TW464470B - Culture soil for cultivating seedings - Google Patents

Abstract

A culture soil for cultivating seedlings is formed by agitation mixing and heat forming of chaff and kernel-husk fibers. The kernel-husk fibers are made from kernels and husks. The husks have a lower softening temperature than the kernels. The culture soil for cultivating seedlings includes 1.7x10<SP>-1</SP> to 2.0x10<SP>-1</SP> g/cm<SP>3</SP> of the chaff and 2.0x10<SP>-3</SP> to 8.2x10<SP>-3</SP> g/cm<SP>3</SP> of the kernel-husk fibers. The culture soil for cultivating seedlings preferably includes 2.0x10<SP>-4</SP>- 4.0x10<SP>-4</SP> g/cm<SP>3</SP> of a fertilizer that includes at least nitrogen. Thus, a cheap and mass-produceable culture soil for cultivating seedlings is produced. Moreover, the culture soil for cultivating seedlings is easy to handle because it does not break or crumble.

Description

464470 A7 B7 V. Description of the invention (The present invention relates to a seedling cultivation soil, which is used to raise seedlings of rice and other crops. In recent years, 'some people have used seed beds to cultivate seedlings of rice and other crops, and then this bed of beds Generally, soil is used to cultivate soil. However, if these cultivated soils use good (homogeneous) bed soil, in addition to high compensability, it is difficult to obtain, and they are heavy and difficult to handle. Therefore, bed soil (breed soil) is used instead. Proposals for soil cultivation are described in Japanese Patent Publication No. 56-18165. The soil cultivation system shown in the aforementioned publication uses a hydrophilic urethane prepolymer as a binding agent and uses plant material for soil cultivation (bark, wood pulp, sawn, etc.). Bark compost made by composting, etc.) is consolidated and dried; in addition, polyvinyl alcohol or splash powder may be used as the binding agent. This kind of soil can use so-called industrial waste such as bark or wood paper as the soil. And effective utilization of plant materials, and the plant-based soil-cultivating material itself is relatively cheap. However, the conventional soil-cultivating material as described above still has the following disadvantages, that is, the combination of soil-cultivating material It takes a long time (for example, 1 to 3 hours) to use the binder to consolidate and dry. 'Mass production is difficult, which results in increased costs. In addition, the completion of the soil cultivation (that is, the soil cultivation material made from the binder consolidation and drying) although It is hard, but easy to break and notch, so the shape is easy to collapse during handling, which is very troublesome to handle; on the other hand, when it is actually used, if it is used for cultivating seedlings in the aforementioned soil cultivation and irrigation, the Cultivating soil will be easier to disintegrate than before irrigation. In this way, 'even if you want to use an automatic planting machine to transplant seedlings and place them on the seedling platform, the hook claws on the device will not be able to hold the seedlings firmly and it will be difficult to proceed smoothly. In addition, although the soil-cultivating material used in the conventional soil-cultivating material itself is relatively cheap, the binding agent such as hydrophilic uratan prepolymer is applicable to the Chinese national standard (CNS) A4 specification (2) 0X 297 mm. ) &Lt; Jing first read the notes on the back before filling out this page &gt; Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ---- l · ------------.----- ------------------ 4 Ministry of Economic Affairs Bureau Ρ, consumer cooperation thorium ENGINEERING &quot; means ί 0, description of the invention (2)

It is very expensive. Therefore, the price is still high as a whole. That is, the purpose of the present invention is to overcome the problems described above, and to provide convenience and suitable for mass production. It is not easy to crack, collapse, and easy to handle. Soil for seedling cultivation. The fertilizing soil f system for seedling breeding of the present invention is made by mixing a rice husk and core with a core-sheath fiber formed by a sheath having a softening temperature lower than that of the G, and then heating and forming it, wherein the rice husk is per cubic centimeter. It contains 17 X ~ 2 〇x 丨 〇g ', and the core-sheath fiber system contains 2 〇X 丨 〇-.3 to 8.2 X l0-3g per cubic centimeter = in the seedling cultivation soil of the present invention After being stirred and mixed with the rice hull, the core-sheath fiber formed by the core part and the sheath part will form a complex and fine mesh and intersect with the rice hull, and the rice husk will be trapped therein. Heating and forming in this state will form a kind of soil that is strong, flexible, and water-retaining like a sponge. Furthermore, in the cultivation soil for seedling cultivation of the present invention, the rice itself is extremely cheap as the cultivation ground material (furthermore, the so-called industrial waste can be more effectively used as the cultivation ground material), and the binding material is also used. Inexpensive core-shaped fiber, so the overall price can be greatly reduced. ^ The seedling cultivation soil of the present invention preferably further contains at least gas fertilizer, and its Φ gas element component should preferably contain 2.0 y 1〇-4 '4.0 X ιο4 per cubic centimeter. The seedling cultivation soil of the present invention The concentration of argon ions is based on pH 3 to 5.5, and each citric acid of the same temple contains 1 · ϋ X 1 ϋ. 3 ~ 3.5 X 1 〇, and citric acid. Cubic centimeter 8.〇L; xi (T4g surfactant is suitable. Titanium leasing Shi Gu detailed description is as follows first brief description attached drawings I ^ · I ί-^ ---- ^ ----- ---- (Please read the precautions on the back before filling in this page> ^ ix:> Α7

