormone box (14) is provided with an exogenous hormone storage chamber (17) inside, and the lower end surfaces of the liquid storage chamber (16) and the exogenous hormone storage chamber (17) are both provided with conical surfaces that allow materials to gather toward the middle, a liquid outflow pipe (18) is installed at the lower end of the liquid storage chamber (16), and an exogenous hormone extraction pipe (19) is provided in the middle of the exogenous hormone storage chamber (17), one end of the exogenous hormone extraction pipe (19) extends into the exogenous hormone box (14) and the other end is connected to the liquid outflow pipe (18); a mixing pipe (21) is installed on one side of the liquid outflow pipe (18); A mixing mechanism (4) is installed on the other side of the backpack spray box (1), a mixing uniform chamber (24) is arranged in the mixing mechanism (4), a mixing pipe (21) is connected to the inside of the mixing uniform chamber (24), a spiral mixing mechanism (23) is installed in the inside of the mixing uniform chamber (24), and the spiral mixing mechanism (23) comprises an intermediate column (25), a spiral plate (26) and a flow block (27); the intermediate column (25) is located in the middle of the spiral plate (26), and the flow block (27) is provided in the mixing mechanism (4). The flow block (27) is arranged on the surface of the spiral plate (26), the spiral plate (26) and the middle column (25) are fixed to the inner wall of the mixing chamber (24), the upper end of the mixing mechanism (4) is provided with an exogenous hormone outlet pipe (5), the exogenous hormone outlet pipe (5) is fixed to the backpack spray box (1) through a fixing block (7), the other end of the exogenous hormone outlet pipe (5) is connected to a delivery pump (22), and one side of the delivery pump (22) is connected to a spray hose (9); The other end of the spray hose (9) is connected to an extended spray rod (28), and the extended spray rod (28) comprises an extended rod (31), a handle (29) and a fixed clamp (32); the fixed clamp (32) is fixedly arranged at one end of the extended rod (31) close to the handle (29); one end of the fixed clamp (32) is fixedly connected to the extended rod (31), and the other end clamps the spray hose (9); one end of the spray hose (9) is fixed to the extended rod (31) by means of the fixed clamp (32); the interior of the extended rod (31) is a hollow cylinder, and a lead screw (37) is arranged in the hollow cylinder; the other end of the handle (29) is equipped with a hand wheel (30), the hand wheel (30) is synchronously rotatably connected with the lead screw (37), and the lead screw (37) is connected to the handle (29) through a bearing; One side of the extension rod (31) is provided with an elongated groove arranged along its length direction; the lead screw (37) is combined with a plurality of nuts, each of which is connected to a movable clamping member (33), and the nut located at the uppermost end of the lead screw (37) is connected to a movable spraying clamping member (34); the outer end of each movable clamping member (33) extends from the elongated groove and is used to clamp the middle part of the fixed spraying hose (9); the outer end of the movable spraying clamping member (34) extends from the elongated groove and is used to clamp the spraying hose (9) near the end, and the end of the spraying hose (9) is connected to a spray head (36); the positions of the spraying hose (9) and the spray head (36) are moved by rotating the hand wheel (30) to meet the spraying requirements at different heights; An external device box (8) is provided at the lower end of one side of the backpack spray box (1), and a delivery pump (22) is located inside the external device box (8), a spray hose (9) passes through the external device box (8) and extends to the outside, an external hormone box charging cover (15) is provided on one side of the upper end of the exogenous hormone box (14), and the exogenous hormone box charging cover (15) is connected to the exogenous hormone box (14) by threads, a liquid charging cover (2) is provided on one side of the upper end of the backpack spray box (1), and the liquid charging cover (2) is connected to the backpack spray box (1) by threads, and a handle (3) is provided in the middle of the upper end of the backpack spray box (1); the exogenous hormone is stored in the exogenous hormone box (14) in the form of a highly concentrated liquid, paste or ointment.

2. The device for spraying exogenous hormones before corn anthesis according to claim 1, characterized in that: One-way valves (20) are installed between the mixing tube (21) and the liquid outflow tube (18) and between the exogenous hormone extraction tube (19) and the liquid outflow tube (18).

3. The device for spraying exogenous hormones before corn anthesis according to claim 1, characterized in that: The lead screw (37) comprises a smooth rod (38), which is arranged at one side inside the extension rod (31), and the length of the smooth rod (38) is equal to the total length of the three movable clamping members (33).

4. The device for spraying exogenous hormones before corn anthesis according to claim 1, characterized in that: A spray pipe (35) is provided between the spray hose (9) and the spray head (36); the movable spray clamp (34) is used to clamp the spray pipe (35); the spray pipe (35) is a hard pipe, the outer diameter of which is greater than or equal to the inner diameter of the spray hose (9), so that the spray pipe (35) is sleeved inside the spray hose (9) and is tightly fitted, and a sealant is used at the joint to strengthen the sealing connection; the spray pipe (35) has a 90° bend and is connected to the spray head (36); the spray surface of the spray head (36) is parallel to the extension rod (31).

5. The device for spraying exogenous hormones before corn anthesis according to claim 1, characterized in that: The back of the backpack spray box (1) is provided with a load-reducing silicone backboard (10), and the load-reducing silicone backboard (10) is fixedly connected to the backpack spray box (1); the middle area of ​​the surface of the load-reducing silicone backboard (10) is set as a concave surface, and an anti-slip massage bag (11) is set on the concave surface, and silicone blocks (12) are set on both sides of the massage bag (11); a soft waist pillow bag (13) is set at the lower end between the backpack spray box (1) and the load-reducing silicone backboard (10), and the soft waist pillow bag (13) is adhesively connected to the load-reducing silicone backboard (10); the upper and lower ends of the end surface of the backpack spray box (1) are connected to a shoulder strap (6), and the two ends of the shoulder strap (6) are located between the load-reducing silicone backboard (10) and the backpack spray box (1).

6. The device for spraying exogenous hormones before corn anthesis according to claim 1, characterized in that: A manual air pump is provided at the exogenous hormone box (14), which can increase the pressure of the exogenous hormone box (14) to push the exogenous hormone to flow toward the exogenous hormone extraction tube (19).

7. A method for spraying exogenous hormones before corn anthesis based on the exogenous hormone spraying device before corn anthesis according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: Select a sunny and windless afternoon between 17:00 and 18:00 for spraying; Step 2: Open the liquid feeding cover (2) to add pure water and Tween-20 into the liquid storage chamber (16), open the exogenous hormone box feeding cover (15) to add highly concentrated liquid, paste or ointment exogenous hormone into the exogenous hormone storage chamber (17); The highly concentrated liquid, paste or ointment exogenous hormone is prepared by homogenizing and stirring a solid exogenous hormone and a small amount of liquid to improve fluidity and facilitate absorption by the exogenous hormone absorption tube (19); Step 3: The operator rotates the hand wheel (30), and the movable spraying clamp (34) is driven to slide by the lead screw (37), so that the spray head (36) is moved above the corn plant to be sprayed, so that the extended spraying rod (28) is at an angle of 45° to the horizontal; Step 4: Turn on the delivery pump (22), and absorb the pure water and Tween-20 in the liquid storage chamber (16) and the exogenous hormone in the exogenous hormone storage chamber (17) into the spiral mixing mechanism (23), mix them, and then enter the spray head (36) through the spray hose (9) for spraying; Step 5: The operator completes spraying of the corn plants in the two surrounding lines, and then rotates the hand wheel (30) to move the spray head (36) to the top of the corn plants in the two outer lines that need to be sprayed, and sprays until all the corn plants are sprayed; Step 6: If there is rainfall within 24 hours after spraying, re-spraying should be carried out; Step 7: Spray continuously for three days to complete all spraying work on the corn plants.

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