JP2009278965A - Weed suppressing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weed suppressing method capable of suppressing weeds by achieving greening by spray coating of Centipedegrass even for existing slopes of bad conditions. <P>SOLUTION: This weed suppressing method includes suppressing the occurrence of weeds by performing spray coating of Centipedegrass seeds to a weed growing land, and greening the weed growing land by Centipedegrass. In more details, the weed suppressing method includes a spring herbicide scattering step of scattering a herbicide on the weed growing land in a spring period, a spray coating step of spraying Centipedegrass seeds to the weed growing land in a period from spring to autumn, a pretreating herbicide scattering step of scattering a herbicide to the weed growing land just before the spray coating step, and a ground exposing step of exposing the ground of the weed growing land before or just after the spray coating step. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a weed control method that suppresses the generation of weeds by spraying a centipede grass on a weed habitat such as a slope on a paddy shore that requires a great deal of labor for weeding work.

  Arrangement of arable land in rural development projects has played a major role in the accumulation and expansion of farmland. On the other hand, in the hilly and mountainous areas, large ridges are formed, and weeding work is a heavy burden for aging rural villages. The reality is that this inability to manage the shore is about to increase abandoned farmland. Therefore, in recent years, it has been attempted to reduce weeding work by suppressing weed generation by slope planting with centiped grass.

  On the other hand, the following technique is described in Patent Document 1 below. In order to suppress weeds, after we planted with buckwheat and comfrey and so on, we sprayed centipedegrass seeds with the soil, and weeded the weeds. This is because it was difficult to plant the slope by spraying with centipede glass alone, and it seems that such a complicated and inefficient method was taken.

Japanese Patent Application Laid-Open No. 2005-198606

  By the way, the conventional centipede glass spraying method on the slope was an effective method in the newly created slope, but there were few successful cases in the existing slope where weeds were already overgrown. In existing slopes, greening by spraying is not successful because of (1) competition with weeds, (2) low germination rate, and (3) damage caused by ants.

  Therefore, in existing slopes, methods using seedling transplanting and planting are widely used. However, this method requires a lot of labor, manpower, and time, so it is not popular.

  The present invention has been made in view of such problems, and weeds that can suppress weeds by succeeding in greening by spraying with centipeat grass even on existing slopes with poor conditions. It aims at providing the suppression method.

  In order to solve the above-mentioned problem, the weed control method according to the present invention is the generation of weeds by spraying seeds of centipeat grass against the weed habitat, and greening the weed habitat with centiped grass. In the spring weed control method, a spring herbicide spraying step of spraying a herbicide on the weed habitat in the spring, and a centipeat grass seed on the weed habitat in the period from spring to autumn Before and immediately after the spraying construction process, and before or immediately after the spraying construction process, and before the spraying construction process. And a ground exposure step for exposing the ground.

  Moreover, the weed suppression method according to the present invention is a method for suppressing weeds by performing spraying of seeds of centipeat grass on a weed habitat, and greening the weed habitat with centiped grass. In the spring time, a spring herbicide spraying step for spraying a herbicide on the weed habitat, an incineration step for burning the weeds dead by the spring herbicide spraying step, and immediately after the incineration step, A spraying process for spraying seeds of centipeatgrass on the weed habitat, and an autumn / winter herbicide spraying the weed habitat on the weed habitat in the period from autumn to winter the previous year of the spraying process And a process.

  According to the present invention, it is possible to suppress the generation of weeds by succeeding in greening by the centipede grass spraying operation even on the existing slope with already overgrown weeds.

Drawing 1 is an operation process figure of the weed control method by spraying construction concerning a 1st embodiment. FIG. 2 is a diagram illustrating the pressure suppressing device according to the first embodiment. FIG. 3 is a diagram illustrating the pressure suppressing device according to the first embodiment. FIG. 4 is a diagram illustrating an example of the weed suppression method according to the second embodiment. FIG. 5 is a diagram illustrating an example of the weed suppression method according to the second embodiment.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The work process of the weed control method according to the first embodiment is shown in FIG. Moreover, the structure of the pressure suppression apparatus which concerns on this embodiment is shown in FIG.2 and FIG.3. In this embodiment, it is necessary to comprehensively carry out herbicide spraying, spraying, suppression, and ant countermeasures. In addition, a device used for suppression was manufactured to improve the efficiency of suppression.

