JP2006042630A - Method for laying rice seed sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for digging a drainage ditch for draining water left in a hollow part of a paddy field if any after the drainage of a paddy field, when laying a rice seed sheet on the field in a new rice culture technology described in Japan Patent Publication number 2003-274769. <P>SOLUTION: A rice seed sheet 1 is laid on a paddy field by mounting a rice seed sheet roll 2 composed of a rice seed sheet 1 wound in the form of a roll to the rear end of a rice transplanter 11 traveling on the paddy field, traveling the transplanter 11 forward and unwinding the rice seed sheet roll 2. The rice seed sheet 1 has a plurality of rice seed rows holding rice seeds 8 in the longitudinal direction of the sheet 1 in a row and rice seed absent rows 10 between the rice seed rows 9, 9. When laying the rice seed sheet 1 on a paddy field, a drainage ditch is formed parallel to the rice seed absent row 10 by a digging blade 12 of the rice transplanter 11 on the paddy field at a position contacting with at least one rice seed absent raw 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method of laying a submerged floating fiber structure proposed in Patent Document 1 in a paddy field, and particularly to a method of laying a seed pod sheet in which a seed pod is sown in a submerged floating fiber structure in a paddy field. It is.

  In the patent document 1, the present applicant has proposed a novel rice cultivation technique that is completely different from the conventional rice cultivation technique. The rice cultivation technique described in Patent Document 1 is as follows. First, an underwater floating fiber structure is laid in a paddy field. As the underwater floating fiber structure, a cotton non-woven fabric is generally used, and this may be a seed vat sheet in which seed vats are sown in the underwater floating fiber structure. In this case, since the seed pod sheet in which the seed pod is sown in the underwater floating fiber structure is used, the seed pod sheet is laid in the paddy field after the water is dropped. After laying a seed seed sheet on the paddy field, irrigate the paddy field, store water between the paddy field and the seed seed sheet, and float the seed seed sheet in the water. A few days later, weeds grow on the paddy field, and the main leaves are generated from the sheath leaves of monocotyledonous plants in the weeds. On the other hand, seeds emerge from the seed seeds in the seed seed sheet, and leaves appear. When this state is reached (especially when the third leaf appears from the seed pod), the water stored in the paddy field is dropped. Then, the true leaves of the weeds are overwhelmed by the seed pod sheet and are covered with the seed pod sheet, so that photosynthesis cannot be performed and the weeds die. On the other hand, the roots of the seed buds that emerged were the ones that had been growing in the water when the seed pod sheet was floating in the water. Grows with nutrients from inside. Since the rice cultivation technique described in Patent Document 1 is as described above, herbicides such as agricultural chemicals are unnecessary, have no adverse effect on the environment, and are labor-saving.

  However, in the case of this rice cultivation technique, if there is a depression on the paddy field, the following phenomenon may occur, preventing good growth of the rice. That is, if there is a dent on the rice field, water remains in the pit even after the water has dropped. When the seed pods in the seed pod sheet are located on the depression, the seed pod roots cannot contact the paddy soil, and the seed potato roots are difficult to extend into the ground. If the roots of the seed pods do not extend into the ground, the rice will not grow, and even if the seeds grow into the ground through the water in the pit, some of the roots are on the ground (to the water in the pit) (The extended roots will come to the ground when the water in the pits is dried), which makes it easier to fall over when growing rice.

  In order to solve such a drawback, it is necessary to make the surface as flat as possible before laying the seed sheet. If the rice field is in a completely flat state, the above-mentioned drawbacks will not occur, but it is difficult to make the rice field completely flat, and indentations will occur during the laying of the seedling sheet. There was also.

JP 2003-274769 A

  An object of the present invention is to provide a method for laying a seed vat sheet so that water does not remain in the pit after the water has dropped, even if the pit has a dent.

  In order to solve the above-mentioned problems, the present inventors set the seed sowing state of the seed seed in the seed seed sheet when laying the seed seed sheet using the rice transplanter, and correspond to the place where the seed seed does not exist. A configuration is adopted in which a drainage groove is provided. There may be a dent in the seed potato sheet where the seed potato does not exist, and water may remain in this dent. Therefore, a drainage groove is provided at a place where the seed potato sheet of the seed potato sheet does not exist, and the water remaining in the depression other than the drainage groove is drained from the drainage groove. Therefore, water does not remain in the pits other than the drainage ditch, and even if the seed pods on the seed pods are located on the pits, the seed pods can easily come into contact with the soil of the paddy fields due to their own weight. It becomes easier to set roots.

