JPH02129086A - Organic fertilizer of bark-like matter - Google Patents

Abstract

PURPOSE:To enhance soil-improving effect by bulkiness and prevent nitrogen starvation by fermenting beer cake mixed with granule of specific calcium silicate hydrate. CONSTITUTION:100 pts.wt. solid component of beer cake is mixed with 3-100 pts.wt. granule of calcium silicate hydrate having 0.01-7mm granule diameter and 50-90% void volume and air is mixed into the mixture, then fermented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a tree cortex-like organic fertilizer.

[Prior Art] So-called park compost, which is obtained by fermenting tree bark, is well known.

Park compost is bulky, so when applied to soil,
It has the excellent properties of swelling and softening the soil, increasing water retention and aeration, and as a result, significantly improving the physical properties of the soil.

[Problems to be solved by the invention] However, when trying to produce park compost, the following problems arise.

(1) Bark generally has a high (carbon/nitrogen) ratio of about 100, so it cannot be fermented.In order to naturally turn it into park compost, it is necessary to add nutrients and accumulate it for a long period of about 3 years. be.

(2) Therefore, even if we try to compost in a short period of time by applying some kind of treatment, such as high-temperature treatment, it is possible to decompose the harmful components (tannins, phenols) contained in the bark, but (carbon/nitrogen) The ratio does not decrease much, and as a result, a significant reduction in the composting period cannot be expected.

In addition, in addition to harmful components, park compost contains carbon components that do not completely decompose, so microorganisms involved in decomposing carbon components take in nitrogen from the soil, resulting in a decrease in nitrogen in the soil. There is a problem in that plants are susceptible to nitrogen starvation.

Therefore, an object of the present invention is to provide a bark-like organic fertilizer that is bulky like park compost, has a high soil improvement effect, requires a short fermentation time in the manufacturing process, and does not cause nitrogen starvation.

[Means for Solving the Problems] As a result of intensive research to solve the above-mentioned problems, the present inventors discovered the fact that it is sufficient to use specific raw materials as raw materials for organic fertilizers, and completed the present invention. .

That is, the solid content of beer lees according to the present invention is 100! In the quantity part,
Tree bark-like product obtained by fermenting the beer lees in a state in which 3 to 100 parts by weight, preferably 5 to 50 parts by weight, of powdered calcium silicate hydrate having a porosity of 50 to 90% are mixed. Adopt organic fertilizer composition.

[Function] Like bark, beer lees remains bulky even after fermentation. The result is an organic fertilizer similar to park compost.

In addition, beer lees has a moderately low (carbon/nitrogen) ratio compared to tree bark, and the fermented product obtained therefrom, that is, the organic fertilizer of the present invention, also has a moderate (carbon/nitrogen) ratio compared to the same material. has. Therefore, when the organic fertilizer is applied to soil, nitrogen starvation is less likely to occur.

When beer lees is used alone, the fermentation is inhibited by the organic acids produced and aerobic fermentation is difficult, but fermentation is promoted by the air and components brought in by the calcium silicate powder. As a result, park compost-like organic fertilizer can be produced in a shorter period of time.

[Example] Next, an example embodying the present invention will be described with reference to the drawings.

100 parts by weight of beer lees solids are mixed with various weight proportions of calcium silicate hydrate powder having a porosity of 80% and a particle size of 2 mm or less, and the water content is approximately 60 f! % mixture was obtained.

Air was mixed into these mixtures at a rate of 5% by volume per minute based on the volume, and forced fermentation was carried out for about 8 weeks. During this time, the mixture was stirred approximately every week to ensure uniform fermentation. The characteristics of the obtained organic fertilizer (example product) are shown in the table in comparison with the characteristics of park compost (4th year et al.).

In addition, when the organic fertilizer obtained in this example was applied to soil, the relationship between the amount of organic fertilizer added and properties such as tentative specific gravity and water capacity is shown in Figures 1 and 2. is defined as follows.

Temporary specific gravity is the solid weight of soil per unit volume, and the smaller this value, the more bulky it is.

Water capacity: The weight of water absorbed by soil per unit weight expressed as a percentage; the higher this value, the better the water retention capacity.

Table note: Mixed weight ratio of calcium silicate hydrate powder to 100 parts by weight of solid content of 4-billed lees. Items marked with an "X" are those for which fermentation has not progressed *Displayed on a dry basis.

C, N, and CaO are shown in weight percent based on the solid content of the organic fertilizer in the example.

As is clear from the table and FIGS. 1 and 2, the organic fertilizer obtained in this example expands and softens the soil with the same bulkiness as park compost.

Furthermore, if the amount of calcium silicate hydrate powder or granules is less than 3 parts by weight, fermentation of the beer lees will not be sufficient, and if it exceeds 30 parts by weight, the bulkiness will be reduced.

Furthermore, although the organic fertilizer of the present invention was produced in a short period of about 8 weeks, it exhibits a soil improvement effect comparable to that of a 4-year-old bark pressure enhancer.

The present invention can be implemented in various embodiments without departing from its essence. For example, calcium silicate hydrate powder may have a size of 0.1 mm to 7 mm, preferably 0.5 mm to 7 mm.
A particle size of 5 mm can be used.

[Effects of the Invention] As detailed above, the organic fertilizer according to the present invention is bulky like bark compost and exhibits the excellent effect of not causing nitrogen starvation. Moreover, the organic powder according to the present invention can be obtained in a short period of time.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the relationship between the amount added and tentative specific gravity, and FIG. 2 is a diagram showing the relationship between the amount added and the rate of increase in water capacity. Patent applicant Onoda NLC Co., Ltd. Onoda Aesthetics Co., Ltd. First drawing f' lra tD/・ノ

Claims (1)

[Claims] 1. The porosity is 50 to 100 parts by weight of the solid content of beer lees.
A bark-like organic fertilizer obtained by fermenting the beer lees with a mixture of 90% calcium silicate hydrate powder and granules at a ratio of 3 to 100 parts by weight.