  Specifically, as a first aspect of the invention, a material obtained by spraying a herbicide 2 to 3 times on an existing slope, and mixing seeds of centipede grass with a mixture of paper (including pulp) or fiber. Invented a weed control method that performs both spraying and then performing both the ant countermeasures and the suppression of seeds to the ground regardless of the order. Moreover, as invention 2, the pressure reducing apparatus which invented several hemispherical protrusions on the lower surface of the metal pressure suppression plate used for pressure suppression of the weed suppression method of the invention 1 was invented.

  In order for centipedegrass to compete with weeds, the relationship between the centipedegrass spraying date and the herbicide application date is important. Before spraying, 2 to 3 herbicide sprays are required, but the final herbicide spray must be sprayed 1 to 7 days before the spraying date. At that time, the height of the weeds that have germinated again is preferably 5 cm or less. For that purpose, the herbicide spraying performed before that must be performed 1 to 2 months before the final herbicide spraying.

  That is, in order to eradicate perennial weeds, it is desirable to perform the herbicide spraying twice. Furthermore, to ensure, it is best to spray the herbicide once from September to November of the previous year.

  In spraying construction, we must be careful of seed runoff due to rain. It is necessary to use a mixture of glue and fiber, not just raw materials for paper, so that the seeds can easily adhere to the ground surface.

  In order to increase the germination rate, it is necessary to reduce the pressure immediately after spraying. The sprayed seeds are often unable to germinate because weeds and moss on the surface obstruct water supply from the ground. In addition, seed erosion due to rain has lowered the germination rate. By pressing down immediately after spraying, the surface is exposed except for moss on the surface, the seeds are in close contact with the ground, and the supply of moisture from the ground is ensured. In addition, seed depression can be prevented by creating a recess on the surface of the earth by repression. In addition, you may perform this pressure suppression work before spraying construction.

  In order to prevent ant damage to centipeatgrass seeds, it is essential to spray insecticides immediately after spraying.

  As a device used for pressure reduction, a pressure suppressor that suppresses the ground currently on the market is equipped with an engine and has a weight of 50 kg or more. This is not something that can be used on the slope. However, the suppression using tools such as hooks is hard work and the work efficiency is poor. Therefore, the pressure suppression device shown in FIGS. 2 and 3 that can be used on a slope with a slope has been devised.

  As shown in FIG. 2, a concrete crusher was used for the steep slope, and a pressure plate with a hemispherical protrusion attached to the iron plate at the tip of the crusher was produced, and used as a pressure suppression device. The power source used electric power and thought about weight reduction. By using this pressure reducing device, it was possible to make a 1 cm to 2 cm concave portion on the ground surface while suppressing the seeds. As a result, the seeds were brought into close contact with the ground and the seeds could be prevented from running away.

  As shown in FIG. 3, an iron plate with the hemispherical protrusions attached to the lower surface of the vibration motor was attached to the slope of the gentle slope, and a lightweight pressure suppressor with a handle was manufactured.

Based on the above, the test sections A to E were set on the existing slopes, and a demonstration experiment was conducted. The results are shown in Table 1 below. In Table 1, the work performed in each test section is displayed in a list form XX.

  As shown in the evaluation of slope revegetation in Table 1, test plots A, B and D failed, and test plot C failed, but weed removal was inadequate, and it took time and effort for subsequent weeding. Test area E is a successful example.

  In detail, in the test zones A to D, “spreading the herbicide in the autumn”, “spreading the herbicide one to two months before spraying”, “spreading the herbicide just before spraying”, “centipede” Any one of the operations of “glass spraying”, “crushing work”, and “insecticide spraying” is not performed, and all other work is performed. In the test area E, all these operations are performed.

