JPS58162690A - Granular acetic soil for adjusting ph of earth and its preparation - Google Patents

Abstract

PURPOSE:To obtain granular acidic soil for adjusting pH of earth, being easily blended with earth uniformly, exerting no bad influence on the breeding of rice seedling at all, by adding an acidic substance to earth having high base substitution capacity so that it is adjusted to a specific pH. CONSTITUTION:(A) An acidic substance (preferabe example; sulfuric acid, hydrohloric acid, nitric acid, acetic acid, citric acid, nitrohumic acid) is added to earth having >=20me/100g base substitution capacity so that it is adjusted to 3.0- 4.5pH, to give the desired granular acidic soil having preferably 0.2-5mm. particle diameters. This soil is further blended with preferably (B) 100-500ppm growth adjustor and (C) <=3wt% total amount of three fertilizer components of nitrogen, phosphoric acid, and potassium or <=2wt% total amount of two fertilizer components of nitrogen and potassium.

Description

DETAILED DESCRIPTION OF THE INVENTION The ijJ of the present invention relates to granular acidic soil for the purpose of adjusting the pH of soil used for cultivating paddy rice in boxes. In detail, soil m'b base substitution capacity (hereinafter referred to as "omoJ") with a high welfare buffering capacity is 2.
Adding MYt to soil of 0 Otori 71002 or higher to improve pH3,
The present invention relates to granular acidic soil adjusted to 0-4.8 and made into granules, and a method for producing the same.

In recent years, in paddy rice cultivation, the introduction of the 4-meter barrier transfer technique using IA*Eiso, the sI culture technique has finally begun to become a system, and the mechanical transplantation of young seedlings has made remarkable progress.

In this mechanized 1 ml transplant, healthy seedlings are particularly desired. In addition to advances in box seedling technology for growing healthy seedlings, the selection of soil used for Seiden greatly influences the growth of rice seedlings, especially soil PR of 4.5 to 5.5. is a superimposed selection.

It is widely known that it is important for soil growth to have a soil value of 5 to 5.5. However, the pn of field soil used for growing ordinary crops is 6 to 7, and the pn of rice field soil also varies depending on the region.
Many of the products have a pH of 6.0 or higher due to the use of silicate lime fertilizer in m* machines.

For the growth of rice seedlings, even if the soil is fertile and has good physical properties, if PR is high, that is, Pi! +/- loss of 5.6 or more, PH6 for my sister,
If the soil is 0 or higher, it is extremely difficult to achieve a level of 4 M' even if sufficient efforts are made to manage the level of growth.

Soil circles tend to cause frequent menstrual disorders (stuffiness) with birds.
Seedling @ disease occurs due to Fusarium cocoons, Vicium cocoons, etc., creating dangerous conditions. Therefore, it is necessary to spray chemicals to control these pests, but it is difficult to ensure that everything is perfect.However, as long as the growth of rice seedlings is not hindered, the above-mentioned disadvantages will not occur if the soil is kept at a low level. . Therefore, when using 1^ soil such as paddy soil or field soil as bed soil for raising rice seedlings, it is necessary to lower the soil radius. Conventionally, the application of sulfur flowers is being promoted to lower the PR of soil. However, since it takes time for ±11PIi to stabilize, preparations must be made before the first sowing. It is also possible to use commercially available llI chroic acid, but it is dangerous and is not suitable for general use. Nitrophic acid has been proposed as another ±111 pH lowering agent, but it is shown in the comparative example below. Growth disorders are likely to appear. Adding such acidic substances directly to the soil used as bedding soil has the disadvantages mentioned above, but it is also necessary to add substances such as nitrophic acid and sulfur which are water bathable and have the effect of lowering PR in small amounts. It is extremely difficult to mix it uniformly into soil.

In view of the current situation, the present inventors have developed a method that does not adversely affect the growth of Akina seedlings and is easy to mix uniformly.
As a result of researching m tsubo adjustment agent, agoO great soil 1
The present invention was developed by focusing on the wrinkling ability of aIft, and the acidic soil of this investigation is made by adding acid to soil with ago of 20 m/1oot or more and adjusting the pH to 3.0 to 4.5. The special benefit is that it is granular soil.

Retired emperor's ago tit earth damage grain ± tN & depends on things and foot line. For example, clay mineral o]1o is montmorillonite 60-100 me/l 00 t, vermiculite 100-150 me/100 t, hydrated halloysite 40-50 m/100 F, illite and chloride group is 10-40 me/1oot, JaliIk
The agO1 engineering is 100-300 ass/100 f. The granular acidic lid structure of the present invention contains these clay minerals and has a total ago of 2 (1 m/l).
Use soil of OO9 or higher.

If the raw material ± warm OlO is insufficient, it may be adjusted by adding tsumugi clay mineral or corrosive. 080 is 20 years old.
Soil with an OO of 9 or more can be maintained at a slightly acidic level of 1 without any noticeable change even if a strong acid is added to it. Preferably, the raw material soil has a corrosion resistance of 1 to 8% by weight,
Preferably contains 2 to 5 weight rice cakes, 01020m/l O
The soil has O2 or higher. The presence of a small amount of corrosion is preferred in order to maintain a hardness of 1 degree when granulation occurs.
Volcanic ash ± II) and clay soil can be combined.

After pulverizing this raw material soil, acidic substances are added to produce PU.
The acidic substance used here is an inorganic acid such as 1 molar soap, hydrochloric acid, or #I salt.

Examples include acid, citric acid, nitrophate, hydrogen salts such as reduced acid hydrogen salts, and hydrogen salts such as phosphoric acid aqueous salts.

The granular acidic soil of the present invention can be produced as follows. First, 01020 m@Ao was used as the raw material soil.

Select soils with or above clay soils and corrosion-rich ±
Adjust by mixing lI. Dry this soil, *
After crushing and sieving to about 100 m or less, an acidic substance is added to adjust the OpH to a predetermined value. At this time, if necessary, add a water-soluble polymer as a granulation aid.

For example, polyvinyl alcohol, carboxymethyl cellulose, methyl cellulose, lignin sulfonate, etc. 0.01-1% by weight, or a growth regulator, etc. 11 For example, an appropriate amount of fertilizer components may be added so that the concentration of pyroligneous vinegar is 100 to 500 ppm.

When adding 1 liter of fertilizer ingredients, 3 Ie of nitrogen, phosphoric acid, and potassium
The total amount of nitrogen by weight is less than 3.

Cali's 2al! : The total weight of the family components should be less than 1kll-12kg.

This p4-depleted soil IK is granulated using a granulator. The particle size is preferably 0.2 to 5 square meters for uniform mixing with the bed soil, and the shape thereof may be not only spherical but also columnar.1 The granular soil of the present invention includes all shapes.

The pit of the granular acidic soil of the present invention is adjusted to 3.0 to 44.0 When paddy soil or moribata soil with a normal pH of 5 to 5 is used as the bed soil, the pit of the granular acidic soil of the present invention is adjusted to 3.0 to 44. It is preferable that the amount used for bed soil pg** is small, but if the amount used is too small, #i uniform & PH1
1111 is difficult, and PHI is not mixed uniformly.
If an IJI agent exists locally, it will cause damage to growth at that location.
According to the research of the present inventors, in the case of granular particles as described above.

Even if granular soil with a pH of 34 itself is used as bed soil,
It hardly causes any smearing, and it is easy to mix granular ±Fi.
Since there is no possibility of granular soil being present, the lower value of pn is set to approximately 3.0. The amount added to the ±loss of ikS is 0.5 to 41141 for easy mixing! Purpose P
In order to be able to investigate M, the upper limit of the pH is approximately 4.
．． It is better to set it to 5.

Note 1: The pH of the soil in the present invention is determined by adding water (
This value was obtained using a 1 l PH meter (Toa Denpa Kogyo X0 area, PR meter model HM-201) in which PH7.0>100- was added and stirred for 5 minutes to sufficiently disintegrate the granular soil.

