JP2007111036A - Material for raising seedling of plant and its utilization - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material for raising seedlings different from conventionally known materials for raising seedlings in order to widen choices involving materials capable of being used for raising seedlings of plants and utilize it for improvement of quality of plant seedlings and improvement of agricultural work. <P>SOLUTION: The present invention provides: a material for raising plant seedlings containing wood-based compost, in which water-soluble phenol content per gram of oven dry weight of the material is ≤10 μmol and water content is ≤65 w%; a method for raising plant seedlings in which plant seedlings are cultured by using the material for raising plant seedlings; and plant seedlings, etc., obtained by growing plant seeds by using the material for raising plant seedlings. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to plant seedling materials and use thereof.

  In order to help improve the quality of plant seedlings and farm work, various plant seedling materials have been invented and described in several documents (see, for example, Patent Documents 1 to 4).

Japanese Examined Patent Publication No. 62-22571 Japanese Patent Publication No. 7-102037 Japanese Patent Laid-Open No. 2-312522 Japanese Patent Laid-Open No. 2002-300812

  Under such circumstances, it has been conventionally known to expand the options for plant seedling materials that can be used to grow plants, and to help improve the quality of plant seedlings and farm work. It has been desired to develop a material for plant seedling that is different from the material for plant seedling.

As a result of intensive investigations under such circumstances, the present inventors are a plant seedling material made of a specific raw material, and the water-soluble phenol content and water content in the material are adjusted to be within a specific range value. As a result, the present inventors have found that the material for raising plant seedlings is effective for improving the quality of plant seedlings and improving farm work.
That is, the present invention
1. A plant seedling material containing woody compost, wherein the water-soluble phenol content per gram of the dry weight of the material is 10 μmol or less and the water content is 65 fw% or less (hereinafter referred to as this material) Sometimes referred to as invention material.);
2. 2. The plant seedling material according to item 1 above, wherein the woody compost is bark compost or chip compost having a water-soluble phenol content of 10 μmol or less per gram of dry weight;
3. The plant seedling material according to any one of the preceding items 1 to 2, wherein the wood compost is a wood compost obtained by cleaving the wood compost lump so as to cut fibers contained in the wood compost lump. ;
4). 4. The material for plant raising and seedlings according to the preceding items 1 to 3, which has fluidity showing a filling rate of 70% or more. Here, the “filling rate” is the filling with respect to the capacity of each tray hole when filling a vegetable seedling tray with 200 holes (26 mm square x 43 mm height) using an automatic floor earthing machine. It means the average volume ratio (%) in 20 arbitrary tray holes calculated based on the volume ratio (%) of the capacity of the plant seedling material. ;
5. The plant seedling material according to any one of the preceding items 1 to 4, wherein the wood compost is a wood compost having fluidity showing a filling rate of 70% or more. Here, the “filling rate” means that 200 holes (26 mm square × 43 mm high) vegetable seedling trays were filled with respect to the capacity of each tray hole when the woody compost was filled using an automatic floor earthing machine. It means the average volume ratio (%) in any 20 tray holes calculated based on the volume ratio (%) of the capacity of the wood compost. ;
6). The plant seedling material according to any one of 1 to 5 above, wherein an average length of fibers contained in the woody compost is 1 mm to 10 mm;
7). Selected from the group consisting of peat moss, perlite, vermiculite, zeolite, calcined akadama soil, kanuma soil, pumice, hinata soil, coco pate, charcoal, mine, pulp fiber, rock wool, sawdust, water moss, natural soil, natural sand and foamed resin. The plant seedling material according to any one of the preceding items, wherein the plant seedling material contains at least one or more raw materials;
8). The plant nursery material according to any one of 1 to 6 above, which contains at least one raw material selected from the group consisting of peat moss, perlite, and vermiculite;
9. The material for plant raising and seedlings according to 1 to 8 above, which contains a fertilizer component other than woody compost (hereinafter may be referred to as second material of the present invention);
10. The fertilizer component other than the woody compost is a fertilizer component containing a nitrogen element amount of 1 mg to 0.5 g of nitrogen with respect to 1 L of the plant seedling material. Materials;
11. Item 9 above, wherein the fertilizer component other than woody compost is a fertilizer component containing 1 mg to 0.5 g of nitrogen, 1 mg to 2 g of phosphoric acid, and 1 mg to 1 g of potassium with respect to 1 L of plant seedling material. Or the plant nursery material according to 10,
12 A plant seedling method, wherein the plant seedling is cultivated using the material for plant seedling described in 1 to 11 above;
13. Plant seedlings, wherein plant seeds are grown using the material for plant seedlings described in 1 to 11 above;
Etc. are provided.

  According to the present invention, a conventionally known plant for expanding the options related to materials for plant seedling, which can be used for raising plants, and for improving the quality of plant seedlings and improving farm work. It is possible to provide plant seedling materials different from the material for raising seedlings and use thereof.

  The material of the present invention has a low water-soluble phenol content and a controlled water content, so that it does not adversely affect the growth of the plant, especially when it is used as a seed sowing medium for seed seed germination and seedling growth. It is very useful for improving the quality of plant seedlings without obstruction. Moreover, in a preferable aspect among the materials of the present invention, the fluidity is high, and when the container is used by filling a container little by little, such as vegetable seedling using a plastic tray, or when mixed with other plant seedling materials It has the advantage that it passes easily through a sieve without becoming a lump, which is very useful for improving agricultural work.

  Plants that can use the material of the present invention include, for example, Asteraceae crops such as lettuce, burdock, and sunflower, Liliaceae crops such as leek, onion, and leek, Brassicaceae crops such as kanran, Chinese cabbage, and radish, eggplant, tomato, and stand. Eggplants such as eggplant, bell pepper, pepper, and pepper Vegetables such as Cucurbitaceae crops such as Togan, Gramineae crops such as Sweet Corn, Flowers such as Eustoma, Pansy, Begonia, Grass such as Guinea grass and Rosegrass, Grains such as rice, barley and corn, Trees such as Eucalyptus, Edible and industrial crops such as soybeans, peas, legumes, buckwheat, etc., edible millet, etc. It can be mentioned.

  The material of the present invention is a plant seedling material containing woody compost, characterized in that the water-soluble phenol content per gram of the material dry weight is 10 μmol or less and the water content is 65 fw% or less (hereinafter, this feature) ).

The water-soluble phenol content per gram of the dry weight of the material of the present invention is 10 μmol or less and the water content is 65 fw% or less.
Examples of the method for measuring the water-soluble phenol content in the material of the present invention or the woody compost include a normal measurement method such as the Folin-Denis method.
Examples of the method for measuring the moisture content in the material of the present invention include the following methods.
A heat-resistant container having an arbitrary capacity is prepared and its weight is measured (weight a). Next, an arbitrary amount (for example, 50 g) of the material of the present invention is filled in a heat-resistant container and the weight is measured (weight b). Thereafter, the material of the present invention filled in the heat-resistant container is dried for a whole day and night in a drying oven at 105 ° C., and the weight is measured (weight c). In this case, the moisture content in the material of the present invention is obtained by the following calculation formula.
Medium water content (fw%) = (weight b−weight c) ÷ (weight b−weight a) × 100

It is preferable that this invention material has the fluidity | liquidity which shows the filling rate of 70% or more. Here, the “filling rate” is the filling with respect to the capacity of each tray hole when filling a vegetable seedling tray with 200 holes (26 mm square x 43 mm height) using an automatic floor earthing machine. It means the average volume ratio (%) in 20 arbitrary tray holes calculated based on the volume ratio (%) of the capacity of the plant seedling material.
The material according to the present invention having such a filling rate may be prepared using, for example, wood compost obtained by cutting fibers contained in a wood compost lump, as will be described later.

Examples of the woody compost contained in the material of the present invention include bark compost or chip compost. As bark compost, for example, organic soil improvement material (more specifically, according to the quality control standards of the Japan Bark Compost Association, organic matter (dry matter) ) 70% or more, carbon ratio (C / N ratio) 35 or less, CEC (dry matter) 70 me / 100g or more, pH 5.5 to 7.5, total nitrogen (dry matter) 1.2% or more, total phosphoric acid P ₂ O ₅ (dry matter) 0.5% or more and total potassium K ₂ O (dry matter) 0.3% or more can be cited as typical examples.) And the like. Chip compost includes, for example, sawdust, cannabis, and other wood chips generated in the process of processing wood into timber, or wood chips generated in the process of producing chips for papermaking from wood, or street trees. An organic soil improving material obtained by depositing and fermenting pruned waste such as the above. These wooden composts may be any as long as they satisfy the above characteristics (that is, the present characteristics) of the material of the present invention in combination with raw materials other than the wood compost of the material of the present invention. Examples of preferable wood compost include wood compost having a water-soluble phenol content of 10 μmol or less per gram of dry weight.
The wooden compost is preferably a wooden compost obtained by cleaving a commercially available wooden compost lump so that fibers contained in the wooden compost lump are cut. Specifically, for example, a commercially available woody compost mass (for example, 2,000 L) is put into a soil mixing mixer such as “Owaki-type mixer EG-6 type” manufactured by Owaki Kogyo Co., Ltd. (for example, capacity 3000 L). After filling and pulverizing the blade at a blade rotation speed of about 1 to 20 rpm for about 1 to 15 minutes, preferably about 8 to 12 rpm for about 5 to 7 minutes, the fibers contained in the bark compost are cut. It may be prepared by discharging the wood-based compost obtained from the discharge port of the soil mixer.

Moreover, it is preferable that the said wooden compost is a wooden compost which has the fluidity | liquidity which shows the filling rate 70% or more, for example. Here, the “filling rate” means that 200 holes (26 mm square × 43 mm high) vegetable seedling trays were filled with respect to the capacity of each tray hole when the woody compost was filled using an automatic floor earthing machine. It means the average volume ratio (%) in any 20 tray holes calculated based on the volume ratio (%) of the capacity of the wood compost.
Such a wood-based compost is a wood-based compost obtained by cutting fibers contained in a wood-based compost mass as described above, and a material satisfying the filling rate may be selected and used.

The average length of the fibers contained in the woody compost is preferably, for example, 1 mm to 10 mm, and more preferably 2 mm to 9 mm. Here, the “average fiber length” may be measured using, for example, an optical microscope and a microscale. This is a photo of an arbitrary amount of woody compost taken with a microscale under an optical microscope, and the fiber length of about 50-100 bark compost is measured on the photo screen relative to the microscale and the average is calculated. This is a calculation method. Here, “the fiber length of woody compost” refers to the shortest distance from end to end of the woody compost fiber. That is, even if the fiber of the wood-based compost is curved, the distance from the fiber end to the end is represented.
Such wood-based compost is a wood-based compost obtained by cutting fibers contained in the wood-based compost as described above, and a material that satisfies the average length of the fibers may be selected and used.

  Examples of raw materials other than wood compost included in the material of the present invention include, for example, peat moss, perlite, vermiculite, zeolite, calcined akadama soil, kanuma soil, pumice, hinata soil, coco pate, charcoal, slag, pulp fiber, rock wool, sawdust Water moss, natural soil, natural sand, foamed resin and the like. These raw materials may be composed of one kind or plural kinds. For example, commercially available materials may be used as long as the raw materials satisfy the above characteristics (that is, the present characteristics) of the present invention material in combination with the woody compost included in the present material. Good.

  Examples of the mixing ratio of the wood compost included in the material of the present invention and the raw materials other than the wood compost include a volume ratio of 99: 1 to 1:99, and the material of the present invention has. Any material may be used as long as it satisfies the above characteristics (that is, this characteristic).

The material of the present invention may further contain a fertilizer component other than the wooden compost, in addition to the wooden compost and the raw materials other than the wooden compost.
As the fertilizer component, for example, as nitrogen fertilizer, ammonium sulfate, ammonium nitrate, ammonium chloride, sodium nitrate, lime nitrate, urea, corrosive acid fertilizer, isobutyraldehyde processed urea, acetaldehyde processed urea, formaldehyde processed urea, guanyl urea phosphate, As phosphate fertilizer, superphosphate lime, heavy superphosphate lime, molten phosphorus fertilizer, phosphorus humic acid, heavy burnt phosphorus, bitumen superphosphate, potassium fertilizer as potassium sulfate, potassium chloride, potassium sulfate bitter soil, corrosion Examples include potassium acid and potassium silicate. Other than this, ordinary chemical fertilizer, advanced chemical fertilizer, fish residue, meat residue, bone meal, guano, rapeseed oil residue, soybean oil residue, cottonseed oil residue, etc., organic fertilizer, coated nitrogen fertilizer, coated composite fertilizer, etc. Can be mentioned. Preferably, for example, normal chemical fertilizer, advanced chemical fertilizer, coated composite fertilizer and the like can be mentioned.
The fertilizer component is preferably a fertilizer component containing 1 mg to 0.5 g of nitrogen with respect to 1 L of plant seedling material.
Further, the fertilizer component is more preferably a fertilizer component containing 1 mg to 0.5 g, 1 mg to 2 g of phosphoric acid, and 1 mg to 1 g of potassium with respect to 1 L of the plant seedling material.
Furthermore, you may add agricultural chemicals, such as an agrochemical, a plant growth regulator, a pH adjuster, surfactant, etc. to this invention material as needed.

The present invention includes a plant seedling method characterized by cultivating a plant seedling using the plant seedling material described in Item Nos. 1 to 11 in the paragraph [0005] of the present specification.
The cultivation method used may be a normal method in the field of agriculture and horticulture, and may be any method according to the plant to be cultivated.
The present invention also includes a plant seedling obtained by growing a plant seed using the material for plant seedling described in Item Nos. 1 to 11 in the paragraph [0005] of the present specification.
The growth method used may be a normal method in the field of agriculture and horticulture, and may be any method according to the plant to be cultivated.

  Hereinafter, the present invention will be described in more detail with reference to examples such as production examples and test examples, but the present invention is not limited to these examples.

Production Example 1
Bark compost lump (trade name “Maruichi Burke” made by Iyo Timber Co., Ltd.) was filled into a soil mixing device (trade name “Owaki type mixer EG-6 type”, Owaki Kogyo Co., Ltd., capacity 3,000 L) with 2,000 L This was crushed for 5 minutes at a blade rotation speed of 12 rpm, and then the bark compost obtained by cutting the fibers contained in the bark compost (water-soluble phenol content per gram of dry weight: 9.1 μmol, water content: 65 fw % Or less, average length of fiber: 5.6 mm) was discharged from the discharge port of the culture mixer.
1000 L of bark compost thus obtained was refilled in the soil mixer, and further peat moss (trade name “Berger”: moisture content 40 fw%), perlite (trade name “Nenisanso No. 1”, Mitsui Mining Co., Ltd.) Product: Moisture content: 2 fw%), vermiculite (trade name “Showa Vermiculite Standard 2”, Showa Vermiculite Co., Ltd .: Moisture content: 1 fw%) is added in an amount of 500 L each, and these raw materials are mixed until uniform. (In other words, the material of the present invention) was discharged from the discharge port of the culture mixer.
The water-soluble phenol content per gram of the dry weight of the material of the present invention thus obtained was 4.7 μmol and the water content was 65 fw% or less.

Production Example 2
To the material of the present invention obtained in Production Example 1, “Sumika Ace” (manufactured by Sumitomo Chemical Co., Ltd., composition: nitrogen 18.0%, phosphoric acid: 10.0%, potassium: 14.0 as a fertilizer component other than bark compost) %) Is added to and mixed with 1 L of the material so as to contain an amount of nitrogen element of 200 mg on a nitrogen basis, so that the second invention material (in Table 1, “present invention (1 ) ").
The water-soluble phenol content per gram of the dry weight of the second invention material thus obtained was 9.1 μmol and the water content was 65 fw% or less.

Comparative production example 1
Instead of the bark compost used in Production Example 1, three kinds of bark compost prepared by changing the raw material, the ripening period, and the ripening method were used, and the water-soluble phenol content per gram of dry weight was 20.8 μmol. 25.3 μmol, 36.2 μmol, and a comparative material having a water content of 65 fw% or less were obtained according to the same method as described in Production Example 1. To the obtained comparative material, as a fertilizer component other than bark compost, “Sumika Ace” (manufactured by Sumitomo Chemical Co., Ltd., composition: nitrogen 18.0%, phosphoric acid: 10.0%, Kali: 14.0%), A comparative material corresponding to the second material of the present invention was manufactured by adding and mixing so as to contain an amount of nitrogen element of 200 mg with respect to 1 L of material.
The water-soluble phenol content per gram of the dry weight of the comparative material thus obtained was 10.8 μmol (hereinafter referred to as “Comparative material (1)” in Table 1), 13.2 μmol (note that In Table 1, “Comparative material (2)”), 18.8 μmol (In Table 1, “Comparative material (3)”) and its moisture content is 65 fw% or less. there were.

Test Example 1 (Tomato cultivation test)
The plant seedling materials produced in Production Example 2 and Comparative Production Example 1 were filled in a 1 / 5000a pot, and tomato seeds were sown as test plants. And when 25 days passed after sowing, the ground length (cm) of the tomato seedling was measured. The average value was calculated based on the obtained measured value (10-pot repetition). The results are shown in Table 1.

表１から明らかにように、比較資材の場合にはトマト苗の地上部の生育が抑制されたが、本発明の場合にはそのような生育抑制現象は全く認められなかった。

As is clear from Table 1, growth of the above-ground part of the tomato seedling was suppressed in the case of the comparative material, but such growth suppression phenomenon was not recognized at all in the case of the present invention.

Production Example 3
Bark compost lump (trade name “Maruichi Burke” made by Iyo Timber Co., Ltd.) was filled into a soil mixing device (trade name “Owaki type mixer EG-6 type”, Owaki Kogyo Co., Ltd., capacity 3,000 L) with 2,000 L This was crushed at a blade rotation speed of 12 rpm for 5 minutes, and then the bark compost formed by cutting fibers contained in the bark compost (water-soluble phenol content per gram of dry weight: 9.7 μmol, water content: 65 fw % Or less, average length of fiber: 5.2 mm) was discharged from the discharge port of the culture mixer.
1000 L of bark compost thus obtained was refilled in the soil mixer, and further 950 L of peat moss (trade name “Berger”: moisture content 40 fw%), pearlite (trade name “Nenisanso No. 1”) Mitsui Metal Mining Co., Ltd. ) Product: Moisture content 2 fw%) 50 L was added and these raw materials were mixed until uniform, and then the mixture (ie, the material of the present invention) was discharged from the discharge port of the soil mixer.
The water-soluble phenol content per gram of the dry weight of the material of the present invention thus obtained was 9.3 μmol and the water content was 65 fw% or less.

Production Example 4
Using ammonium sulfate, lime superphosphate, and potassium sulfate as fertilizer components other than bark compost in the material of the present invention obtained in Production Example 3, nitrogen 200 mg, phosphoric acid 500 mg, and potassium 500 mg with respect to 1 L of the material A second material of the present invention (hereinafter referred to as “present invention (2)” in Table 2) was produced.
The water-soluble phenol content per gram of the dry weight of the second invention material thus obtained was 9.3 μmol, and the water content was 65 fw% or less.

Comparative production example 2
Instead of the bark compost used in Production Example 3, two kinds of bark compost prepared by changing the raw material, the ripening period and the ripening method were used, and the water-soluble phenol content per 1 g of dry weight was 18.2 μmol. A comparative material having 21.0 μmol and a water content of 65 fw% or less was obtained according to the same method as described in Production Example 3. To the obtained comparative material, ammonium sulfate, lime superphosphate, and potassium sulfate are used as fertilizer components other than bark compost, and added and mixed so as to contain 200 mg of nitrogen, 500 mg of phosphoric acid, and 500 mg of potassium with respect to 1 L of the material. Thus, a comparative material corresponding to the second material of the present invention was manufactured.
The water-soluble phenol content per gram of the dry weight of the comparative material thus obtained was 15.1 μmol (hereinafter referred to as “Comparative material (4)” in Table 2), 19.9 μmol (note that In Table 2, it is described as “Comparative material (5)”) and its water content was 65 fw% or less.

Test example 2 (melon cultivation test)
The plant seedling material produced in Production Example 4 and Comparative Production Example 2 was filled in a 55-hole plastic connection tray, and melon seeds were sown as a test plant. And 30 days after sowing, the ground length (cm) of the melon seedling was measured. The average value was calculated based on the obtained measured value (10-pot repetition). The results are shown in Table 2.

表２から明らかにように、比較資材の場合にはメロン苗の地上部の生育が抑制されたが、本発明の場合にはそのような生育抑制現象は全く認められなかった。

As is clear from Table 2, in the case of the comparative material, the growth of the above-ground part of the melon seedling was suppressed, but in the case of the present invention, such a growth suppression phenomenon was not recognized at all.

Production Example 5
Chip compost lump (trade name “Forest Component” manufactured by Sanyo Chip Industry Co., Ltd.) in a soil mixing machine (trade name “Owaki-type mixer EG-6 type” manufactured by Owaki Industry Co., Ltd., capacity 3,000 L) is 2,000 L. After filling and pulverizing for 5 minutes at a blade rotation speed of 12 rpm, chip compost obtained by cutting fibers contained in the chip compost (water-soluble phenol content per gram of dry weight: 5.3 μmol, water content: 65 fw%, average fiber length: 6.3 mm) was discharged from the discharge port of the culture mixer.
1000 L of chip compost thus obtained was refilled in the soil mixing machine, and further peat moss (trade name “Berger”: moisture content 40 fw%) 500 L, vermiculite (trade name “Showa Vermiculite Standard 2” Showa Vermiculite Co., Ltd. ) Manufactured: water content 1 fw%) 400 L was added and these raw materials were mixed until uniform, and then the mixture (ie, the material of the present invention) was discharged from the discharge port of the soil mixing mixer.
In this way, the material of the present invention was obtained. The water-soluble phenol content per gram of the dry weight of the material was 2.8 μmol, and the water content was 65 fw% or less.

Production Example 6
Using ammonium sulfate, superphosphate lime, and potassium sulfate as fertilizer components other than chip compost, the material of the present invention obtained in Production Example 5 is 200 mg nitrogen, 500 mg phosphoric acid, and 500 mg potassium with respect to 1 L of the material. A second material of the present invention (hereinafter referred to as “present invention (3)” in Table 3) was produced.
The water-soluble phenol content per gram of the dry weight of the second invention material thus obtained was 2.7 μmol and the water content was 65% or less.

Comparative production example 3
Instead of the chip compost used in Production Example 5, two kinds of chip compost prepared by changing the raw material, the aging period, and the ripening method were used, and the water-soluble phenol content per 1 g of dry weight was 18.8 μmol. A comparative material having a content of 24.2 μmol and a water content of 65 fw% or less was obtained according to the same method as described in Production Example 5. To the obtained comparative material, using ammonium sulfate, lime superphosphate, and potassium sulfate as fertilizer components other than chip compost, adding and mixing so as to be 200 mg nitrogen, 500 mg phosphoric acid, 500 mg potassium with respect to 1 L of the material. Thus, a comparative material corresponding to the second material of the present invention was manufactured.
The water-soluble phenol content per gram of dry weight of the comparative material thus obtained was 14.4 μmol (hereinafter referred to as “Comparative material (6)” in Table 3), 20.7 μmol (note that In Table 3, it is referred to as “Comparative material (7)”), and its water content was 65 fw% or less.

Test example 3 (melon cultivation test)
The plant seedling materials produced in Production Example 6 and Comparative Production Example 3 were filled into a 9 cm polypot, and melon seedlings grown on a 128-hole plastic connection tray (25 days after sowing) were transplanted as test plants. And 15 days after transplanting, the ground length (cm) of the melon seedling was measured. The average value was calculated based on the obtained measured value (10-pot repetition). The results are shown in Table 3.

表３から明らかなように、比較資材の場合にはメロン苗の地上部の生育が抑制されたが、本発明の場合にはそのような生育抑制現象は全く認められなかった。

As apparent from Table 3, the growth of the above-ground part of the melon seedling was suppressed in the case of the comparative material, but such a growth suppression phenomenon was not recognized at all in the case of the present invention.

Production Example 7 and Comparative Production Example 4
By appropriately adding water to a bark compost (trade name “Maruichi Burke” manufactured by Iyo Timber Co., Ltd.), bark compost having a moisture content of 55 fw% to 90 fw% every 5% was prepared. The prepared bark compost is filled into a cultivating mixer (trade name “Owaki-type mixer EG-6”, manufactured by Owaki Kogyo Co., Ltd., capacity: 3000 L) and crushed for 5 minutes at a blade rotation speed of 12 rpm. After that, the bark compost obtained by cutting the fiber contained in the bark compost (water-soluble phenol content per gram of dry weight: 4.7 μmol, moisture content: 55, 60, 65, 70, 75, 80, 85, 90 fw%, average fiber length: 4.9 mm) was discharged from the discharge port of the culture mixer.
1000 L of bark compost (first component) obtained in this way was refilled in the above-mentioned soil mixer, and further peat moss (trade name “Berger”: moisture content 40 fw%), perlite (trade name “Nenisanso No. 1” Mitsui). Metal Mining Co., Ltd .: moisture content 2 fw%), vermiculite (trade name “Showa Vermiculite Standard 2” Showa Vermiculite Co., Ltd .: moisture content 1 fw%) are added in an amount of 500 L each, and these raw materials are mixed until uniform. Then, the mixture (that is, the material of the present invention and the comparative material) was discharged from the discharge port of the soil mixing device.
Of the mixture obtained in this way, the bark compost used has a moisture content of 55, 60, 65, 70, 75 fw% per 1 g of the dry weight of the mixture obtained (ie, the material of the present invention). The water-soluble phenol content of this product is 9.1 μmol and its water content is 41 fw% (referred to as “present invention (4)” in Table 4), 46 fw% (referred to as “present in Table 4” Invention (5) ”), 51 fw% (indicated in Table 4“ Invention (6) ”), 55 fw% (in Table 4,“ Invention (7) ”) ), 61 fw% (in Table 4, “Invention (8)”). On the other hand, when the water content of the used bark compost is 80, 85, 90 fw%, the water-soluble phenol content per gram of the dry weight of the mixture obtained (ie, comparative material) is 9.1 μmol and its water content The rate is 67 fw% (referred to as “comparative material (7)” in Table 4), 73 fw% (referred to as “comparative material (8)” in Table 4), 79 fw% (note that In Table 4, it is described as “Comparative material (9)”.)

Test Example 4 (Measurement of filling rate)
72 holes for the plant seedling material produced in Production Example 7 and Comparative Production Example 3 using an automatic floor earthening machine (trade name “Comma Floor Earthing Machine SF-T33” manufactured by Comma Manufacturing Co., Ltd.) (35 mm square x 43 mm high), 128 holes (32 mm square x 43 mm high), 200 holes (26 mm square x 43 mm high) filled with vegetable seedling trays (trade name “Yuprag tray” manufactured by Niizumi Polytech Co., Ltd.) . Thereafter, for any 20 tray holes in each tray, the volume ratio (%) of the capacity of the plant seedling filling material to the capacity of each tray hole was measured. Next, the average volume ratio (%) (that is, the filling rate) in any 20 tray holes was calculated based on the measured volume ratio (%). The results are shown in Table 4.

表４から明らかにように、比較資材の場合には試験に使用されたいずれの野菜育苗用トレイにおいても９０％以上の充填率を得ることができなかったが、本発明の場合には試験に使用されたいずれの野菜育苗用トレイにおいても９０％以上の充填率を得ることができた。

As is clear from Table 4, in the case of the comparative material, it was not possible to obtain a filling rate of 90% or more in any of the vegetable seedling trays used in the test. In any of the vegetable seedling trays used, a filling rate of 90% or more could be obtained.

Reference Example 1 (Measurement of filling rate of bark compost)
Bark compost lump (trade name “Maruichi Burke” made by Iyo Timber Co., Ltd.) was filled into a soil mixing device (trade name “Owaki type mixer EG-6 type”, Owaki Kogyo Co., Ltd., capacity 3,000 L) with 2,000 L This was crushed for 5 minutes at a blade rotation speed of 12 rpm, and then the bark compost formed by cutting fibers contained in the bark compost (water-soluble phenol content per gram of dry weight: 4.7 μmol, water content: 65 fw % Or less, the average length of the fiber: 4.9 mm) was discharged from the discharge port of the culture mixer.
The bark compost produced in this way is used with an automatic floor earthen machine (trade name “Comma floor earthener SF-T33”, manufactured by Comma Manufacturing Co., Ltd.), 72 holes (35 mm square x 43 mm height). , 128 holes (32 mm square × 43 mm high), 200 holes (26 mm square × 43 mm high) vegetable seedling tray (trade name “Yuprag tray” manufactured by Niizumi Polytech Co., Ltd.). Thereafter, for any 20 tray holes in each tray, the volume ratio (%) of the capacity of the filled bark compost to the capacity of each tray hole was measured. Next, the average volume ratio (%) (that is, the filling rate) in any 20 tray holes was calculated based on the measured volume ratio (%). The results are shown in Table 5 (reference example column).
In addition, as a reference comparative example, after filling the bark compost lump into the culture mixer, the same method as above for the bark compost obtained by discharging from the discharge port of the culture mixer as it is without performing the crushing step The filling rate in each tray was investigated. The results are shown in Table 5 (Comparative Reference Example column).

参考比較例では、バーク堆肥塊や長い繊維が野菜育苗用トレイ上でブリッジを組んでしまい、このために低い充填率であった。これに対して参考例では、バーク堆肥塊は解砕工程により、塊がほぐれ繊維長が短くなり、このためにバーク堆肥の流動性が向上し、高い充填率となることが明らかとなった。
またバーク堆肥に代えてチップ堆肥を用いて同様の試験を行えば、バーク堆肥を用いた試験の結果と同等の結果が得られる。

In the reference comparative example, the bark compost and long fibers formed a bridge on the vegetable seedling tray, resulting in a low filling rate. On the other hand, in the reference example, it became clear that the bark compost lump was loosened by the crushing process, and the fiber length was shortened. Therefore, the fluidity of the bark compost was improved and the filling rate was high.
If a similar test is performed using chip compost instead of bark compost, a result equivalent to the test using bark compost can be obtained.

  According to the present invention, a conventionally known plant for expanding the options related to materials for plant seedling, which can be used for raising plants, and for improving the quality of plant seedlings and improving farm work. It is possible to provide plant seedling materials different from the material for raising seedlings and use thereof.

FIG. 1 is a photograph showing the growth state of cultivated melon seedlings after 30 days have passed after filling the material of the present invention into a 55-hole plastic connection tray and seeding melon seeds as test plants on this tray. is there.

Claims (13)

A plant seedling material comprising a woody compost having a water-soluble phenol content of 10 μmol or less and a moisture content of 65 fw% or less per 1 g of the dry weight of the material. 2. The plant nursery material according to claim 1, wherein the wood compost is bark compost or chip compost having a water-soluble phenol content of 10 μmol or less per gram of dry weight. The woody compost is a woody compost obtained by crushing a woody compost lump so as to cut fibers contained in the woody compost lump. Materials. The material for plant seedling raising according to claim 1, wherein the material has fluidity showing a filling rate of 70% or more. Here, the “filling rate” is the filling with respect to the capacity of each tray hole when filling a vegetable seedling tray with 200 holes (26 mm square x 43 mm height) using an automatic floor earthing machine. It means the average volume ratio (%) in 20 arbitrary tray holes calculated based on the volume ratio (%) of the capacity of the plant seedling material. 5. The plant seedling material according to claim 1, wherein the wood compost is a wood compost having fluidity showing a filling rate of 70% or more. Here, the “filling rate” means that 200 holes (26 mm square × 43 mm high) vegetable seedling trays were filled with respect to the capacity of each tray hole when the woody compost was filled using an automatic floor earthing machine. It means the average volume ratio (%) in any 20 tray holes calculated based on the volume ratio (%) of the capacity of the wood compost. 6. The plant seedling material according to claim 1, wherein an average length of fibers contained in the wood compost is 1 mm to 10 mm. Selected from the group consisting of peat moss, perlite, vermiculite, zeolite, calcined akadama soil, kanuma soil, pumice, hinata soil, coco pate, charcoal, mine, pulp fiber, rock wool, sawdust, water moss, natural soil, natural sand and foamed resin. The plant raising material according to claim 1, comprising at least one kind of raw material. The plant seedling material according to claim 1, comprising at least one raw material selected from the group consisting of peat moss, perlite, and vermiculite. The plant seedling material according to claim 1, comprising fertilizer components other than wood compost. The plant raising seedling according to claim 9, wherein the fertilizer component other than the woody compost is a fertilizer component containing an amount of nitrogen element of 1 mg to 0.5 g of nitrogen with respect to 1 L of the plant raising material. Materials. The fertilizer component other than the woody compost is a fertilizer component comprising 1 mg to 0.5 g of nitrogen, 1 mg to 2 g of phosphoric acid, and 1 mg to 1 g of potassium with respect to 1 L of plant seedling material. The plant seedling material according to 9 or 10. A plant seedling method, comprising cultivating a plant seedling using the plant seedling material according to any one of claims 1 to 11. A plant seedling obtained by growing a plant seed using the plant seedling material according to claim 1.

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