  In the test area A, “spreading of the herbicide just before spraying” was not performed, but spraying was performed immediately after weeding with a mower. In the test area B, “crushing work” was not performed. In Test Zone C, “herbicide spraying in autumn of last year” was not performed. In Test Zone D, “insecticide spraying” was not performed. Test Zone E performed all herbicide spraying, insecticide spraying, and suppression work.

  As a result, in the test area A, although germination occurred, the weeds germinated earlier, and they lost growth due to growth competition with the weeds. In the test plot B, almost no germination was observed. Further, although test area C germinated, perennial weeds remained in part, and weeding by hand-cutting work was necessary. It took a lot of effort. In addition, it can be said that the test plot D is a failure such as a considerable unevenness in germination between the place where the ant was damaged and the place where there was no ant damage, and the need for spraying again and transplanting seedlings later. Test plot E had a high germination rate and was not damaged by ants. Although some annual weeds germinated, there was no effect on slope planting.

  From the above results, in the present embodiment, in order to achieve weed suppression by slope planting in the slope planting by “centipede glass spraying construction”, “spraying herbicides 1 to 2 months before spraying” ( Spring herbicide application), "herbicide application just before spraying" (herbicide application just before spraying), "crushing work", and "insecticide application" are essential. Herbicide application) is desirably considered to be essential. However, in areas where there is little food damage caused by ants, it is possible to omit the “insecticide spraying” operation.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. Similarly to the first embodiment, in the weed suppression method according to the second embodiment, the seeds of centipede grass are sprayed onto the existing shore slope, and the occurrence of weed is suppressed by greening the slope. .

  FIG. 4 is a diagram illustrating an example of the weed control method according to the second embodiment, in which FIG. 4 (a) shows Example F and FIG. 4 (b) shows the work contents of Example G and those. It is a table | surface which shows a time. Moreover, FIG. 5 is a figure which shows the Example of the weed control method based on 2nd Embodiment, FIG. 5 (a) is Example H, FIG.5 (b) is the work content of Example I, and those. It is a table | surface which shows the time which performs.

  In these Examples F to I, the desired work content is appropriately performed at the desired time in accordance with the time of performing the spraying construction. Example F is an example in which spraying is performed from mid-June to mid-July, Example G is an example in which spraying is performed from late April to early June, and Example H is sprayed This is an example in which construction is performed from mid-July to late August, and Example I is an example in which spraying construction is performed from late August to early September.

  As shown in FIG. 4 (a), in Example F, first, during the period from September of the previous year to January of the beginning of the year (preferably, September to November), the period from the fall of the previous year to the winter. The first herbicide spray (1) is performed. This autumn / winter herbicide application (1) is carried out mainly to kill perennial weeds such as chigaya to their roots, so it is necessary to apply a herbicide with a high concentration.

  Weeds weeded by spraying herbicides in autumn / winter (1) will be incinerated by the end of March. By this incineration, the moss on the shore is also incinerated. Thus, if the ground surface is exposed by incineration, the seed at the time of spraying can be brought into close contact with the ground, the supply of moisture from the ground to the seed can be secured, and the seed can be germinated with certainty.

  Subsequently, weeds grow again in the spring, so the second herbicide spray (2) is performed between late April and mid-May. It is desirable to eradicate perennial weeds such as horsetail by this spring herbicide spray (2). After the herbicide spraying (2), incinerate withered weeds. By this incineration, the surface of the ridge slope is exposed. Instead of incineration, the ground surface may be exposed by a mowing process of mowing weeds with a mower.

  Subsequently, the third herbicide spraying (3) is performed 3 to 1 days before the spraying construction, and the centipede grass seeds are sprayed 1 to 3 days after the immediately preceding herbicide spraying (3). In Example F, spraying is performed from mid-June to mid-July. This spraying construction produces a mixture of centipede grass seeds mixed with curative paper (pulp), glue (may be cotton fiber), water, fertilizer, etc., and this mixture is sprayed directly onto the slope. It is done by spraying.

