JP2011019500A - Weeding-suppressive machine and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weeding-suppressive machine acting only on the proximity of the water surface of a paddy field, thus improving productivity in the organic farming, and, in its turn, contributing to environmental problems' solution, ecological system preservation, or the like, as well. <P>SOLUTION: Close to the water surface of a paddy field, an external tractor 4 is mounted with a weeding-suppressive implement 1 generating waterflows in its advancing direction and a direction perpendicular to the advancing direction. Each of the waterflows in these two directions is formed by an agitating roller or water-jet nozzle and a waterflow-dispersive plate 3 having the function to make the direction of the resulting waterflows migrate. Besides, the weeding-suppressive machine is provided with a height control mechanism constituted of wheels and a float to form waterflows only in the proximity of the paddy field surface, thus enabling the weeding-suppressive effect to be improved. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus used for weeding or suppressing weeds in rice cultivation, and more particularly to an apparatus for weeding or suppressing weeds by stirring only the surface layer of water in paddy fields.

  In the process of rice cultivation, weeding and suppression are indispensable work to maintain the steady growth of rice. In the old days, this work was done using tools by hand and manpower, but in recent years, with the decline in the population engaged in agriculture, the method of spraying herbicides has become the mainstream for labor saving.

  On the other hand, organic farming that does not use chemical fertilizers and pesticides has been proposed for the purpose of reducing the environmental load of pesticides, preserving ecosystems, and ensuring food safety. In organic farming, instead of using chemicals, for example, fertilizers are used by aging waste from the food industry and agriculture / forestry / livestock industry, which is also significant in terms of waste reduction and resource recycling.

  Specific examples of weed suppression methods in organic agriculture include Aigamo duck farming, which is partly implemented. This is to release Aigamo young birds to paddy fields at the time of rice planting, fattening Aigamo using the plants targeted for weeding and weeding, and shipping them as meat at the time of rice harvesting, the effect is remarkable, Because animals are used, there are uncertain factors that differ from mechanical methods, such as Aigamo being attacked by other carnivores and raptors.

  On the other hand, various devices that mechanically control weeding are developed and marketed. For example, Patent Document 1 includes a paddy weeding machine that has a streak weeding mechanism that works between planted shoots and a weeding mechanism that works between strains in planted shoots, and that can perform weeding between strains with high efficiency. Is disclosed. Patent Document 2 discloses a paddy weeding machine provided with a mechanism for preventing the seedling from being folded or pulled out.

  However, in the techniques disclosed in these, the bottom of the paddy soil is agitated, resulting in the induction of dormant plant seeds, etc. near the water surface in a relatively deep part of the soil, Although weeds will not be seen immediately after weeding, weeds may occur again after a while.

  In addition, in a conventionally used device that rotates a roller and stirs paddy fields and exhibits a weeding effect, a water flow is generated only in the rotation direction of the roller, and a water flow is generated in a direction perpendicular to the rotation direction in the horizontal plane. Therefore, sufficient effects were not always obtained for the weeding suppression between strains.

  JP 2003-204708 A   JP 2002-045003 A

  Therefore, an object of the present invention is to provide a weeding and weeding machine that works only near the water surface of paddy fields, to improve productivity in organic agriculture, and to contribute to solving environmental problems and preserving ecosystems. It is to be.

  In order to solve the above problems, the present invention has been made as a result of adding a component having a simple structure to an existing weed suppressor and examining an operation method.

  That is, the present invention is a paddy weeding weeder characterized by having a means for generating a water flow in a horizontal direction substantially perpendicular to the traveling method and traveling direction of the external tractor attached to the external tractor. .

  Further, the present invention is characterized in that the means for generating water flow includes a rotating body having fins, and a water flow dispersion plate for shifting the water flow generated by the rotating body in a substantially vertical direction. It is a grass machine.

  Further, the present invention is the paddy weed suppressor as described above, wherein the means for generating the water flow has a water jet nozzle.

  Further, the present invention is the paddy weed suppressor as described above, wherein the means for generating the water flow has a mechanism for keeping the position constant from the water surface of the paddy field.

  Further, the present invention is the method for using the paddy weed suppressor described above, characterized in that the means for generating the water flow is operated in the vicinity of the paddy water surface.

  In the weeding and weeding machine according to the present invention, there is a mechanism for keeping the position of the means for generating water flow from the surface of the paddy field constant, so that only the vicinity of the surface of the paddy field and the surface layer of the soil are stirred by the water flow. Is possible. Moreover, since it has a mechanism to disperse the water flow in two directions in the horizontal plane, it is possible to sufficiently stir not only between the seedling streaks but also between the individual seedling stocks constituting the streaks. Thus, work efficiency is improved.

  In addition, basically, since a water flow dispersion plate is only added to a conventional weeding machine using a stirring roller, it is also a great feature that the production can be performed at low cost. In order to obtain a stronger water flow, a pump is mounted on the external traction machine, and water pumped from the pump is ejected from the nozzle. Similarly, the water flow is dispersed by the water flow dispersion plate and the water ejection direction of the nozzle is adjusted. By doing so, it is possible to improve the effect of weeding suppression.

  The weeding and weeding machine of the present invention is basically used by being attached to an external traction machine. Therefore, if a hydraulic device or the like for moving the attachment up and down is attached to the external traction machine side, a means for generating a water flow is thereby obtained. Height adjustment, that is, the distance from the water surface of the paddy field can be set, and the height adjustment can also be done by providing a height adjustment auxiliary wheel or a height adjustment float on the means for generating water flow. Is possible.

  Schematic which shows an example of the weeding suppression machine concerning embodiment of this invention   FIG. 2 (a) is a side view, and FIG. 2 (b) is a plan view.   FIGS. 3A and 3B are diagrams showing a first embodiment of the present invention, FIG. 3A being a front view, and FIG. 3B being a side view.   FIG. 4 is a diagram showing a first embodiment of the present invention, in which FIG. 4 (a) is a front view and FIG. 4 (b) is a side view.

  Next, embodiments of the present invention will be described with reference to specific drawings.

  FIG. 1 is a schematic diagram illustrating an example of a weed suppressor according to an embodiment of the present invention. In FIG. 1, 1 is a weed control machine, 2 is a means for generating a water flow, 3 is a water flow dispersion plate, and 4 is an external traction machine. In this example, the means 2 for generating a water flow is a rotating body having fins frequently used in a conventional weeder and is called a stirring roller.

  2 is an enlarged view of the water flow generating means 2 and the water flow dispersion plate 3 in FIG. 1. FIG. 2 (a) is a side view and FIG. 2 (b) is a plan view. In FIG. 2, the arrow shown with the broken line shows the direction of a water flow. In the example shown in FIG. 2, the water flow generating means 2 generates a water flow in the right direction in the figure in a direction parallel to the traveling direction of the external traction machine 4 by the counterclockwise rotational movement in the figure. The direction of the generated water flow is shifted by the water flow dispersion plate 3 in the vertical direction in the horizontal plane.

  Next, examples of the present invention will be described with reference to specific drawings.

  FIGS. 3A and 3B are diagrams showing a first embodiment of the present invention, in which FIG. 3A is a front view and FIG. 3B is a side view. In this embodiment, a stirring roller 6 is used as a means for generating a water flow, as shown in FIG. Five stirring rollers 6 are attached via the machine body horizontal main shaft, and can simultaneously weed between five seedlings.

  Similarly, the water flow dispersion plates 5 are attached to the rear part of the stirring roller 6 via the water flow dispersion plate connecting rods 11 and the water flow dispersion plate support rods 12, and the water flow dispersion plates only on the inner side at both ends. 5 is attached, and together with the stirring roller 6, it is connected to an external traction machine (not shown) by an external traction machine connection portion.

  Further, the height of the water flow dispersion plate 5 can be adjusted by the water flow dispersion plate horizontal support shaft and the height adjustment knob 13. Furthermore, in the present embodiment, the machine body height adjusting wheel 17 is provided, and the distance between the stirring roller 6 and the water flow dispersion plate 5 from the soil surface can be arbitrarily set.

