JPH05137433A - Method for applying fertilizer or the like to paddy field - Google Patents

Abstract

PURPOSE:To apply fertilizer or an agricultural chemical to a paddy field without requiring particular labor by making fertilizer or an agricultural chemical into a liquid state at a water supply inlet of a paddy field in a dehydrated state and feeding the fertilizer or the agricultural chemical together with irrigation water from the beginning of supplying irrigation water for >= half of scheduled feed time. CONSTITUTION:At a water supply inlet 21 of a paddy field 1 in a dehydrated state, fertilizer or an agricultural chemical is made into a liquid state, fed together with irrigation water to the paddy field 1 from the beginning of supplying irrigation water for >=1/2 of scheduled feed time to apply the fertilizer or the agricultural chemical 3 to the paddy field 1 without requiring particular labor. Ammonium sulfate or a herbicide is dissolved in water as the fertilizer or the agricultural chemical, respectively, mixed with a colorant such as red one and the red agent is fed from the water supply inlet 21 to the paddy field 1 for 2 hours of the latter half among 4 hours feed time of irrigation water so that the fertilizer or the agricultural chemical 3 is proved to be distributed till the vicinity of a water outlet 22 of the paddy field 1 (approximately to the whole area) within about 2 hours after completion of water supply.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for applying fertilizers or pesticides in paddy fields.

[0002]

2. Description of the Related Art In recent years, the structural reform of paddy fields in Japan has progressed, and the unit area of paddy fields has increased (in most cases, 30
The water for paddy fields has also been pipelined, and it has become possible to supply water by twisting the faucet. On the other hand, for the application of fertilizers and pesticides in paddy fields, the use of power spreaders is becoming widespread, but it is difficult to apply them evenly in vast paddy fields, and it is more difficult to apply them manually. , It is difficult to apply more evenly, and the effort is immeasurable.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the labor of spraying fertilizers and pesticides in paddy fields and to apply fertilizers and pesticides automatically and uniformly by natural force.

[0004]

[Means for Solving the Problems] In order to solve the above problems,
The method of the present invention is

From the beginning of the supply of irrigation water, the fertilizer or pesticide was made into a liquid at the water supply port of the paddy field in a water-stop state.
It comprises a method of applying fertilizers or pesticides in paddy fields, which is based on supplying with the irrigation water for more than half of the scheduled supply time.

That is, the method of the present invention is characterized in that the liquid fertilizer or pesticide is supplied together with the irrigation water, and the supplying time and the starting time thereof are selected.

From the beginning of supplying irrigation water to the liquefied fertilizer or pesticide as described above, from the beginning of its scheduled time,
The fact that the application of the fertilizer or the pesticide evenly can be finally achieved by supplying for a fraction of the time has been made clear by repeated experiments by the applicant.

Hereinafter, description will be made according to an embodiment.

[0009]

Example 1 In order to obtain a water depth of about 4 cm,
In a paddy field of 40 are in a water-stop state having a time of about 4 hours, 30 kg of ammonium sulfate, which is a nitrogen fertilizer colored in red, was supplied from a water supply port together with irrigation water for about 2 hours from the beginning of the water supply.

By supplying the irrigation water for the remaining 2 hours, the colored ammonium sulfate 3 was distributed to the side away from the water supply port 21, as shown in FIG.

However, at the stage of 2 hours after the end of the water supply, the distribution state of the colored ammonium sulfate 3 is approaching the water supply port 21 as shown in FIG. 2, and at the stage of 4 hours after the end of the water supply, as shown in FIG. As shown in, the distribution was almost uniform in the paddy field 1.

[0012]

Example 2 In the paddy field 1 described in Example 1, 30 kilograms of ammonium sulfate colored red was sequentially dissolved in water, and the irrigation water was supplied over 4 hours, and the latter two hours were supplied. It was supplied to Paddy 1 together with the irrigation water.

At the stage where the supply was completed, the ammonium sulfate 3 colored as shown in FIG. 4 was distributed on the water supply port 21 side.

Two hours after the completion of the water supply, the distribution state of the colored ammonium sulfate 3 became closer to the drainage port 22 side, as shown in FIG.

However, even after 4 hours from the completion of water supply, the distribution state of ammonium sulfate 3 colored as shown in FIG. 6 did not reach the entire surface of the paddy field.

As shown in Example 1, when the fertilizer 3 is supplied together with the irrigation water in the first half of the supply of the irrigation water, the fertilizer is distributed to the water supply port side two hours after the supply. Despite the above, the same result cannot be obtained in the opposite case.

The theoretical basis for this point is that when the water is supplied together with the irrigation water in the first half, the rice is stored in the paddy for a longer time, so that the water is more easily diffused in the paddy.
That is, in the case of the first half of the supply, the diffusion due to the subsequent supply of irrigation water is performed, but in the case of the latter half of the supply, it is considered that there is no such diffusion, but this point requires more accurate examination. I think that the.

[0018]

Example 3 Up to a water depth of about 5 cm,
In a paddy field with a water supply of 50 are that requires approximately 6 hours of water supply, 30 kg of blue colored herbicide 2-4D is sequentially dissolved in water, and 2 times from the time of supplying irrigation water.
It was supplied to the paddy field along with irrigation water at the hourly water supply port.