  In this way, when the last herbicide spraying (3) is performed immediately before spraying, weeds can be killed in about two weeks. On the other hand, since centipede grass is a seed, no herbicide is applied, and then germinates in about 10 to 14 days and begins to grow. Weeds reappear after about one month after spraying with the herbicide spray (3), and grow faster than centipedgrass, but at this time, centipedegrass also grows to some extent, so without losing to weeds It will be possible to continue growing.

  Therefore, in order to delay the occurrence of weeds as much as possible after sowing of centiped grass, it is desirable that the last herbicide spraying (3) be performed just before spraying as much as possible, but when it rains, the herbicide spraying can be performed. Taking this into consideration, in Example F, it is set 1 to 3 days before spraying. However, taking into consideration that it will continue to rain for a few days, if the last herbicide spraying (3) is performed 7 days before spraying construction as in the first embodiment, the centipede grass will not lose to weeds. It is possible to grow.

  If we consider only delaying the generation of weeds, it may be possible to spray the herbicide after spraying, but the day of spraying is difficult because the slope is wet. Since small shoots may emerge from the seeds of the grass, the herbicide application is undesirable. Therefore, in this embodiment, the herbicide spraying (3) is carried out 1 to 3 days before the spray construction.

  For 1 to 2 years after spraying, weeding by mowing is necessary. Centipede seedlings are very small and weeds grow faster, so weeds need to be removed by mowing. In order to avoid cutting seedlings of centipedgrass, the first year may be cut to a height of about 5 cm from the ground, and the second year may be cut to a height of about 10 cm from the ground to remove weeds.

  Subsequently, Examples G to I will be described in order. However, since the work contents of Examples G to I are mostly the same as those of Example F, the work contents different from Example F and the different execution times are mainly used. explain.

  In Example G, as shown in FIG. 4 (b), the herbicide spraying (1) in the fall and winter in September-January (preferably, September-November) of the previous year of spraying, and this herbicide spraying ( Incineration of the weeds killed by 1) is carried out in the same manner as in Example F above. Spring herbicide application (2) is performed from early April to late April. After weeding (2), weeds will die in about two weeks. After that, weeds will be incinerated and then sprayed immediately (from late April to early June). After that, weeding work will be performed as appropriate for 1 to 2 years.

  In Example G, spraying work is performed at an early stage from late April to early June, so unlike the other Examples F, H, and I, the last herbicide spraying (3) is not performed. However, in Example G, weeds withered withering just before spraying work (weeds withered by herbicide spraying (2)) are carried out, and this incineration work is performed with the last herbicide spraying (3). The same effect | action was played and also in Example G, the centipede glass grew well like the other Examples.

  In Example H, as shown in FIG. 5 (a), herbicide spraying (1) in the previous September to January (preferably September to November) of spraying construction, and herbicide spraying in this fall and winter ( Incineration of the weeds killed by 1) is carried out in the same manner as in Example F above. Spring herbicide application (2) is carried out from the beginning of April to the end of May, after which dead weeds are cut and removed. This work is carried out 2 to 3 weeks before the spraying work, and at the end, the cut weeds are removed cleanly. At this time, if the weeds are small, a string type mower can be used, and the weeds will be scattered and there is no need to remove the weeds.

  Subsequently, spraying is carried out after the last herbicide spraying (3) is carried out 1 to 3 days before the spraying construction (from early July to mid-August). Then, watering is performed and weeding work is performed as appropriate. Irrigation is carried out in this Example H, since the sowing time is from the beginning of July to the middle of August when the rainy season is low, and it is necessary to prevent germination and withering of centipedgrass and provide water necessary for growth Because there is.

  In Example H, the spring herbicide spraying (2) is performed by the end of May because this embodiment is performed on the shore of rice fields and the herbicide spraying is finished by the time of rice planting. Moreover, the reason why weeds removed by herbicide spraying (2) are removed by cutting instead of incineration because it is not preferable to incinerate around the rice field after planting.