When adjusting the pH of bed soil using the granular acidic soil of the present invention as described above, it is possible to adjust the pH of the bed soil without causing damage to the machine, unlike when using fi1# or nitrofluorone soap, which is conventionally used as a PH114a agent. A healthy 5ii brought to rice planting
t- Can be grown.

Real Jllif11 (Jllif 11) Suiwai Itodo II (O
Bo 34.7m/1oot) 10.0~.

The volcanic ash-based Emperor 2.86 ~ of 63.3m/1oot Ruri and genus 1 and 17 electric caps were air-dried and mixed and powdered to a grain size of 100 tones or less by 4Iv+11 minutes. The 010 of this mixed soil was 3 fj:6 me/100 f.

Add polyvinyl alcohol lo, 5fCf &
Add and mix #1052 (approximately 1 ot of mixed soil), and 2.94 oz of water to the combined soil, and use an extrusion granulator to make cylindrical grains (length: 12 kg). ~5m,
The mixture was granulated into particles with a short diameter of 1.0 square meters and dried.

The OpH of this granular soil was 3.8.

Example z (PR am test) Air drying of paddy soil at Fukushima Agricultural Experiment Station ± (pH-6,01
) 100,111 parts by varying the amount of the granular acidic acid of the present invention obtained in J11is1, the pH was 6 as shown in Table 1.

JII1 Table Example 3 Instead of sulfuric acid in Example 1, acetic acid,
p) 13. with citric acid and di) E27nic acid respectively.
7-4. Make granular acidic soil of 0.3.8 M and a! The pH-adjusted progenitor was prepared as a pH-enricher, and a growth test of the inoculum was conducted.The results after 30 days are shown in g2t&. 'In addition, as the original soil, it is true liA.
Fuku Jl1 Prefectural Agricultural Experiment Station water excavation I, same as used in Example 2
jll was used.

Comparative example.

The PH adjustment of the floor dome used in Example 3 was completely destroyed.

ifi nitrofumic acid! In the same manner as in Example 3, the inoculum was grown in a test tube. The results are shown in Table 3.

Summary 3 Table ○: Party sprout SOS or more t>,' I 80 饅禾 111111 Wu Hahua? , Applicant Miya Co., Ltd. Agent 1) Attorney Yutaka Hiro Paste 111n ... Procedural amendment April 3, 1980 Director General of the Patent Office Shima 1) Haruki Tono 1, Indication of case Patent Application No. 44272 of 1982 No. 2
, Title of the invention ±1) Granular acidic soil for H adjustment and its manufacturing method 3, Relationship with the case of the person making the amendment Patent applicant

Claims (1)

[Scope of Claims] (1) Soil pH 1ll, characterized in that it is granular soil made by adding an acidic substance to soil having a base substitution capacity of 20 m·/Roof or more and adjusting it to pi 13.0-4.5.
l Granular acidic soil for preparation. (2) The acidic substance is sulfuric acid, hydrochloric acid, nitric acid, or acetic acid. Claim #I which is citric acid or nitrophic acid
Granular acidic soil as described in item 1. (Phrase Growth WI4IIM 100-500 ppmft
r% range of claims! llijglaX is the granular acidic soil described in Section 2. (Special #f-seeking axis that contains the total amount of the three fertilizer ingredients of 43 electrons, phosphoric acid, and potassium, or the total amount of the two fertilizer ingredients, iIl element, and potassium, that is less than 2 weight rice cake) -Fushimi 3
Granular acidic soil described in any of the following products. (6) - Kikubodo O grain! A granular acidic soil according to any one of Claims 1 to 6, wherein the ratio is 0.2 to 6. (6) For crushed soil with a base substitution capacity of jilom/Zoo f or more, ml! 1. Granular acid for soil-IllI, characterized by uniformly mixing hydrochloric acid, nitric acid, acetic acid, citric acid or nitrophic acid, and a water-soluble polymer, adjusting the pH to 3.0-44, granulating it, and drying it. Soil development method,゛