  In order to solve the above problems, the configuration of the present invention is as follows. That is, by attaching a seed pod sheet roll in which a seed potato sheet is wound in a roll shape to the rear end of the rice transplanter that travels in a paddy field, the rice seedling sheet roll is rewound, In the method of laying a seed potato sheet on a paddy field, the seed potato sheet is an underwater floating fiber structure, and a plurality of seed potato rows in which seed potatoes are seeded in rows in the longitudinal direction of the seed potato sheet, and the seed potato When there is a seedless absence row that forms between the rows, and when the seedling sheet is laid in the paddy field, the drilling blade provided in the rice transplanter is positioned at the position of the paddy field where at least one row of seedless absence row is in contact The soot seed sheet laying method is characterized in that a drain groove is dug parallel to the soot seed absent line.

  The seed vat sheet | seat 1 which concerns on this invention is laid using the rice transplanter 11 generally used. The seed soot sheet 1 has a shape of a seed soot sheet roll 2 wound in a roll shape. And the soy seed roll 2 is attached to the rear end of the known rice transplanter 11. This attachment method is arbitrary, but in short, it is only necessary that the rice seedling sheet roll 2 is rewound by running the rice transplanter 11 forward and the seed rice sheet 1 can be laid on the paddy field. Specifically, the mounting method as shown in FIG. 1 is preferable. That is, a method of connecting to the seedling mount 14 provided in the known rice transplanter 11 via the arms 4a and 4b is preferable. The arms 4 a and 4 b are attached to the left and right ends of the seedling platform 14 of the rice transplanter 11. At the rear end of the arm 4a, there is provided a receiving base 6 into which the mandrel 5 of the seed roll sheet roll 2 is fitted, and the mandrel 5 is fitted therein. The rear end of the arm 4b is attached to the arm 4a and supports the arm 4a. Since the seedling platform 14 is generally movable up and down, the seed vat sheet roll 2 is also moved up and down via the arms 4a and 4b in response to the lifting and lowering. When the seed seed sheet 1 is laid on the paddy field, the seedling stage 14 is lowered so that the seed seed sheet roll 2 is in contact with the paddy surface as much as possible. On the other hand, when cutting the seed vat sheet 1 or changing the direction of the rice transplanter 11, the seed vat sheet roll 2 is raised to facilitate cutting or to change the direction.

  The mounting method shown in FIG. 2 is most preferable. That is, there is a method in which a known seed transplanter 11 is connected to a seedling platform 14 via an arm 4a, and this arm 4a is brought into contact with a support bar 4c fixed to the seedling platform 14 by means such as welding. preferable. The arm 4 a and the support bar 4 c are attached to the left and right ends of the seedling platform 14 of the rice transplanter 11. At the rear end of the arm 4a, there is provided a receiving base 6 into which the mandrel 5 of the seed roll sheet roll 2 is fitted, and the mandrel 5 is fitted therein. Since the seedling stage 14 is generally movable up and down, the seed vat sheet roll 2 also moves up and down via the arm 4a. When the seed seed sheet 1 is laid on the paddy field, the seedling stage 14 is lowered so that the seed seed sheet roll 2 is in contact with the paddy surface as much as possible. The seed soot sheet roll 2 is connected to an arm 4a, and this arm 4a is merely abutted against the support bar 4c, and therefore, the joint 4d between the seedling table 14 and the arm 4a is mainly shown in FIG. Move freely counterclockwise. Therefore, even if the soot seed roll 2 moves up and down at the time of laying, the arm 4a can follow the movement, and an excessive tensile force or the like can be prevented from acting on the soot seed sheet 1. For this reason, it is possible to prevent the seed soot sheet 1 from being broken or damaged when the seed soot sheet 1 is laid while the rice transplanter 11 is running. In addition, when cutting the seed vat sheet 1 or changing the direction of the rice transplanter 11, raising the seed vat sheet roll 2 to facilitate cutting or changing the direction is the same as in the case of FIG. is there.

  As described in Patent Document 1, the seed vat sheet 1 is composed of an underwater floating fiber structure 7. Specifically, it is a non-woven fabric made of cotton fibers, and this is an underwater floating fiber structure, as described in Patent Document 1, oils and fats such as cotton wax are attached to the surface of the cotton fibers. Because it is water repellent. In the present invention, seed pod 8 is sown in this underwater floating fiber structure 7 to form seed pod sheet 1. What is characteristic in the present invention is the sowing state of the seed pod 8. That is, a plurality of seed potato rows 9, 9... Formed by seeding seed potatoes 8 in a row in the longitudinal direction of the seed potato sheet 1, and a seed potato absent row formed between the seed potato rows 9, 9. There are 10, 10,. In general, the optimum width of the row 10 without seeds is about 25 cm. The seed pod 8 is preferably sown inside the underwater floating fiber structure 7. Specifically, seed pod 8 is sown on one sheet of water-floating fiber structure layer, and another sheet of water-floating fiber structure layer is further laminated thereon to form two sheets of water-floating fiber. It is preferable to use the seed vat sheet 1 having a structure in which the seed vat 8 is sandwiched between the structure layers.