  FIG. 4 is a view showing a second embodiment of the present invention, FIG. 4 (a) is a front view, and FIG. 4 (b) is a side view. In the present embodiment, a plurality of water ejection nozzles 20 are used as a device for generating a water flow, and a mechanism for ejecting water sucked up from the water suction portion 23 by the water supply pump 35 is provided.

  In this example, unlike the first embodiment, the ejection hole of one water ejection nozzle 20 is branched into a plurality of parts, and the height adjustment of the ejection nozzle part and the front / rear pendulum movement, the left / right pendulum movement connecting part 33 are provided. Therefore, it is possible to adjust the ejection of water in multiple directions, and no water flow dispersion plate is required. However, it is of course possible to adjust the direction of the water flow by using the water flow dispersion plate with only one direction of nozzle ejection.

  In the present embodiment, the nozzle height float 21 is provided, and the distance of the water ejection nozzle 20 from the water surface of the paddy field can be arbitrarily set. However, in this case as well, as in the first embodiment, it is possible to arbitrarily set the distance of the water ejection nozzle 20 from the soil surface by attaching the machine body height adjusting wheel 17.

  Since the weed suppressor of the first embodiment and the second embodiment described above are both provided with a height adjustment mechanism in the weed suppressor itself, the water flow is only applied to the vicinity of the paddy water surface. Can be generated. According to the knowledge obtained by the present inventors, when a water flow is generated in a portion within approximately 50 mm from the surface of the water, the seeds existing in the deep part of the soil as described above are not activated, It becomes possible to continue the effect of weeding suppression.

  As described above, according to the present invention, a herbicidal weeder capable of generating water currents in two directions and having a certain effect between seedlings can be obtained. The area that contributes to system maintenance and food safety is extremely large.

  The present invention is not limited to the above-described embodiment. For example, the height of the weeding weeder is adjusted by the vertical movement mechanism of the attachment attached to the external traction machine. It goes without saying that design changes within a range that does not depart from the gist including various modifications and corrections that can be conceived by those who have ordinary knowledge of the above are included in the present invention.

DESCRIPTION OF SYMBOLS 1 Weeding suppression machine 2 Means 3 to generate water flow 3 Water flow dispersion plate 4 External traction machine 6 Stirrer roller 7 Rice protection cover 8 Stirrer roller rotation connection shaft 9 Connection shaft support rod 10 Aircraft horizontal main shaft 11 Water flow distribution plate connection rod 12 Water dispersion plate support rod 13 Water dispersion plate horizontal support rod and height adjustment knob 14 Airframe main shafts 15, 28, 29 External traction machine connection portion 16 External power introduction portion 17 Airframe height adjustment wheel 18 Wheel vertical support shaft 19 Wheel horizontal support Axis and height adjustment knob 20 Water ejection nozzle 21 Nozzle height adjustment float 22 Float height adjustment knob 23 Water suction part 24, 25 Water ejection nozzle conduit 26 Machine body main shaft 27 Water suction introduction pipes 28, 29 External traction machine connection part 30 Main shaft, jet nozzle and water supply conduit connecting parts 31, 32 telescopic hose 33 height adjustment of jet nozzle part, front / rear pendulum movement, left / right pendulum movement connecting part 3 Height adjustment and longitudinal pendulum movement of water intake conduit portion, the left and right pendulum movement connecting portion 35 the feed water pump

Claims (5)

  A paddy weeding weeding machine, characterized in that it has means for generating a water flow in a horizontal direction substantially perpendicular to the traveling direction of the external traction machine and the traveling direction of the external traction machine.   2. The paddy weed suppressor according to claim 1, wherein the means for generating the water flow includes a rotating body having fins and a water flow dispersion plate for shifting the water flow generated by the rotating body in a substantially vertical direction. .   The paddy weed suppressor according to claim 1 or 2, wherein the means for generating the water flow has a water jet nozzle.   The paddy weed suppressor according to any one of claims 1 to 3, wherein the means for generating the water flow has a mechanism for keeping the position constant from the water surface of the paddy field.   The method for using the paddy weed suppressor according to any one of claims 1 to 4, wherein the means for generating the water flow is operated in the vicinity of the surface of the paddy field water.

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