46 44 7 Ο V. Description of the invention (3) Brief description of the diagram. Figure 1 is an oblique view of the appearance of a poor application of seedling cultivation in the present invention i Figure 2 is an embodiment of the application of seedling cultivation in the present invention under heating Part of the simplified model of the state of the core-sheath weaving dimension after forming; Figure 3 is an oblique view of the heating forming step of the embodiment of the seedling cultivation soil of the present invention; Figures 4A 囷 and 4B are seedlings of the present invention Section 5 of the heating forming step using the cultivation method 1; Figure 5 is an oblique view of another example of the heating forming step of the cultivation method for seedling cultivation according to the present invention; Figure 6 is an embodiment of the cultivation method for the seedling cultivation according to the present invention. A side view of another example of the heating forming step; and FIG. 7 is a cross-sectional view of an embodiment of the soil-cultivating seedling cultivation method of the present invention in use. According to the above drawings, FIG. 1 is a perspective view showing the appearance of the seedling-cultivating soil 10 according to an embodiment of the present invention. The cultivation soil 10 for raising seedlings shown in FIG. 1 is constituted by using rice husk 2 as a cultivation soil base material, and using a core-sheath fiber elephant 14 as a binding material, which contains a plurality of fertilizers 16 for raising seedlings. In this embodiment, for example, it is formed in a sheet shape (2436 cm3) with a length of 28 cm, a width of 58 cm, and a thickness of 1.5 cm, which can be placed in a nursery box. The rice husk 12 contains 414 to 487 g in dry weight (contains 1.7X 10 "to 2.0 X 10 cm per cubic centimeter in cultivation soil 10 for seedlings) 1 core sheath fiber 14 contains 4.9 to 20.0 g in dry weight (seedling The paper is suitable for the use of paper 10. The Chinese national standard (CNS) A4 rule 7 grid (210 X 297 mm) Γ 6----- (Please read the precautions on the back before filling this page) Ministry of Economy Printed by the Intellectual Property Bureau's Consumer Cooperatives n n. Hi 1 n I Λ-ϋ n i_i 1 nn. ^ 1 I— dn 1 I n. A7 B7 The consumer cooperation of the Intellectual Property Bureau staff has been changed. Description of the invention (4 per cubic centimeter contains 2.0 X 10-3 to 8.2 X i0-y. If the amount of rice cultivating seedlings 10 and rice husk 12 is too small, large hole defects will occur, and When the amount of rice husk 12 is too large, it will swell after forming, and it will be difficult to form it into a predetermined size. If the amount of core-type fiber 14 contained in seedling cultivation soil 10 is too small, it will be combined with rice husk 12 as a binding material. The function will be insufficient to maintain the shape of seedling cultivation soil 10, and when the amount of core-sheath fiber U is too large, the shape of seedling cultivation soil 10 will be too small. It makes it difficult for the roots of the seedlings to enter the cultivation soil and hinder the growth of the seedlings. If the contents of the rice husk 12 and the core-oriented fiber M are in the aforementioned range g, the soil will have excellent formability and easy handling. At the same time, the growth of seedlings will be very good. Moreover, the content of rice husk 12 is 440 ~ 460g (contained per cubic centimeter in seedling cultivation soil 10) ^ 〇- 丨 ~ 1.9 &gt; &lt; 1〇.] §) as The content of the core-shaped fiber 14 is preferably (4 m0_3 to 4.9 X l (T3g) per cubic centimeter in the cultivation soil 10 for seedling cultivation. As the cultivation soil 10 for the seedling cultivation, the rice husk 12 and Corele.type fiber} 4 can be prepared by mixing and heating at a certain temperature, so the manufacturing time (with rice husk as the soil substrate and core-sheath fiber as the binding material) need not be too long. X. Because the seedlings are used for seedling cultivation, the core-sheath type fibers form a delicate Lai 1 and are purely entangled with a sponge-like structure. It is rich in flexibility and water-retaining for ten years, so it is not easy to be broken or broken. The shape does not collapse in the shape of the 'easy to handle H when practical use M is placed in the automatic planting machine For seedling insertion, you can also use the claws of the device to firmly grasp the seedlings. The seedling insertion is successfully carried out, and the young woman—m ^ from Fang and Yuetian uses soil cultivation as the ear of the soil cultivation substrate 3 Bing He Lian 丨; Jia 丨 Stone. A ~ From obsessive compliance, $ can effectively use the so-called production

.'V ------------- * 装 --- (Please read the notes on the back before filling out this page)---- line. 464470 A7 B7 Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printed 5. Description of the invention (industrial waste is used as the substrate for cultivating soil), and the core-sheath fiber used as the binding material is also very cheap, so the overall price can be greatly reduced. Generally, rice husks contain a considerable amount of water, and rice husks containing water can also be used in seedling cultivation soil 10. In this case, the content of rice husks is adjusted to the above range based on the dry weight, such as using water For rice husks with a content of 13%, rice husks can use 476 ~ 560g. The core-shaped fiber 14 is composed of a core portion and a softened portion having a softening temperature lower than that of the core portion. 'The core-sheath fiber 14 can be made of, for example, a core-sheath polyester (manufactured by Unigeco). It softens at 110 ° C and the core softens at 250 ° C. Also, as the "core-sheath fiber 14, Vernon (trade name; manufactured by Showa Polymer Co., Ltd.)" can be used at this time to soften the sheath at 90 ° C and the core to 115. (: Softening) Figure 2 shows a schematic diagram of a sheath fiber composed of a core portion μα and a sheath portion 14B after thermoforming. When seedlings are raised by using seedling cultivation soil 10 'When using a core-sheath polymer When the ester (made by Unijico) is used as the core weighing thread dimension 14, the core-sheath polyester will be hydrolyzed and decomposed in a long time in a trapped field. In addition, if Vernon (trade name; Showa High) is used, (Produced by Molecular Co., Ltd.) At the time, "Wiluomin" will be biodegraded, but it will be decomposed in the field for a long period of time. The reason for this is that it will not have other adverse effects. Fertilizers for seedlings 16, generally speaking, are mixed with a variety of Fertilizers containing at least three elements of gas, saucer, and bell can be used. The appropriate content of fertilizer 16 for seedling cultivation 10 for seedling cultivation depends on the type of fertilizer used, but the nitrogen content in fertilizer 16 for moonfield should be adjusted. 〇5 ～ 10g (per cubic centimeter in nursery soil 10 contains 2.0x10.4, 4 ～ 4 〇x10. 4g), and 〇7 ～ 卜 paper rule ^ Zhongguanjia standard (CNS) A4 Specifications ⑵ο X 297 mm (Please read the precautions on the back before Write this page) ί 11 l · I- I I --- I I I I - I.

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〇 ^ 8g is particularly preferred. If the content of gas element in Pei 1 () is not satisfied, the leaf color will become yellowish, and the growth of the seedling will tend to deteriorate. When the content of gas element is higher than l_Og, the growth of the seedling root will tend to slow down. The qifansu in cultivation soil for seedling cultivation is about ㈣. 5g for sucklings, 2g for seedlings, and 2g for medium seedlings. In contrast, the cultivation of the present invention can be suitable for any kind of seedlings. It is a peculiar property to use the aforementioned range. In addition, although the content of halogen is expressed in "g", in fact, the value is based on the amount of nitrogen-containing compound (xg) as a fertilizer component and the proportion of nitrogen in the molecular weight of the compound (a) 'according to xgXaXlO- Equation 2 can be calculated. When the nitrogen-containing compound in the fertilizer contains two or more kinds, the sum of the above formulas is shown. Fertilizers for seedling growth 16 can use fertilizers for medium-term breeding (for example, those with the trademark Long M] 〇〇). Good quality soil bacteria breeding agents (such as zeomo), fertilizers for initial breeding (such as phosphorus sulfide), and healthy seedlings. Agents (such as those with the trademark FTE) 3 Among them, a fertilizer mixed with ammonium thiosulfate, potassium gasification, and first ammonium phosphate is preferred, especially nitrogen: phosphorus: potassium is formulated into 14:14:13 (weight ratio). good. If a fertilizer with nitrogen in this proportion is used, it is suitable to raise soil for seedling cultivation]. About 7 g of this fertilizer for seedling cultivation is added. Fertilizer 16 can be mixed with the soil-cultivating base material in any state, and it is better to dissolve various components such as ammonium thiosulfate in water, and then use its solution. It should be used as fertilizer after removing impurities (water-insoluble substances) in the solution: In this embodiment, since the composition of nursery soil 1 () contains fertilizer for nursery, there is no need to use other fertilizers in nursery , And. If the type of bamboo that can be% π 埒 g 芡 weather (climate), it is appropriate to change the aforementioned education -------------- equipment ---- (Please read the back of the first Note this page, please fill in this page again) Order · • Line.; G &amp; ι! · ^ Β;! Ip:; Using the types and mixing ratios of the fertilizers 16 to prepare various kinds of seedling cultivation soil 10, the scope of application will be greatly expanded. The pH of nursery soil 10 should be adjusted between 3 ~ 5.5. In the past, the pH of nursery soil 10 was the best. However, if the pH of nursery soil 10 is between 3 ~ 5.5, it will have the characteristics to make the growth of nursery soil better. . If citric acid is added to the cultivation soil 10 for seedling cultivation, the pH of the cultivation soil can be easily adjusted outside the aforementioned range, and the germination inhibiting substances present in the seeds of the cultivation soil 10 can be removed, which can promote germination, which is very beneficial = 'In addition to its function as a soil improvement accelerator', citric acid can also function as a germination inhibitor removing agent. When you want to adjust the pH of Pei Tu 10 to the aforementioned range, it is advisable to add citric acid 24 to 3.7 g (per cubic meter of Pei Tu 10 contains ^ 〆 丨 0-3 ～ 丨 5xl0-3g). When the content of citric acid is When the content is less than 2.4 g, there is a tendency that the germination is suppressed by the germination-inhibiting substance present in the seed. In addition, if the content of citric acid exceeds 3.7g, the pH of soil cultivation will be lower than 3 and hinder the growth of seedlings. The pH of the soil can be measured using a soil pH meter. If the soil-cultivating soil 10 contains a surfactant, it will increase the water permeability of the soil 10, which is very advantageous, especially the content of the surface-active agent in the soil is 0.2 ~ 0.4g (per soil in soil 10). In cubic centimeter XI (T4g), not only the growth of the seedlings is not inhibited, but also the leaching properties are improved, which is ideal. The surfactant used is preferably an anionic surfactant. For example, dodecyl can be used. Sodium besylate, etc., especially Kao's "Niobelics" (trade name; made by Kao). The following is an example to explain the procedure for making seedling cultivation soil 10. The rice husk 12 and core-sheath fiber 14 are mixed first And the aforementioned various seedlings (please read the precautions on the back before filling this page) il · --- order --------- line!: --------------- --------