  And when this soot sheet | seat 1 is laid on a paddy field, a drain ditch is dug by the excavation blade 12 provided in the rice transplanter 11. FIG. What is important in the present invention is that the position of the drainage groove formed in the pit coincides with the position where the seed-fed absence row 10 contacts the rice field. If this does not match, and the drainage trench is dug in a position where the seed culm row 9 is in contact with the rice field, the root of the seed culm 8 is difficult to extend into the soil at the time of falling water, which is not preferable. The location where the excavating blade 12 is provided may be any location on the rice transplanter 11 as long as it corresponds to the seed-fed absence row 10. That is, the excavation blade 12 is provided at the place of the rice transplanter 11 corresponding to the position of the seedless absence row 10 in FIG. The excavating blade 12 is preferably provided on the bottom surface (grounding surface) of the float 13 attached to the rice transplanter 11.

  The float 13 provided in the rice transplanter 11 has an action of preventing the settlement of the rice transplanter body and leveling the unevenness of the paddy surface. Therefore, if the excavating blade 12 is provided in the float 13, there is an advantage that a drainage groove having a certain depth can be excavated. In addition, since the drainage trench is excavated at a certain depth, there is an advantage that there is little load fluctuation accompanying the excavation action and the traveling performance of the rice transplanter 11 is not adversely affected. In order to provide the excavating blade 12 on the float 13, for example, a metal flat plate may be processed into a wedge shape and attached to the float 13 such that the wedge-shaped tip is grounded. Then, if the rice transplanter 11 is run, the soot seed sheet 1 is laid, and a drain groove is dug in a position where the seed soot-free row 10 of the soot seed sheet 1 is in contact with the rice field, and this drain groove does not exist. It is dug in parallel with the row 10.

  In the present invention, it is preferable to install a watering device on the rice transplanter 11. This is for spraying water on the seed vat sheet 1 immediately after laying the seed vat sheet 1 on the paddy field. The reason why water is sprayed on the seed vat sheet 1 is to increase the weight of the seed vat sheet 1 or to bring the seed vat sheet 1 and the rice field into close contact with each other so that the seed vat sheet 1 does not rise due to wind. The location where the water is sprayed is arbitrary, but, for example, a method of spreading the seed vat sheet 1 in a generally zigzag manner over the width of the seed vat sheet 1, or an accurate spread in a zigzag manner on the overlapping portion of the adjacent vat sheet 1, 1 There is a way. In the case of adopting a method of spreading in a generally zigzag shape, for example, the spreading device shown in FIG. 4 may be used. That is, the water hose 15, a bar 16 for swinging the water hose 15, and a watering nozzle 17 attached to the tip of the water hose 15 are provided, and a ring 18 a is passed through the bar 16. The water supply hose 15 is attached to the ring 18b, and the rings 18a and 18b are preferably connected movably. The reason for using the two rings 18a and 18b is that the vibration amplitude cannot be increased with the single ring 18a. Further, it is preferable to stabilize the amplitude cycle by adding a heavy object 20 to the ring 18b or using a heavy ring itself. The bar 16 is provided with stoppers 19 and 19 so that the ring 18a swings within a predetermined range. Such a watering device is vibrated by traveling of the rice transplanter 11, and the ring 18 a swings between the stoppers 19 and 19 along the bar 16. Since the ring 18b is movably connected to the ring 18a, the ring 18b moves substantially in a zigzag manner by both the swinging of the ring 18a and the movement of the ring 18b. Since the water supply hose 15 and the water spray nozzle 17 are attached to the ring 18b that performs such a zigzag motion, the water spray nozzle 17 performs a general zigzag motion, and water is sprayed on the seed vat sheet 1 in a substantially zigzag shape. It becomes.

  In addition, the bar 16 itself may be swung from side to side in order to accurately spray the adjacent seed vat sheets 1, 1 in a zigzag shape. Specifically, as shown in FIG. 5, the water supply hose 15 and the watering nozzle 17 are fixed to the bar 16 with a string or the like. Then, one end of the connecting rod 21 is fixed to one end of the bar 16 with a spherical pivot or the like. Further, the other end of the connecting rod 21 is fixed around the rotating body 22. When the rotator 22 is rotated, the bar 16 swings left and right with a constant amplitude. If this amplitude width is made to coincide with the overlap width of the seed vat sheets 1, 1, water can be sprayed accurately in a zigzag shape on the overlapped portion.