At the time when the supply of the irrigation water is finished, 2 hours after the supply, the distribution of the herbicide 3 is shown in FIG.
As shown in, the distribution is far away from the water supply port 21.

At the stage of 5 hours after the end of the water supply, the distribution of the herbicide approached the water supply port 21 as shown in FIG.

However, at the stage 13 hours after that, the distribution of the herbicide 3 is as shown in FIG.
Although it was very close to 1, the blue color near the water supply port 21 was thin and did not completely return to the water supply port, and the same state continued after that.

As a result, the scheduled time from the beginning of water supply is 3
It has been found that a uniform application is not possible with a one-third supply.

[0023]

Example 4 In the paddy field of Example 3, the colored herbicide 3 was supplied for 3 hours from the beginning of irrigation water supply.

Immediately after the water supply, as shown in FIG.
There was no distribution of the colored herbicide 3 at the water inlet 21.

At the stage of 3 hours after the supply of irrigation water, FIG.
The distribution of the herbicide 3 colored as shown in Fig.
It was close, but not here.

However, at the stage 12 hours after the supply, the distribution of the colored herbicide 3 as shown in FIG. 13 extends to the water supply port, and the blue-colored herbicide 3 is distributed almost uniformly. Came to do.

As in the above embodiment, the applicant (inventor)
Came to the rule of thumb that if fertilizers or pesticides were supplied from the beginning for irrigation water for half of the scheduled water supply time, it would be possible to eventually evenly spread them on the paddy fields. It was

Of course, when the fertilizer or pesticide is supplied for a longer period than half the time, or when the fertilizer or pesticide dissolved in water is supplied together with the irrigation water from the beginning to the end, the fertilizer or pesticide It goes without saying that a uniform distribution cannot be obtained.

The method of the present invention is a method for applying a fertilizer or a pesticide to a paddy field in a water-prohibited state. However, for a paddy field in a flooded state, this method is used after water is once drained from a drainage ditch. Good to do.

Further, in a paddy field in a water-free state, when a crack is present in the ground, if this method is used from the beginning, fertilizer or pesticide will intensively penetrate into the crack, and the subsequent diffusion and uniform distribution. Distribution may be hindered.

For such support, it is advisable to supply only the irrigation water to the paddy field, infiltrate the cracks, and then drain the further supplied water before carrying out the method of the present invention.

[0032]

According to the method of the present invention as described above, the fertilizer or pesticide is simply dissolved in water, and the fertilizer or pesticide is simply dropped and supplied from the irrigation water supply port as shown in FIG. This can be sprayed, and in the past it was possible to save the labor of spraying rice paddies using a sprayer.
It is extremely rational.

Further, conventionally, the fertilizer application and the pesticide application could not be carried out simultaneously because the devices used were different, but in the method of the present invention, they are applied simultaneously at the water supply port. It becomes possible.

As described above, the present invention has great advantages and its value is enormous.

[Brief description of drawings]

[Figure 1]

FIG. 12 is a plan view showing the distribution of fertilizers or pesticides in paddy fields in the course of carrying out the present invention. (Note that the drawings for individual paddy rice are omitted)

FIG. 13 is a sketch showing a state in which a water-soluble fertilizer or pesticide is supplied at the water supply port.

[Explanation of sign]

 1: Paddy field 21: Water supply port 22: Drainage port 3: Fertilizer or pesticide, or area where these are distributed 4: Fertilizer or pesticide supply equipment

[Procedure amendment]

[Submission date] November 12, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a plan view showing a distribution state of fertilizer in Example 1.

2 is a plan view showing a distribution state of fertilizers in Example 1. FIG.

FIG. 3 is a plan view showing a distribution state of fertilizers in Example 1.

FIG. 4 is a plan view showing a distribution state of fertilizers in Example 2.

FIG. 5 is a plan view showing the state of fertilizer distribution in Example 2.

FIG. 6 is a plan view showing the state of fertilizer distribution in Example 2.

7 is a plan view showing the distribution of herbicides in Example 3. FIG.

8 is a plan view showing the distribution of herbicides in Example 3. FIG.

9 is a plan view showing the distribution of herbicides in Example 3. FIG.

FIG. 10 is a plan view showing the distribution of herbicides in paddy fields in Example 4.

FIG. 11 is a plan view showing the distribution of herbicides in paddy fields in Example 4.

FIG. 12 is a plan view showing the distribution of herbicides in paddy fields in Example 4.

[Explanation of signs] 1: Paddy field 21: Water supply port 22: Drainage port 3: Fertilizer or pesticide, or area where these are distributed 4: Fertilizer or pesticide supply equipment

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 00026

[Correction method] Change

[Correction content]

However, after 12 hours from the supply, the distribution of the colored herbicide 3 as shown in FIG. 12 extends to the water supply port, and the blue-colored herbicide 3 is distributed almost uniformly. Came to do.

Claims (2)

[Claims] 1. A fertilizer or pesticide is made into a liquid form at the water supply port of a paddy field that is in a water-stop state, and from the beginning of the supply of irrigation water,
Fertilizer or pesticide application method in paddy field based on supplying together with the irrigation water for more than half of the scheduled supply time 2. A method for applying a fertilizer or a pesticide to a paddy field according to claim 1, wherein the fertilizer or the pesticide is mixed with a coloring agent.