JP2003325041A - Preventive tool for foreign material mixing when harvesting tobacco leaf and method for cultivating tobacco - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a preventive tool for foreign material mixing, securely preventing a foreign material from mixing in when harvesting tobacco leaves as well as sustaining high temperature injury prevention and grass prevention effect and to provide a method for cultivating tobacco. <P>SOLUTION: This preventive tool has a plate coating member 10 coating the surface of a multi-sheet 110 around the root of the stem 102 of tobacco 100. The coating member 10 has a through part 12 to pass the tobacco stem 102 through and an insertion passage means 14 with one end communicating with the through part 12 and the other end connected with the periphery of the coating member 10 and attaching the coating member 10 to the through place of the through part 12 by insertion action from the outside. When the tobacco 100 grows to a certain extent, the coating member 10 is attached to the through place of the tobacco stem 102 by the insertion action from the outside. When harvesting, tobacco leaves 106 are harvested started from the leaves of the lower layer in a condition where the surface of a ridge around the root of the tobacco stem 102 is coated with the coating member 10. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter mixing prevention tool for tobacco leaf harvesting and a tobacco cultivation method.

[0002]

2. Description of the Related Art A conventional method for cultivating tobacco is to form ridges, and for example, a multi-sheet made of synthetic resin such as vinyl is stretched so as to cover the upper surface side of the ridges, and a tobacco seedling is provided along the longitudinal direction of the ridges. And plant them side by side at positions that are some distance from each other. When planting, the tobacco seedlings are planted by making holes in the ridges at the same positions while making holes in the multi-sheet. Then, when the tobacco grows to, for example, about 20 to 30 cm, soil around the root of the tobacco is applied so as to fill the hole, and soil is applied. Tobacco is ripened from the leaves of the lower layer to the leaves of the upper layer one after another in a state suitable for harvesting. For example, when tobacco grows to have a leaf length of 30 to 75 cm, the tobacco leaf on the lower side is handed. Are harvested one by one. And when all the tobacco leaves had been harvested, the mulch sheet was removed.

[0003]

However, when forming holes for planting seedlings in the multi-sheet, for example, a cut is made in the multi-sheet by a machine or the like, and the holes are formed by piercing the multi-sheet. Therefore, it is difficult to form a hole whose edge is cut off neatly, and the vinyl at the edge of the hole is divided into humps or strips. And, since the tobacco leaf located on the lower side is close to the ground, the vinyl debris left on the edge of the hole of the multi-sheet abuts the lower leaf of the tobacco, and when the tobacco leaf is harvested by hand, The debris was also torn off, and the vinyl fragments were sometimes mixed with the tobacco leaves that were harvested. Since vinyl etc. are very difficult to detect with a sensor etc., it is necessary to manually remove foreign substances such as vinyl, etc., which requires a lot of labor and it is difficult to completely remove even small fragments, There was a risk of shipping with foreign substances mixed in. In addition, since the soil is laid while covering the mulch sheet, the mulch sheet was torn during the mulching to expose the soil surface of the ridge, and weeds grew on the exposed portion. Then, the weeds were close to the lower tobacco leaves, and when the tobacco leaves were manually harvested, the leaves and stems of the weeds were also torn off, and there was a risk that the weed pieces would be mixed into the harvested tobacco leaves. . Weeds are also very difficult to detect with a sensor, and the same problems as foreign matter such as vinyl fragments described above occur, and weeding work is required, which requires a lot of labor. In addition, when removing the multi-sheet after harvesting all tobacco leaves, the entire multi-sheet was pulled out by lifting it above the height of the tobacco grown to about 100 cm, for example, along the tobacco stem, so it is lifted. At that time, the mulch sheet could catch on the stem of the tobacco and break, and the fragments could remain in the field. Since vinyl and the like are not decomposed naturally, there is a risk that the fields will remain in the field for a long period of time, deteriorating the environment of the fields, and that the remaining debris will be mixed in at the time of harvesting the tobacco to be grown next. Further, the work of lifting the multi-seat above the tip of the cigarette is complicated, requires a lot of labor, and is inefficient. further,
For example, when the sunlight is strong near the root of a cigarette during a period of strong sunlight such as summer, the soil temperature may be, for example, 50%.
The temperature rose to -60 ° C, and high temperature disorders such as root rot at high temperatures occurred. As a result, there have been problems such as the quality of tobacco leaves being deteriorated and the amount of harvest being decreased due to the tobacco itself dying.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to maintain the quality and yield of tobacco leaves while keeping the effects of high temperature damage and weed control. Foreign matter contamination at the time of harvesting tobacco leaves that is easily attached to the stems of the tobacco and reliably prevents foreign matter such as debris from multi-sheets and weed fragments when harvesting leaves on the lower layer side of tobacco leaves It is to provide a preventive tool and a method for cultivating tobacco.

[0005]

In order to solve the above-mentioned problems, according to the present invention, the multi-layered sheet 110 is stretched on the upper surface side, and the lower layer leaf (104) of the tobacco on the side of the ridge 112 that is close to the soil as it grows. ) Is a tool for preventing foreign matter from being mixed during the harvesting of the tobacco leaves 104, and a plate-like covering member 1 for covering the upper surface of the multi-sheet portion around the root of the tobacco stem 102.
0, and the covering member 10 has a penetrating portion 12 that penetrates the tobacco stem 102 in a penetrating manner, and one end side that communicates with the penetrating portion 12 and the other end side that is continuous with the outer edge of the covering member 10 and is inserted from the outside. And the insertion path means 14 to be mounted at the penetrating position of the penetrating portion 12, the covering member 10 is mounted at the penetrating position, and the upper surface of the ridge 112 around the root of the tobacco stem 102 is covered with the covering member 10. Tobacco leaf 1 from lower layer leaves in the state
It is composed of a foreign matter mixing prevention tool at the time of harvesting tobacco leaves, which is characterized in that the harvesting of No. 04 is performed.

Further, the insertion path means 14 may be composed of an insertion groove 32 which communicates the through portion 12 and the outer edge of the covering member 10.

Further, the insertion path means 14 is continuously cut from the penetrating portion 12 toward the outer edge of the covering member 10 and normally closes the cut surface in a close contact state to allow the cigarette in the penetrating state at the penetrating portion 12. The stalk 102 has a notch 22 for engaging the covering member 10, and when the covering member 10 is inserted, the notch is widened to allow the covering member 10 to be inserted and the penetrating portion 1
It is also possible to return to the close contact closed state of the cut surface when it is attached to the penetrating position of 2.

The penetrating portion 12 may be formed of a penetrating hole 20 through which the tobacco stem portion 102 is passed.

Further, the penetrating portion 12 includes a plurality of push-out notches 28 which are provided at the penetrating position of the tobacco stem portion 102 and which are radially provided with the penetrating position as a center, and the cut-out piece 30 is pushed up. The covering member 10 may be attached to the stem portion of the cigarette while forming the through hole.

The covering member 10 may be made of a self-decomposing sheet member.

Further, a warp preventing bent portion 18 for preventing the outer edge portion of the covering member 10 from warping toward the upper surface side may be formed.

Further, the covering member 10 has a plurality of penetrating portions 12 which are formed long in the longitudinal direction of the ridges and which can be simultaneously attached to a plurality of tobacco stem portions at a separated planting position of the cigarette, and insertion passage means 14 associated therewith. May be respectively provided.

Further, the present invention relates to a method for cultivating tobacco, wherein a multi-sheet is planted in a ridge stretched on the upper surface side and the stem portion of the tobacco which has grown to a certain extent is penetrated from the central position by an inserting operation from the outside. A covering member to be attached to the portion is prepared, and the covering member is attached to a position where the tobacco stem penetrates, and the multi-sheet 110 on the upper surface of the ridge around the root of the tobacco stem 102.
And a multi-sheet on the upper surface of the ridge around the root of the tobacco stem is covered with the covering member at the time of harvesting the tobacco leaves from the lower layer leaves above the tobacco layer 1
The method of cultivating tobacco comprises the step of harvesting 04.

After the tobacco leaves are harvested, the multi-sheet 110 is cut along with the covering member 10 in the longitudinal direction of the ridge, and the cut multi-sheet 1 is cut.
It is good also as including the process of removing 10 respectively.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first embodiment of a foreign matter mixing prevention tool for harvesting tobacco leaves according to the present invention. A foreign matter mixing prevention tool for harvesting tobacco leaves according to the present invention (hereinafter, referred to as “foreign matter mixing”). In this embodiment, the term "prevention tool" refers to a plate-shaped covering member that covers the multi-sheet portion of the upper surface of the ridges around the root of the tobacco stem, and a penetrating portion that is provided on the covering member and that penetrates the tobacco stem. And an insertion path means for connecting one end side to the penetrating portion and the other end side to the outer edge of the covering member so as to be attached to the penetrating position of the penetrating portion by an inserting operation from the outside. A covering member is attached to the ridge to cover the upper surface of the ridge around the root of the tobacco stem, and the tobacco leaves are harvested. Then, it is possible to prevent high temperature damage and prevent weeds from growing, and also to prevent foreign matter from being mixed in the tobacco leaves when the tobacco leaves are harvested.

In this embodiment, as shown in FIGS. 2 and 3, a tobacco 100 as a cultivated plant is planted in a ridge 112 in which soil is heaped up in a substantially semi-cylindrical shape and a multi-sheet 110 is stretched on its upper surface. To be The cigarettes are planted in a line along the longitudinal direction of the ridges while being separated by, for example, about 42 cm. In FIG. 2, the cigarette 100 is
For example, there is shown a cross-sectional view of a part near the base of a stem when it has grown about 30 cm. The multi-sheet 110 is made of, for example, vinyl, is stretched on the upper surface of one ridge 112, and is fixed by covering the hem side with soil. The multi-sheet 110 has holes formed corresponding to the planting positions of the tobacco 100, and the edges 114 of the holes are, for example,
It is formed like a hump. In the vicinity of the holes of the multi-sheet 110, for example, a breakage portion 116 formed at the time of soil gathering is formed, and the soil surface of the ridge is exposed. On the other hand, the tobacco 100 extends its stem 102 substantially vertically from the vicinity of the ridge of the ridge 112 through the hole of the multi-sheet 110, and the thickness of the stem near the root is, for example, 1 to It has been transplanted from the nursery at about 1.5 cm, and has grown to about 3 to 5 cm about one month after planting in the ridge. The tobacco leaf 104 on the lower layer side begins to grow close to the soil at the root of the stem 102, and gradually grows upward, and leaves are attached to the upper layer side to sequentially from the lower layer side to the upper layer side. Leaves mature to be suitable for picking.

In this embodiment, as shown in FIGS. 1 and 2, the foreign matter mixing prevention tool is a stem 102 of a cigarette 100.
Member 10 to be mounted near the base of the
It has a penetrating portion 12 provided through the penetrating portion for penetrating the tobacco stem, and an insertion passage means 14 for attaching the tobacco stem 112 to the penetrating portion 12 when the covering member 10 is inserted from the outside.

The covering member 10 in this embodiment is
As shown in FIG. 1, for example, it is made of a single cardboard paper board having a thickness of about 5 mm, and is formed in a substantially rectangular shape in a plan view. The covering member 10 is, for example, in addition to a cardboard paper board,
It is preferably formed from cardboard, a thin wooden plate, biodegradable plastic, or any other self-degradable sheet member. The covering member may be made of a relatively hard synthetic resin such as plastic. In FIG. 1, the covering member 10, at least when attached to a tobacco stem,
It has a size that can cover the multi-sheet portion around the root of the tobacco stem. For example, the horizontal length is about 40c.
It is provided in a rectangular shape having a length of m and a vertical length of about 30 cm. Preferably, the soil surface portion exposed from the breaking portion 116 of the multi-sheet is also covered.
Each of the four corners of the covering member 10 is linearly cut off at the corner.

In this embodiment, as shown in FIG. 2, the covering member 10 is bent downward at both left and right sides of its outer edge, and a bent portion 18 for preventing warpage is formed. As shown in FIG. 1, the bending portion 18 includes, for example, two parallel linear bending lines 16 provided at a position spaced inward by about 10 cm from the facing short side of the covering member.
The left and right outer ends are bent downward along the. The bent portion 18 is formed at an arbitrary position corresponding to the size of the ridge 112. The bent portion 18 is bent at an obtuse angle of about 150 degrees with respect to the straight central portion of the covering member in FIG.
When it is mounted on 02, the lower surface side of the covering member 10 is provided so as to substantially follow the upper surface of the ridge. The bent portion 18 is, for example,
It is possible to prevent the outer edge portion of the covering member from warping to the upper surface side when the covering member made of a cardboard paper sheet is once wetted with rain or the like and then dried, and to maintain the covering state of the ridge upper surface of the covering member.

The penetrating portion 12 is a penetrating portion for penetrating the tobacco stem and mounting the covering member at the penetrating position of the tobacco stem. In this embodiment, as shown in FIGS. 1 and 2, the penetrating portion 12 is formed by one circular through hole 20 that vertically penetrates the substantially central portion of the covering member 10. The through hole 20 is provided at least large enough to allow the stem 102 to pass therethrough so as not to hinder the growth of the tobacco stem 102, and large enough to allow the covering member 10 to cover the edge 114 of the hole of the multi-sheet 110. For example, the diameter of the through hole is about 5 cm. The covering member 10 is attached to the tobacco stem by penetrating the tobacco stem with the through hole 20 as the penetration position of the tobacco stem. The through hole 2
The shape of 0 is not limited to a circular shape, but a triangle, a quadrangle,
It may have a larger polygon or any other shape.

The insertion passage means 14 is an insertion passage means for attaching a tobacco stem to the penetration position of the penetration portion by an insertion operation from the outside. In this embodiment, the insertion path means 14
As shown in FIG. 1, is formed by a notch 22 formed by linearly cutting the covering member 10. The notch 22 is formed from the through hole 20 to the covering member 1 in FIG.
It is cut in a straight line toward the outer edge of 0. The cut 22 is continuously cut toward the outer edge of the covering member while communicating with the through hole 20 with a sharp blade or the like, and the cut surfaces thereof are in close contact with each other. The notch 22 is formed by cutting both sides of the notch 22 of the covering member 10 with the notch leg 24.
As a and 24b, the upper half is bifurcated into left and right parts. When the covering member 10 is attached to the tobacco stem, the cutting legs 24a and 24b are curved by applying a force in opposite directions so as to separate the cutting legs 24a and 24b from each other in the vertical direction with respect to the covering member to widen the cut and separate the cut surface. Then, a gap to be an insertion path is formed. The covering member 10 is inserted into the tobacco stem through the gap, and the tobacco stem is placed in the through hole 20. Then, when the stem 102 is placed in the through hole 20, the cut leg portions 24a and 24b are returned, and the cut surface is returned to the close contact state and mounted. Therefore, in the covering member 10, the tobacco stem 102 is always provided with the through hole 2
The state of being attached to the stem is maintained in a state of penetrating 0. The cut 20 is not limited to a linear shape, but may be a saw blade shape, a wave shape, or any other shape. The insertion path means 14 is not limited to the notch 22, and may be, for example, an insertion groove that connects the penetrating portion and the outer edge of the covering member. The groove width of the insertion groove is preferably narrower than the stem diameter in order to prevent detachment at the time of mounting, but may be wider than the stem diameter. Also,
The shape of the insertion groove may be linear, corrugated or any other shape. Further, as shown in FIG. 1, the notch 22 has a substantially V-shaped notch on the outer edge side of the covering member, and an insertion opening 26 is provided to facilitate insertion of a tobacco stem into the insertion path means. There is.

As shown in FIG. 2, for example, the foreign matter contamination preventive tool is applied to the stem of a cigarette when the height of the cigarette is about 30 cm and the thickness of the stem is about 3 to 5 cm after the soil is gathered. It is installed. As described above, at the time of attachment, the notch that is the insertion path means is widened and the covering member is inserted from the outside in the direction along the longitudinal direction of the ridge, and the tobacco stem is placed in the through hole. The cut surface is tightly closed and attached, and the multi-sheet portion on the upper surface of the ridge around the root of the tobacco stem is covered. At this time, it is preferable that the edge of the hole of the multi-sheet does not protrude from the through hole to the upper surface side and is positioned below the covering member. Then, as shown in FIG. 3, when the cigarette grows to a height of about 100 cm, it is manually harvested from the lower layer leaves while wearing the foreign matter mixture prevention tool. With this, since the edge of the hole of the multi-sheet is covered with the covering member, when the lower layer leaves are harvested, the edge of the hole of the multi-sheet is not torn along with the leaf, and the tobacco leaf harvested is free of foreign substances such as vinyl debris. Can be surely prevented from being mixed. Further, the covering member also covers the soil surface exposed from the broken portion of the multi-sheet, so that weeds are prevented from growing. Also, since the covering member covers the area around the root of the stem, sunlight does not hit the ridges around the root of the stem, preventing high temperature damage,
Prevents wilting. And the quality of the tobacco leaf can be maintained and the yield can be maintained.

FIG. 4 shows the structure of another embodiment of the covering member 10. The same members as those in the above embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In FIG. 4, the covering member 10 has a substantially rectangular shape that is horizontally long in a plan view, and four corners are formed substantially at right angles. In FIG. 4, the covering member 10 does not have the bent portion 18 and is attached to the tobacco stalk in a state of being substantially linear in cross section to cover the upper surface side of the multi-seat. Further, the insertion path means 14 is formed of an insertion groove 32 that connects the through hole 22 and the outer edge of the covering member. In FIG. 4, the insertion groove 32 is linearly formed with a width narrower than at least the diameter of the through hole 20. This prevents the tobacco stem from coming off the through-hole when the covering member is attached.
The groove width may be wider than the stem diameter.

FIG. 5 shows various configurations of the covering member 10. As shown in FIG. 5A, it may be formed in a circular shape in plan view, or may be an ellipse or an ellipse. Further, the insertion opening 26 provided on the outside of the covering member 10 of the notch 22 may have, for example, a semicircular shape or any other shape. Further, as shown in FIGS. 5B and 5C, the covering member 10 may be formed in a triangular shape or a pentagonal shape, or may be a polygonal shape having a larger size. Also,
Each corner may be chamfered. Also, FIG.
As shown in (d), the covering member 10 may be formed in a substantially cross shape, or may be formed in any other shape. Alternatively, the left and right ends of the covering member may be bent in accordance with the shape of the ridges to provide the warp preventing bent portions. Further, the insertion path means is not limited to the notch 22 and may be an insertion groove 32.

Further, FIG. 6 shows another embodiment of the penetrating portion 12. As shown in FIG. 6A, the covering member 10 is made of a cardboard paper board as in the above embodiment,
It is formed in a substantially rectangular shape in a plan view. One penetrating portion 12 is provided at the substantially center of the covering member 10. Penetration 1
2 has a notch 28 for pushing up that is radially cut in a substantially US-shaped pattern from its center toward the outside, and eight triangular notch pieces 30 formed by the notch 28 are formed. have. Notch for pushing up 2
The reference numeral 8 linearly communicates the cut with the cut 22 which is the insertion path means. The bottom side of the cut piece 30 is integrated with the inner edge side of the covering member 10, and the bottom side is bent to push up the cut piece to form a through hole. Since the cut piece 30 is formed of a cardboard paper board as a covering member, when the hand is released from the upright state, the cut piece 30 strongly returns to fall on its apex side as the center.
As shown in FIG. 6B, when the covering member is attached to the stem of the cigarette, the cut piece 30 is bent from the bottom side thereof and pushed upward to form a through hole capable of penetrating the stem 102. As a penetration position, the tobacco stem is penetrated and the cutting piece 30 is attached so as to be substantially in close contact with the stem by the restoring force of the cutting piece 30. This prevents the covering member from moving due to wind or the like and damaging the stems or leaves when attached, for example. The number of cut pieces formed by radial cuts may be arbitrary. Although the covering member is a cardboard paper board in this embodiment, the covering member is not limited to this, and for example, a material having a certain degree of flexibility and self-restoring force, such as a plastic plate, is simply cut into the covering member. Only by pushing the cut piece up, the tobacco stalk can be pierced, and the cut piece can be attached to the tobacco stalk in a state of being attached.

Further, one covering member 10 may be provided with a plurality of penetrating portions and insertion path means as described above. For example, as shown in FIG. 7, the covering member 10 is provided laterally long along the longitudinal direction of the ridge. In FIG. 7, the covering member 10 has three penetrating portions, and insertion path means linked to each penetrating portion is provided. The penetrating portion is formed from the penetrating hole 20, and is linearly arranged at a position separated corresponding to the interval of the fixed tobacco. Further, the insertion path means is formed by a linear cut 22 that is cut in the vertical direction from each through hole 20 toward the outer edge upper side of the covering member. It can be attached to multiple stems of tobacco planted in the ridge at the same time.
The number of penetrating portions and insertion path means is not limited to three, and any number of two or three or more may be provided. In addition, a bent portion for warpage prevention may be provided.

Next, an embodiment of a method for cultivating tobacco will be described with reference to FIGS. 8 and 9. FIG. 8 shows a schematic flowchart of a tobacco cultivation method. In this embodiment, for the method of cultivating tobacco, for example, the covering member 10 shown in FIG. 1 is prepared. For example, sowing in a house or the like, and after about 3 to 4 weeks, the seeds are divided and temporarily planted in a nursery in the house. Tobacco 100 is, for example, 10 to 15
When grown to a height of about cm, as shown in FIG. 9A, the multi-sheet 110 is planted in the ridge 112 stretched on the upper surface. Then, as shown in FIG. 9B, the cigarette
For example, when the soil grows to a height of about 20 to 30 cm, soil is collected. After that, as shown in FIG. 9C and FIG.
For example, when the height of cigarette reaches about 30 cm,
The covering member is inserted laterally into the tobacco stem through the insertion path means to attach the covering member 10 to the position where the covering member 10 penetrates the tobacco stem 102, and the covering member is placed in the multi-sheet around the root of the tobacco stem. Is placed on the upper surface side of the so as to cover the upper surface of the ridge. At that time, the edge 114 of the hole of the multi-sheet is arranged below the covering member so as not to project to the upper surface side through the penetrating portion. Then, as shown in FIG. 9D, the cigarette 100 grows with the covering member attached, and
When the tobacco leaves 104 grow to about 100 cm, the tobacco leaves 104 are sequentially harvested by hand as the tobacco leaves 104 age from the lower layer leaves toward the upper layer side so as to be suitable for harvesting. As a result, the multi-sheet around the root of the stem is covered during the growing period of tobacco and during the harvesting period of tobacco leaves, so that the multi-sheet on the upper surface of the ridge around the root of the stem is covered to prevent high temperature damage and maintain weed control effects. It is possible to prevent foreign matter from being mixed during harvest of shitsuka tobacco leaves.

After about 3 months have passed from the start of harvesting the lower tobacco leaves, after harvesting all the upper tobacco leaves, the step of cutting and removing the multi-sheet 110 is performed. As shown in FIG. 10, in a state where the covering member 10 is attached to a tobacco stem, for example, a tractor or the like having a disk-shaped cutter 120 on the rear side is placed between the tire 122 and the ridge so as to straddle the ridge 112. While arranging, the cutter 120 is arranged at the center of each ridge. The number of ridges that can be straddled may be one or two or more. Then, while the tractor or the like is running to the left side in FIG.
Thus, the covering member 10 is cut along with the multi-sheet 110 substantially linearly, that is, at the positions of the through-hole 20 of the covering member 10 and the holes of the multi-sheet, and both are cut.
After cutting off, the multi-sheet 11 cut off from the center
Only 0, for example, can be removed from the ridges by simply pulling each laterally. As a result, the removal of the multi-seat can be performed easily and reliably, the fragments of the multi-seat do not remain in the field, and the labor of the removal work is reduced. Further, the covering member is detached from the stem by being cut off. If the covering member is formed of, for example, a self-decomposing sheet member such as a cardboard plate, it will be decomposed naturally even if it is left in the field as it is.

The foreign matter contamination preventive tool and tobacco cultivation method of the present invention at the time of harvesting tobacco leaves are not limited to the above-described embodiments, but are arbitrarily modified without departing from the essence of the invention described in the claims. May be added. For example, the shape, size, thickness, etc. of the covering member are arbitrarily set. Further, the covering member may be attached to the stem of the cigarette by combining a plurality of sheet members. The penetrating portion may have, for example, a U-shaped notch, and the covering member may be attached to the stem portion of the tobacco in a state in which the notch piece is pushed up to form the through hole, and as other arbitrary configurations. Is also good.

[0030]

As described above, according to the foreign matter mixing prevention device for harvesting tobacco leaves of the present invention, the multi-sheet is stretched on the upper surface side, and the lower side of the tobacco on the side close to the ridge soil as it grows. A foreign matter contamination preventing tool at the time of harvesting tobacco leaves that are sequentially harvested from layered leaves, having a plate-shaped covering member that covers the upper surface of the multi-sheet portion around the root of the tobacco stem, and the covering member is
A penetrating portion that penetrates the tobacco stem in a penetrating manner, and an insertion path means that one end side is connected to the penetrating portion and the other end side is continuously attached to the outer edge of the covering member to be attached to the penetrating position of the penetrating portion by an inserting operation from the outside, And a covering member is attached to the penetrating position, and a tobacco leaf is harvested from the lower layer leaves in a state where the upper surface of the ridge around the root of the tobacco stem is covered with the covering member. Since it covers the multi-sheet part on the upper surface of the ridges around the root of the stem, it does not tear the edges of the multi-sheet together with the tobacco leaf when harvesting the tobacco leaf,
Reliably prevent foreign matter such as multi-sheet debris from mixing in the harvested tobacco leaves, and at the same time, prevent the weeds from growing by covering the tear points of the multi-sheet.
It blocks the sunlight hitting the ridges around the root of the tobacco stem, preventing high temperature damage and death. And the quality of the tobacco leaf is maintained and the yield is maintained. Further, since the foreign matter mixing prevention device has a simple structure, the manufacturing cost is low, and the above effects such as easy attachment to the tobacco stem through the insertion path means can be obtained at the same time.

Further, since the insertion path means is constituted by an insertion groove that allows the penetration portion and the outer edge of the covering member to communicate with each other, the tobacco stem can be easily arranged at the penetration position of the penetration portion through the insertion groove. As described above, the covering member can be inserted and mounted, and the covering member can be mounted with a small labor.

Further, the insertion path means is continuously cut from the penetrating portion toward the outer edge of the covering member and normally closes the cut surface closely to cover the stem portion of the tobacco in a penetrating state at the penetrating portion. By a notch for engaging the member, by widening the notch at the time of inserting the covering member and inserting the covering member, and by adopting a configuration in which when the covering member is attached to the penetrating position of the penetrating portion, the cut face is brought into a close contact closed state. With a simple structure, the covering member can be easily attached to the tobacco stem, and after the attachment, the cut surface is returned to the close contact closed state to maintain the attachment state of the covering member to the tobacco stem and the covering member causes the tobacco stem. Can be reliably prevented from coming off.

Further, since the penetrating portion is formed of a through hole that allows the tobacco stem portion to pass therethrough, the tobacco stem can penetrate the covering member with a simple structure without hindering its growth. As a result, the state in which the covering member is attached to the tobacco stem is maintained.

Further, the penetrating portion includes a plurality of push-in notches which are provided at the penetrating position of the tobacco stem portion and are radially provided with the penetrating position as a center, and the through-hole is formed in a state where the cut piece is pushed up. The covering member is attached to the stalk portion of the cigarette while being allowed to move, so that the notched pieces that are pushed up are engaged with the stalk portion of the cigarette, and the covering member moves with respect to the stalk portion of the cigarette by, for example, wind. Since it is possible to prevent the above, maintain the covering state of the ridge upper surface of the covering member and prevent the covering member from damaging the stems and leaves of the tobacco, it is possible to maintain the quality and yield of the tobacco leaf.

Further, the covering member is made of a self-decomposable sheet member, so that after the tobacco leaves are harvested,
Even if it is left in the field, it will be naturally decomposed by being exposed to wind and rain, so that the environment of the field will not be deteriorated, and the work of removing the covering member is not required, and the labor is reduced. Further, for example, when the covering member is formed of a cardboard plate or the like, it is lightweight and has good portability, and at the same time, material cost can be reduced.

Further, by forming the warp preventing bent portion for preventing the warp of the outer edge portion of the covering member toward the upper surface side, the covering member made of, for example, a cardboard plate or the like has a simple structure. When it dries after being wet, it can be prevented from warping to the upper surface side of the outer edge of the covering member, and the covering member maintains a good state of covering the multi-sheet on the ridge surface around the root of the tobacco stem. it can.

Further, the covering member has a plurality of penetrating portions which can be simultaneously attached to a plurality of tobacco stalks at a distance from the tobacco planting position and insertion path means associated therewith, which are formed long in the longitudinal direction of the ridges of the tobacco leaves. By adopting the respective constitutions, it is possible to attach to a plurality of cigarettes with only one covering member, and it is possible to satisfactorily cover the upper surface of a wide ridge.

Further, in the method of cultivating tobacco, a multi-sheet is planted in a ridge stretched on the upper surface side and the stem portion of the tobacco grown to some extent is attached to the penetrating portion at the central position by an inserting operation from the outside. Prepare a covering member, attach the covering member to the position where the tobacco stem penetrates, and cover the multi-sheet on the ridge upper surface around the root of the tobacco stem with the covering member, and at the time of harvest, around the root of the tobacco stem. The step of harvesting tobacco leaves from the lower layer leaves above the mulched sheet of the ridge upper surface of the ridge is covered with a covering member. As it covers the sheet part, it does not tear the edges of the holes of the multi-sheet together with the tobacco leaf when harvesting tobacco leaves, ensuring that foreign matter such as multi-sheet debris is mixed in the harvested tobacco leaves. Preventing, at the same time, to cover the break point of the multi-sheet or the like to prevent the weeds that grow,
In addition, it blocks sunlight that hits the ridges around the roots of tobacco stems, thus preventing high temperature damage and death. Then, the effects of maintaining the quality of the tobacco leaf and maintaining the harvest amount can be obtained at the same time.

In addition, after the tobacco leaves are harvested, the process includes cutting the multi-sheet in the longitudinal direction of the ridge with the covering member and removing the cut multi-sheets, respectively. , The cut multi-sheet without interfering with the tobacco stem, for example,
By simply pulling each of the multi-sheets in the lateral direction, the multi-sheets can be reliably removed without leaving debris and the like, and can be easily removed, thus reducing labor.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a foreign matter mixing prevention tool at the time of harvesting tobacco leaves according to the present invention.

FIG. 2 is an enlarged cross-sectional view when FIG. 1 is attached to a predetermined position of a tobacco stem.

FIG. 3 is a perspective view when a tobacco stem grows in the mounted state of FIG.

FIG. 4 is an explanatory diagram of another embodiment of a foreign matter mixture prevention tool.

FIG. 5 is a plan view showing examples of various shapes of a covering member.

FIG. 6A is a plan view of another embodiment of a penetrating portion, and FIG. 6B is a side view thereof.

FIG. 7 is a plain view of an embodiment in which a plurality of penetrating parts and insertion path means are provided in one covering member.

FIG. 8 is a schematic flowchart of an embodiment of a method for cultivating a cigarette of the present invention.

FIG. 9 is an explanatory diagram of a method for cultivating tobacco.

FIG. 10 is a mounting plan view of the covering member in which the cigarette is omitted.

[Explanation of symbols]

10 Cover member 12 Penetration part 14 Insertion path means 18 Bend 20 through holes 22 notches 28 notches 30 cut pieces 32 insertion groove 102 tobacco stem 104 tobacco leaves 110 multi-seat 112 ridges

Claims (10)

[Claims] 1. A device for preventing foreign matter from being mixed at the time of harvesting tobacco leaves, in which a multi-sheet is stretched on the upper surface side and the lower layer leaves of the tobacco on the side closer to the ridge soil are sequentially harvested as the leaves grow. It has a plate-shaped covering member that covers the upper surface of the multi-sheet portion around the root of the tobacco stem, and the covering member has a penetrating portion that penetrates the tobacco stem in a penetrating manner and one end side that communicates with the penetrating portion and the other end side Insertion path means that is continuously attached to the outer edge of the covering member and is attached to the penetrating position of the penetrating portion by an inserting operation from the outside, and the covering member is attached to the penetrating position, and the ridge upper surface around the root of the tobacco stem A foreign matter mixing prevention tool at the time of harvesting a tobacco leaf, characterized in that the tobacco leaf is harvested from the lower layer leaves while being covered with the covering member. 2. The foreign matter mixing prevention tool at the time of harvesting tobacco leaves according to claim 1, wherein the insertion path means comprises an insertion groove that connects the through portion and the outer edge of the covering member. 3. The insertion path means is continuously cut from the penetrating portion toward the outer edge of the covering member to normally close the cut surface in a close contact state to cover the tobacco stem portion in the penetrating state at the penetrating portion. The cigarette according to claim 1, comprising a notch for engaging the member, wherein the notch is widened when the covering member is inserted to allow the covering member to be inserted, and when the covering member is mounted at the penetrating position of the penetrating portion, the cut face is brought into a close contact closed state. A tool to prevent foreign matter from entering during leaf harvesting. 4. The foreign matter mixing prevention tool at the time of harvesting tobacco leaves according to claim 1, wherein the penetrating portion is a through hole through which the stem portion of the tobacco passes. 5. The penetrating portion includes a plurality of push-in notches provided at a penetrating position of a tobacco stem portion and radially provided with the penetrating position as a center, and the through-hole is formed in a push-up state of the cut piece. The foreign matter mixing prevention tool at the time of harvesting tobacco leaves according to any one of claims 1 to 3, wherein the covering member is attached to the stem portion of the tobacco while being allowed to do so. 6. The foreign matter contamination preventive device for harvesting tobacco leaves according to claim 1, wherein the covering member is a self-decomposable sheet member. 7. A warp preventing bent portion for preventing a warp of an outer edge portion of the covering member toward the upper surface side is formed.
1. A device for preventing contamination of foreign matter at the time of harvesting tobacco leaves according to any one of 1. 8. The covering member has a plurality of penetrating portions which are formed to be long in the longitudinal direction of the ridges and which can be simultaneously attached to a plurality of tobacco stem portions at a separated planting position of the cigarette, and insertion passage means associated therewith. A foreign matter mixing prevention tool at the time of harvesting tobacco leaves according to any one of claims 1 to 7. 9. A method for cultivating tobacco, wherein a multi-sheet is planted in a ridge stretched on the upper surface side and the stem portion of the tobacco that has grown to a certain extent is attached to the penetrating portion at the central position by an inserting operation from the outside. Prepare a covering member, attach the covering member to the penetration position of the tobacco stem, and cover the multi-sheet on the ridge upper surface around the root of the tobacco stem with the covering member, and at the time of harvest, around the root of the tobacco stem. The method of cultivating tobacco, comprising the step of harvesting tobacco leaves from the lower layer leaves above the mulched sheet on the upper surface of the ridge with the covering member covered. 10. The method according to claim 9, further comprising the steps of, after harvesting the tobacco leaves, cutting the multi-sheet in the longitudinal direction of the ridge together with the covering member, and removing the cut multi-sheets. How to grow tobacco.