JPS5876005A - Seeding method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for sowing seeds.

BACKGROUND ART Sowing of vegetable seeds, flower seeds, etc. is a fundamental part of agricultural technology, and many improvements have been made to date.

In sowing operations, it is extremely important to increase the germination rate of seeds and to aim for stable production of agricultural crops. A number of methods are known including coated seeds, seed tape or hormone treatments. Water Fi is an essential factor for rounding, which causes the dildo tube to swell and initiate biochemical reactions for seed germination. Poor germination is often attributed to lack of water during germination.

Recently, super-absorbent polymers have been developed that can absorb several hundred times their own weight in water and retain it.It is said that this material is highly water-absorbing and water-retentive and can be used during tube sowing to avoid poor germination due to lack of water in the seeds. Suggestions have been made.

However, although the above method improves the germination rate of seeds, it cannot promote germination.

The present inventors have conducted intensive studies to solve the above-mentioned drawbacks and have found that the above-mentioned drawbacks can be solved by using seeds that have been germinated in advance, and have arrived at the present invention.

The method of the present invention relates to a seeding method characterized by mixing a hydrogel made of a superabsorbent polymer and germinated seeds and then sowing the mixture.

The superabsorbent polymer electrolyte used in the present invention is physically or chemically crosslinked.

Examples of polymer electrolytes include those containing carboxylic acid groups tV in the molecule. Salts such as sodium, potassium, and ammonium are desirable for growth.

For example, starch/acrylate graft copolymer, styrene-maleic anhydride copolymer salt, polyacrylate copolymer, polyvinyl alcohol/acrylate graft copolymer, vinylester yv/ethylene-based polymer, etc. Saponified products of saturated carboxylic acids or their derivatives, polyvinyl μ-
Co-lv/maleic anhydride reaction mixture, polyvinyl alcohol crosslinked products, etc. can be mentioned.

In particular, saponified copolymers, polyvinyl alcohol/acrylate graft copolymers, and copolymers composed of ethylenically unsaturated μ-bonic acid or its derivatives (Y) in a molar ratio in the following range are used as vinyl ester fi/(X). Super absorbent polymers having hydroxyl groups in their molecules, such as polymers and Popal crosslinked products, have particularly high strength after water absorption and are suitable for use in the present invention.

The shape of the superabsorbent polymer used in the present invention is preferably granular, and can be obtained by coarsely pulverizing a bulk polymer product or by suspension polymerization.

Further, the germinated seeds used in the present invention can be obtained by a commonly used method of soaking in water.

The method of the present invention is characterized by not only improving the germination rate of zero seeds but also promoting germination, resulting in good growth and early harvest. ■In order to germinate in an ideal environment indoors, it depends on the type of seed.Germination problems due to sleep and low temperature 1! Even seeds that have unique properties can be completely avoided.

An example of the seeding method of the present invention will be specifically explained. At first, the super absorbent polymer was made to fully absorb water with Hydro'pyyv? :prepare. Seeds that have been germinated in advance are mixed into the hydrogel at an appropriate ratio.

Next, this is sown in the field and covered with soil if necessary.

Another advantage of the present invention is that since germinated seeds are used, the germination rate is high even when there are variations in quality on the bed or unseasonable weather.
and germination promotion. Furthermore, by adding fertilizer ingredients, various hormones, and pesticides, seed germination will be stabilized, and
It is possible to effectively prevent diseases such as cutworm disease that occurs immediately after germination.

The present invention will be explained in more detail below with reference to Examples, but the present invention is not limited thereto.゛Production Example 1 0.7 mol of vinyl acetate, 5 mol of methyl acrylate lvO, and ethylene glycol to diacrylate as a crosslinking agent)
0.08 mol and 0.02 mol of penzoylbeμ oxide as a polymerization initiator were mixed, and this was used as a dispersion stabilizer to partially saponify Bolihini A/7A/:2-1L/8f and NaC.
The mixture was dispersed in 800°C of water containing 110P Yr and subjected to suspension polymerization at 65°C for 6 hours.

Next, the above copolymer 105' was dispersed in 200 tdO) methanol-μ, 60 dt of a 40% KOIi aqueous solution was added, and the mixture was saponified at 60° C. for 6 hours.

The degree of saponification was about 91 mol%. The obtained water-absorbing polymer has a spherical shape with a diameter of 20 to 200 μm, is insoluble in water, and has a diameter of 5 μm.
It has 50 times more water absorption. The diameter after water absorption is 160~
It was 1600μ.

Production Example 2 1,000 parts of hexane was placed in a polymerization tank and dissolved at 50°C. Polyvinyl alcohol (polymerization degree 1.7) in 155 parts of water
50, degree of saponification 88%), 100 parts of acrylic acid, 66 parts of sodium hydroxide, potassium persulfate O, and an aqueous solution containing BBit dissolved therein were polymerized at 60°C for 8 hours and then at 75°C for 1 hour with stirring. . After polymerization, it was heated to 80℃ for 1
Dry under reduced pressure for 8 hours.

The water absorption rate Fi was 400 times higher. The diameter after water absorption is 200~
It was 800μ.

Example 1 The superabsorbent polymers obtained in Production Examples 1 and 2 were poured into water of about 600 times its own weight to form a hydrogel.

Hydrogen A/Q of various vegetable seeds that have been germinated in advance
Mixed.

This mixing ratio is 15 CC of hydrogel for 50 seeds.
It was adjusted so that The mixture thus obtained -
A strip of about 80 cv was sown on top of the 81-thick Masa soil. Hold a vomiting meeting as usual in a greenhouse at approximately 80°C.
Germination rate and growth were examined 15 days after sowing.

The results obtained are shown in Table 1.

Table 1 Germination rate (4) *Control plot: Sowing by conventional method, without using hydrogel,
No germination treatment was performed.

According to the method of the present invention, since germination treatment is performed, a high germination rate and germination vigor can be obtained, and therefore, it can be seen that the growth performance of the crops is also better than in the control plot.

Claims (4)

[Claims] (1) A sowing method characterized by mixing a hydrogel made of a superabsorbent polymer and germinating seeds and then sowing the mixture. (2) The seeding method according to claim 1, wherein the superabsorbent polymer contains a carboxylic acid group in the molecule. (3) The seeding method according to claim 2, wherein the acid base is sodium acid, potassium potassium, or ammonium carboxylate. (4) Patent II in which the super absorbent polymer contains hydroxyl groups! The sowing method described in section 1 of the range of Kyoto.