Λ7 B: Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (s Fertilizer 16. The core-sheath fiber η will be complicated and detailed because it is mixed with rice husk 2 and fertilizer 16 for various seedlings. The net, intersects with rice husk ^ and various fertilizers 16 for seedling breeding, and packs rice husks! 2 and various fertilizers for seedling breeding 16, including citric acid and / or interfacial activity in the fertilizer 10 for seedling breeding. It is suitable to mix citric acid and / or surfactant with rice husk 12 in this step. For example, after dissolving citric acid and fertilizer in water, spray the resulting solution while spraying rice. The shell Η, the core-sheath fiber M and the surfactant are stirred and mixed. Then, the rice husks which are stirred and mixed, the core-sheath fiber, and the fertilizer for seedlings are heated and formed. The forming should be performed on the core-sheath fiber. The sheath part i4B of 14 is softened and the core Ma cannot be softened. For example, when core-core polyester (manufactured by Unijico) is used as the core-sheath fiber 14, the sheath part 4b can be softened below the core. 14A can be softened at 25QC, so 12 After mixing with the core-sheath polyester, it is suitable to heat-mold between i30qc ~ 200dc (especially around 14 ° C). In addition, if the core-sheath fiber 丨 4 series uses Veronox ( (Trade name; manufactured by Showa High Polymer Co., Ltd.), since a part of MB can be softened in step C, and core 14A can be softened in U5 "c ^, it is suitable to heat-mold at 100 ° C after stirring and mixing the aforementioned Vernox. When the sheath portion UB can be softened and the core portion 14A cannot be softened under heating and forming, the sheath portions 14B of the core-sheath fiber will be softened and fused with each other to form a net shape and the shape 1 is combined with the rice effect: When heating and forming in the aforementioned temperature range ... Because the core MA is not softened, the texture will be firm and a soil with flexibility and water retention will be formed. After mixing and searching ------------ -------- ^ (Please read the precautions on the back before filling this page) I] 464470 A7 __________B7 _ V. Description of the invention (9) Rice husk 12, core-sheath fiber 14 and fertilizer 16 for seedling cultivation During heat forming, as shown in FIG. 3, a pair of forming dies and male forming dies 22 are formed by a heating element, thereby forming the female. 20 and male forming die 22 can be pressed to form a sheet of 28 cm in length, 58 cm in width, and 1.5 cm in thickness. At this time, the degree of pressure should be as shown in Figure 4A. The raw material G (rice hull 12, rice husk 12, The core-sheath fiber 14 and the fertilizer 16 for seedling raising have a thickness of 3 cm, and the thickness after the pressing as shown in FIG. 4B is about 1.5 cm. Also, as shown in the fifth circle, it can also be used during thermoforming. For the large-sized carving mold 24 and the male mold 26, the raw material G after the aforementioned mixing and mixing is pressed into a sheet shape, and then cut into a predetermined size. Alternatively, it can also be used as shown in Fig. 6 (a). Press rolls 28, 30 '32, that is, while continuously feeding the raw material G after mixing, while heating and pressing' continuous forming 'with press rolls 28, 30' 32, and then cut to a predetermined size with a cutter 34, Finish production. Also, at this time, the heating method may use the pressing rollers 28, 30, 32 themselves as heating rollers to perform heating and pressure at the same time, or may use hot air from the air supply port 36 to perform heating. When using seedling cultivation soil 10, as shown in Figure 7, the seedling cultivation soil 10 is spread in the seedling box 40, and then the seedlings of crops such as rice 42 are spread. Covering soil 44 is applied, and irrigation is performed daily and temperature management is performed to carry out seedling cultivation. EXAMPLES The following examples illustrate the present invention in detail, but it should be understood that the present invention is not limited to the following examples. 12 This paper size applies to Chinese national materials _S) A4 specifications ⑽χ 297 public love) A7 B7 5l8g 9.8g 7g 3_ lg V. Description of the invention (10) Example 1 [Manufacture of soil for seedling cultivation] Rice husk (water content 13 %) Core-sheath polyester (manufactured by Unijico) Fertilizer (Fertilizer of ammonium sulfate, potassium gasification, and first ammonium phosphate to be 氤: phosphorus: potassium = 14:14:13 fertilizer) citric acid surfactant [ "Niobelix" (trade name: made by Kao)] 〇3g The above ingredients are stirred and mixed to obtain the raw material for cultivating soil. The fertilizer was dissolved (7,7% by weight) in water, and the insoluble matter was removed before use. Also, citric acid was dissolved in water (6.4% by weight). 1) 1 ^ of this solution is 2 j. Secondly, as shown in FIG. 3, a pair of female forming die 20 and male forming die 21 composed of a heating body are pressed and formed at a forming temperature of ι65γ to form a seat of 28 cm in length, 58 cm in width, and 1.5 cm in thickness. Flakes (2436 cubic centimeters). The pressing conditions were reduced from 3 cm of the thickness of the aforementioned soil-cultivating material before pressing to 5 cm after pressing. The value of 5 was measured after measuring the ρ of soil-cultivating soil 10 with a pH measuring device using soil pH. Comparative Example 1 [Manufacturing of cultivating soil for seedling cultivation] Except that the amount of rice husks was changed to 47〇§, the other conditions were the same as in the examples! Baise for raising seedlings after forming 10%-Comparative Example 2 [Manufacture of soil for raising seedlings] -------------- Packing ----- r --- Order ----- ---- Line fqi first read the note on the back and then fill out the Ministry of Economic Affairs and Intellectual Property Bureau of the Ministry of Industry and Consumer Cooperation.

464470

V. Description of the invention (11) Except that the amount of rice husks is changed to 570g, the other conditions are the same as those in Example i, and they are made into soil for seedling cultivation after forming. Comparative Example 3 Except that the blending amount of the core-sheath polyester was changed to 4_0g, the other conditions were the same as those of Example 1 ', and the soil was cultivated for seedling cultivation. Comparative Example 4 The conditions were the same as those of Example 1 except that the blending amount of the core-sheath polyester was changed to 21.0 g, and the soil was cultivated for seedling cultivation after forming. Comparing Example 1 and Comparative Example 1 with seedling cultivation soil, as a result, in Comparative Example 1, there is a hole having a size of about 2 to 4 square centimeters approximately every 50 square centimeters, and in Example 1, There are no holes in the finish, and the productivity is good. In addition, the seedling-cultivating soil of Comparative Example 2 was swollen after being released after forming, and the seedling-cultivating soil of Example 1 was observed to have no swelling. Based on this evidence, it can be seen that it has excellent dimensional stability. The soil for raising seedlings of Comparative Example 3 was lifted after release, and if water was supplied, a part of the shape of the mat would immediately disintegrate. In contrast, Example 1 did not have any disorder in shape, and was proved to be excellent Shape stability. Furthermore, SASANISHIKI (a rice seed) seedling was grown using the soil for seedling cultivation of Comparative Example 4, and as a result, it failed to grow robustly. On the other hand, when the soil for seedling cultivation of Example 1 was used, the seedlings grew normally. According to observations, the soil for seedling cultivation of Comparative Example 4 was too hard, the roots of the seedlings could not be drilled, and rooting occurred, which hindered the growth of the song. Also, in Example 1, a citric acid-free seedling cultivation soil was prepared in the same way, and this seedling cultivation soil was used to cultivate SASANISHIKI (Please read the precautions on the back before filling this page} Employees of the Ministry of Economic Affairs and Intellectual Property Consumption cooperation Du printed paper is again applicable to China National Standard (CNS) A4 (210 x 297 mm): 14-1 n I n ϋ- * T- «JI n tt-I-n II-in-nf -1 1 n ϋ k— Εκ ϋ. A7 B7 V. Description of the invention (12) Seeds, it was found that about 50% of the seeds had obstacles to germination, and the germinated seeds could not grow into sound ones in the soil. As mentioned above, the seedling cultivation soil of the present invention is not only cheap and suitable for mass production. Furthermore, it is not easy to crack, collapse, and easy to handle, and the effect is excellent. Element reference control 10 ... seedling cultivation soil 12 ... rice husk 14 ... core Sheath fiber 16 ... Fertilizer 14A ... Core 14B ... Shell 24 ... Female forming die 26 ... Male forming die 28,30,32 ... Roller 36 ... Air outlet 40 ... Seedling box 42 ... Seedling 44 ... ---------- t----- Γ --- Order --------- &lt; Please read the notes on the back first Write this page) Ministry of Economic Affairs Intellectual Property Office _ labor costs Zhen agricultural cooperation along the plate a phase: -

Claims (1)

464470 A8 B8 CS D8-—___----— 6. Scope of Patent Application 1 · A seedling cultivation soil, which is a core-sheath type formed by combining rice husk and core with a softening temperature lower than the core Weaving and weaving, and then heating and forming; wherein the rice husk system contains 17 χ 〇_ [~ 2 · 〇χΐ〇- ^ per cubic centimeter, and the core-sheath fiber system contains 2.0 X per cubic centimeter 10-3 ~ 8-2 X 10-3g. 2. If the cultivation soil for seedling cultivation according to item 1 of the patent application scope, the cultivation soil also contains at least nitrogen fertilizer, wherein nitrogen per cubic centimeter contains 2_〇X 1〇_4 ~ 4.0 X 10.4g 〇3 · If applied The cultivation soil for seedling cultivation of item 1 of the patent scope, the cultivation soil has an argon ion concentration pH of 3 ~ 5.5, and also contains 10X 1 · 3 ~ 1.5X 10-3 g of citric acid per cubic centimeter. 4. If the cultivation soil for seedling cultivation according to item 丨 of the patent application scope, the cultivation soil does not contain 8.0 X 10-5 to i.7 X 10.4g of surfactant per cubic centimeter ------------ -&amp;, -II (Please read the precautions on the back before filling out this page} -Line · Economy and Intellectual Property Bureau Employees' Cooperatives Printed on this paper The size of the paper applies to the Chinese National Standard (CNS) A4 (210 x 297 mm) ) 16