  The rice cultivation technique using the seed laying method according to the present invention is basically as described in Patent Document 1. That is, using the seed laying method according to the present invention, the seed bud sheet is laid on the paddy field. After laying, the paddy field is irrigated, the water is stored between the paddy field and the seed seed sheet, and the seed seed sheet is suspended in the water. A few days later, weeds grow on the paddy field, and the main leaves develop from the monocotyledonous pods of the monocotyledonous plants in the weeds. When this state is reached, the water stored in the paddy field is dropped. After that, if water management and additional fertilization are performed appropriately, rice can be grown well without using herbicides such as agricultural chemicals.

  If the method which concerns on this invention is employ | adopted, a drainage ditch | groove can be provided in the location where a seed soy does not exist, laying a seed soot sheet | seat in a paddy field with a rice transplanter. The drainage channel has a pit in the paddy field, and when water is accumulated in the pit, the water is discharged from the pit well. Even if the recess is not in contact with the drain, the water in the recess is discharged into the drain by capillary action in the soil. Therefore, in the rice cultivation technique described in Patent Document 1, there is almost no place where water has accumulated other than the drainage ditch after falling from the paddy field. Can be prevented from growing and the yield of rice being reduced.

  As a result of comparing the case where the drainage groove is provided by adopting the method according to the present invention and the case where the drainage groove is not provided without adopting the method according to the present invention in the Crop Science Laboratory, Faculty of Agriculture, Ehime University, There was a significant difference in the yield of. In other words, when there was no drainage ditch, some of the roots of rice existed on the paddy surface, so rice lodging was observed at a considerable rate (30.5%). On the other hand, when drainage grooves were provided, the extent of rice lodging was considerably low (2.0%). Therefore, when the drainage ditch was provided, the rice yield was 486 kg / 10a, whereas when the drainage ditch was not provided, the rice yield was 372 kg / 10a, indicating a significant difference in the yield. It was observed.

  As described above, the method according to the present invention contributes to the novel rice cultivation technique described in Patent Document 1, can greatly increase the amount of rice harvested, and is useful for agricultural techniques.

It is the schematic side view which showed an example of the apparatus for implementing the laying method which concerns on this invention. It is the schematic side view which showed the other example of the apparatus for implementing the laying method which concerns on this invention. It is a schematic diagram for showing the seed soot row and the seed soot absent row of the soot seed sheet used in the present invention. In this figure, the seed pod is shown so that it can be visually observed, but generally the seed potato is present inside the seed potato sheet and cannot be visually observed. It is a schematic diagram which shows an example of the watering apparatus used when implementing the laying method which concerns on this invention. This watering device is mounted on a rice transplanter (not shown). It is a schematic diagram which shows the other example of the watering apparatus used when implementing the laying method which concerns on this invention. This watering device is mounted on a rice transplanter (not shown).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seed sheet 2 Seed sheet roll 4a, 4b Arm which connects Seed sheet roll and seedling stand 5 Seed sheet roll mandrel 7 Submerged floating fiber structure 8 Seed 9 Seed row 10 Seedless absence row 11 Rice transplanter 12 Moat Cutting blade 13 Float of rice transplanter 14 Seedling stage of rice transplanter 15 Water supply hose 16 Bar 17 Sprinkling nozzle 18a, 18b Ring 19 Stopper 20 Heavy load 21 Connecting rod 22 Rotating body

Claims (6)

  At the rear end of the rice transplanter traveling on the paddy field, by attaching a seed seed sheet roll in which the seed seed sheet is wound in a roll shape, and moving the rice transplanter forward, In the method of laying the seed potato sheet, the seed moth sheet is an underwater floating fiber structure, and a plurality of seed potato rows are seeded in rows in the longitudinal direction of the seed potato sheet, and between the seed potato rows When the seed sheet is laid in the paddy field, the drilling blade provided in the rice transplanter at the position of the paddy field where at least one row of seed seeds is in contact, A method for laying a soot seed sheet, characterized in that a drain groove is dug parallel to a row where no soy seed exists.   2. The seed laying method according to claim 1, wherein the underwater floating fiber structure is a cotton nonwoven fabric.   2. The seed laying method according to claim 1, wherein an excavating blade is provided on the ground contact surface of the float of the rice transplanter.   A raising / lowering seedling platform provided in the rice transplanter and a seed rod sheet roll mandrel are connected via an arm, and the seed basket sheet roll is also raised and lowered in response to the raising / lowering of the seedling loading table. Item 3. A method for laying a seed vat sheet according to item 1.   The method for laying a seed vat sheet according to claim 1, wherein a watering device is mounted on the rice transplanter.   The watering device comprises a watering hose, a bar for swinging the watering hose, and a watering nozzle attached to the tip of the watering hose. The bar and the watering hose are connected to each other. 2. The seed laying method according to claim 1, wherein the seeding sheet is connected to each of the two rings and is movable between the two rings.

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