  In Example H, even if the dead weeds were not incinerated immediately before spraying, the dead weeds were incinerated after spraying the herbicide in autumn / winter (1). The surface is exposed. Therefore, it is inferior to the case of incineration immediately before, but also in Example H, the seeds sowed can be brought into close contact with the ground, and the seeds were actually germinated and then grew well. . Thus, once the ground surface is exposed by incineration or pressure reduction (first embodiment), it is considered that the effect of the exposure can be sustained for about one year.

  Next, in Example I, as shown in FIG. 5 (b), the herbicide spraying (1) in September to January (preferably September to November) of the previous year of spraying and the weeding of this fall and winter Incineration of weeds withered by agent spraying (1) is performed in the same manner as in Example F above. Spring herbicide spraying (2) is carried out from the beginning of April to the end of May, and then the dead weeds are cut and removed in the same manner as in Example H.

  Subsequently, spraying is carried out after the last herbicide spraying (3) is carried out 1 to 3 days before the spraying construction (from early July to mid-August). Then, weeding work is performed as appropriate.

  As described above, the examples F to I according to the second embodiment have been described in detail. According to the examples F to I, the existing slope is well greened by the centiped grass instead of the weeds, and the growth of the weeds is achieved. Succeeded to suppress. This requires some weeding work by high mowing for 1 to 2 years after sowing, but weeding work for weeds is unnecessary for about 20 years thereafter.

  In Examples F to I, ant damage countermeasures are not mentioned, but it is considered that ants live on the existing slopes where spray construction was performed, and as appropriate in the same manner as in the first embodiment. It is necessary to spray the agent. Moreover, in Examples F to I, it is desirable to give fertilizer appropriately as needed in order to promote the growth of centiped grass.

  As described above, the first embodiment and the second embodiment according to the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the gist of the present invention. Is possible. The management situation of the paddy shore varies from farmer to farmer, and since it is very different, it is necessary to implement according to the weed growth situation. In addition, the period of each work may be around 1 or 2 months depending on the climate of the land. For example, the Tohoku region and the Kyushu region are different, and it is considered that the time suitable for each work will be greatly different in places where the altitude is high and low.

  Moreover, although the said embodiment demonstrated the case where the weed control method based on this invention was applied to the existing slope, it cannot be overemphasized that it can apply also to flat land, such as flat ridges other than a slope. In addition, other pesticides can be selected as appropriate for the pesticides used as herbicides.

Claims (6)

In the weed control method to suppress the occurrence of weeds by spraying centipeat grass seeds against the weed habitat, and greening the weed habitat with centipede grass,
A spring herbicide spraying step of spraying a herbicide on the weed habitat in the spring season;
A spraying process that sprays seeds of centipeatgrass on the weed habitat in the period from spring to autumn,
Just before the spraying construction process, a herbicide spraying process immediately before spraying a herbicide on the weed habitat,
Before or immediately after the spraying construction step, a ground exposure step of exposing the ground of the weed habitat, and
A method for controlling weeds, comprising:   The weed control method according to claim 1, further comprising an autumn / winter herbicide spraying step of spraying a herbicide on the weed habitat during a period from autumn to winter of the previous spraying step.   The weed control method according to claim 1 or 2, wherein the ground exposure step is an incineration step of incinerating weeds withered by the herbicide before the spraying step.   The weed suppression method according to claim 1 or 2, wherein the ground exposure step is a pressure reducing step of forming irregularities on the ground using a pressure suppressor before or immediately after the spraying construction step.   The weed control method according to any one of claims 1 to 4, further comprising an insecticide spraying step of spraying an ant insecticide to the weed growing area. In the weed control method to suppress the occurrence of weeds by spraying centipeat grass seeds against the weed habitat, and greening the weed habitat with centipede grass,
A spring herbicide spraying step of spraying a herbicide on the weed habitat in the spring season;
An incineration step of incinerating the weeds withered by the spring herbicide application step;
Immediately after the incineration step, spraying step of blowing centipeat grass seeds against the weed habitat, and
A herbicide spraying process in autumn and winter in which a herbicide is sprayed on the weed habitat during the period from autumn to winter in the previous year of the spraying construction process;
A method for controlling weeds, comprising: