JPS5876030A - Covering material for culturing cucumber, watermelon, melon or strawberry - 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 This invention relates to a coating material that suppresses the outbreak of melon in the cultivation of cucumber, watermelon, melon, and strawberry.

Conventionally, if the Oi1 degree in the greenhouse is too high, cucumber cultivation will suffer from downy mildew, gray mold, bacterial spot, gall blight, sclerotium, etc., watermelon cultivation will suffer from carbonaceous blight, vine blight, etc., and melon cultivation will suffer from downy mildew, etc. Strawberry cultivation is prone to pests and diseases such as Botrytis blight, Gutumonia spp. It has had a big impact on the harvest.

As a result of intensive research using this 8WiY, the present inventors found that when a non-ionic drip-proofing agent and a fluorine-based surfactant are added to vinyl chloride resin and used as a wood covering material tf, the OI inside the house is 1.
It was found that the amount of water that condenses and adheres to crops decreases. Using this coating material, the above-mentioned cucumber,
When watermelons, melons, and strawberries were cultivated, the occurrence of pests and diseases on the above-mentioned cucumbers, watermelons, melons, and strawberries was extremely suppressed.

That is, the present coating material for cultivating cucumbers, watermelons, melons, and locusts contains at least 15 parts by weight of a nonionic drip-proof agent and a fluorine surfactant α01 to 100 parts by weight of a vinyl chloride resin. It is made by adding part.

Vinyl chloride resins that can be used in the present invention include polyvinyl chloride, copolymers of vinyl chloride and other monomers such as ethylene, vinyl acetate, vinyl ether, maleic acid ester, etc. It also includes blends of other polymers. vinyl chloride wood
For K, in order to maintain appropriate fKj1 curvature and extensibility,
Usually, well-known lubricants can be added, and if required, lubricants used for overcurrent, stabilizing agents, ultraviolet *a absorbers, and oxidation inhibitors can be added to vinyl chloride *11. agents, pigments, inorganic substances, antistatic agents, etc. - Nonionic surfactants used in #JK4N of this invention include those made of ethers such as polyoxyethylene alkyl ether, polyoxyethylene alkylaryl ether, polyoxyethylene polyoxypropylene ether, (2) Polyoxyethylene alkyl ester, polyhydric alcohol-# and ml [01i] 4 of esters such as esterified products, (C) amino ether type products such as polyoxyethylene alkyladenone% (b) polyoxyethylene These include ether esters such as sorbitan fatty acid ester, polyoxyethylene norbisyl fatty acid ester, polyoxyethylene glyceryl fatty acid ester, polyoxyethylene globylene glycol monofatty acid ester, etc. These nonionic surfactants The selection of the agent can basically be made at the discretion of the company, but it is preferable that the agent has all the performance characteristics such as IIL property, heat resistance, transparency, etc. in addition to maintaining drip-proof property, and has performance as an agricultural covering material. Examples of suitable nonionic surfactants for obtaining a performance of 0 or more that fully satisfies the following are: (1) sorbitol, flubitol, mannitan, mannitol, glycerin, diglycerin-based polyhydric alcohol; , Partial ester of fatty acid having 12 to 22 carbon atoms -) The number of moles of ethylene oxide or propylene oxide added is 1 to 20, the polyhydric alcohol is sorbitan, sorbitol, mannitan, glycerin, diglyceride/, and the fatty acid has 0 vertical atoms. A mixture of polyoxyalkylene polyhydric alcohol fatty acid ester (5) (1) and (2) having a number of 12 to 22 is exemplified.

These nonionic surfactants are vinyl chloride resin 10
0 parts by weight, at least a5 parts by weight, preferably 1L<at
Add at o-ao weight IB01111.

If the amount added is less than 15 parts by weight, a sufficient drip-proof effect cannot be obtained, and if it is more than 50 parts by weight, there will be a lot of bleeding, whitening will occur due to water absorption, and transparency will decrease, which is not preferable.

Next, in the present invention, the fluorine-based surfactant added together with the nonionic surfactant is a fluorine-based surfactant having fluorine atoms in its molecular structure, and is a typical surfactant. otJaL is shown below.

←) Nonionic Rf OmI Rf (ORu)m 01i Rf (OmI Seal)! 1oii Rt (01im)n (ORm)@onRf(OII
m) B 0OOi[ RfB(ORI)m 0H 14BN (R') (0*Ha O)n H(Tsukasa Anionic Rf Coo M Rf BM(R')OH 000M Rf BM ←R QIH40SOsM e RfBNH(OsH4 ) N (c!!s)s I(a
Bisexual e Rf BMTI (C@ll4) M (R') Tomi C Snow H
aCo.

Rf: A fluorinated aliphatic group or a fluorinated aromatic group having a vertical prime number of 1 to 20. The aliphatic group may be linear, branched, or cyclic.

! t1: Ethylene or propylene group B: 2# linking group (e.g. -60-1-C Kano etc.) R': Hydrogen atom or alkyl group having 1 to 20 carbon atoms M: Hydrogen atom or alkali metal mIn: 1 Integer number of ~50 The amount of fluorine surfactant added is 100% of the vinyl chloride resin.
Parts by weight, 101 to parts by weight, preferably Fi(L
It is desirable to add 05 to 15 parts by weight.If it is less than 1 part by weight, no effect will be observed, and if it is added in more than 0 parts by weight, heating will cause discoloration, which is not preferable.

The coating material for cultivating cucurbits, watermelons, melons, and locusts of the present invention can be manufactured into a desired shape by an extrusion method during calendering or the like. Other 04rl as needed! It may also be used by laminating it on a resin film or sheet.

Since the covering equipment for cultivating watermelons, melons, and strawberries of the present invention is constructed as described above, the covering material t
The O81 degree inside the greenhouse decreased, and the amount of water that condensed and adhered to the crops was small. In some cases, the occurrence of four pests and diseases is suppressed. It is not clear why the humidity in the greenhouse decreases and the amount of water that condenses on the crops is small, but because fluorine-based surfactants and non-ionic drip-proofing agents are used, excessive moisture near the surface of the coating material increases. This is thought to be because the coating material itself has a great effect of adsorbing or adhering #C.

Examples are given below to explain the present invention in more detail, but the present invention is not limited to these Examples.

Example (1) Film Preparation The following formulation was kneaded and a film with a thickness of aOS% and a1% was created using a calendar. 1% For comparison, a film of similar thickness was prepared using the following comparative example formulation. al
The xM[O film was used for the exterior lining, and the aOS% thick film was used for the curtain.

Nonionic fluorine surfactant (2) manufactured by Nippon Ink Co., Ltd.
) Cultivation results ■ Chie cucumber cultivation results Area Tochigi Ashikaga (sooy house) Cultivation period 11
Monthly 26th to June 10th Product Species Ogami No. 2 Night temperature 13℃ secured Book December 18th 6:00 pm Judgment criteria ○---Ha Almost no occurrence Δ... Frequent occurrence■ Watermelon cultivation Result Area Ota, Gunma Prefecture (500m/house) Cultivation period
November 15th to February 28th Variety: Tenryu No. 2 Night temperature: 18°C 11/21, 5pm ■ Melon cultivation results District: Chiba-based Shimodate (250d house) Cultivation period: 1
From May 10th to May 20th Variety: Prince Main Night temperature: 13℃ guaranteed 0 Strawberry cultivation results Area: Tochigi Ashikaga (400s/house) Cultivation period
October 25th to June 10th (Coating #i from January 15th) Variety Danamoto December 25th 16:00 As is clear from the above cultivation results, when the coating material of the present invention is applied It can be seen that the humidity inside the greenhouse is low, and the occurrence of pests and diseases is extremely suppressed.

Claims (1)

[Claims] A cover material for cultivating cucumbers, watermelons, melons, and strawberries, which contains ~tO parts by weight of a fluorine-based surfactant.