CN1021012C - Prevention and control method of bacterial leaf-blight of paddy rice - Google Patents
Prevention and control method of bacterial leaf-blight of paddy rice Download PDFInfo
- Publication number
- CN1021012C CN1021012C CN 87104258 CN87104258A CN1021012C CN 1021012 C CN1021012 C CN 1021012C CN 87104258 CN87104258 CN 87104258 CN 87104258 A CN87104258 A CN 87104258A CN 1021012 C CN1021012 C CN 1021012C
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- rice
- blight
- prevention
- paddy rice
- control method
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Abstract
The present invention belongs to the class of germicide as organic pesticide, which uses a water solution of 0, 0-diethyl ammonium dithiophosphate [(C2H5O) 2PS2NH4 with the code name of NF-133] as a main effective ingredient for controlling the bacterial blight of rice and citrus canker. The present invention has the advantages of visible effect, little toxicity, little environment pollution, convenient and safe use, convenient transportation and stable storage.
Description
The invention belongs to organic farm bactericide.
Bacterial blight of rice is one of big disease of paddy rice.As far back as the sixties abroad just begin to develop the operation phenazine oxide (
) oppose withered azoles (
) and the enemy withered two (
NHCH
2NH
) wait as preventing and treating the chemical agent of bacterial blight of rice, practice shows, the anti-heterodyne of phenazine oxide, cost height, and oppose withered azoles and the withered two toxic problems of enemy.The seventies Japan development makes new advances prevent and treat the white leaf alkali of bacterial blight of rice medicament (
), once to promote for many years in China, effect is very undesirable.Therefore, seeking low, the safe in utilization and obvious results of a kind of toxicity, to prevent and treat the new medicament and the method thereof of bacterial blight of rice be a pressing problem.
The object of the present invention is to provide a kind of preventive effect significantly, chemical agent that toxicity is very low is used to prevent and treat bacterial blight of rice, and easy to use, safe, environmental pollution is little.In addition, can stimulate paddy growth to increase output in the use in following seedling stage of anosis condition.
The present invention is with 0,0-diethyl phosphorothioate ammonium salt (C
2H
5O)
2-
SNH
4(code name NF-133) as basic effective constituents, is mixed with the aqueous solution, and direct paddy rice to the bacterial leaf-blight initial stage carries out leaf surface treatment and orange tree is directly sprayed, and just can reach protection effect.
The present invention is with 0, and 0-diethyl phosphorothioate ammonium salt is mixed with the aqueous solution of 500 to 1000PPm concentration or is processed into sustained release agent, with every mu 70 gram to 100 consumptions that restrain paddy rice is carried out leaf surface treatment.
Example 1
2 gram triethylamines are joined in the 60 gram neutral oils (water-insoluble in the phosphate), the phosphoric sulfide (0.5 mole) that under constantly stirring, adds 111 grams, drip 100 gram absolute ethyl alcohols (2.17 moles) then gradually, dripped in 45 minutes, temperature keeps about 50 ℃, tail gas absorbs with NaOH solution, under 70 ℃ of temperature, reacted two hours then, decompression extracts sour gas, add 1 liter of benzinum, feed NH
3Gas is 8 to PH, and temperature remains on about 10 ℃.Filter, use petroleum ether, solid product 0,0-diethyl phosphorothioate ammonium salt 192.5 restrains, fusing point is more than 165 ℃, content 95%, yield 90%(is with P
2S
5Meter), the mother liquor steaming removes benzinum and gets neutral oil, and the two all can be recycled benzinum and neutral oil.
Example 2
Prevent and treat the bacterial blight of rice pot experiment.
No. 11 conduct tests in Nanjing seed rice, the rice seedling order is that the rice seedling of 5-6 sheet leaf, bacterial classification are Xanthomonas oryzae K
S-8-4Every processing 24 young plants are established three repetitions, and handle rice leaf with the spraying of the NF-133 aqueous solution morning, treats that soup is air-dry, and afternoon, acupuncture connect bacterium, placed in the greenhouse, waited to contrast abundant morbidity, and check result sees Table one.
Example 3
The control field trials of rice bacterial blight.
Suqian, Jiangsu Province county establishes the experimental field in bacterial blight of rice grave illness district in Lai Long township.Seed rice is excellent No. 2 of Shan, 0.5 mu in every district, and July 21 was sprayed the NF-133 soup for the first time before three repetition bacterial leaf-blights were just sent out, and spray medicine second time August 4, and check result after ten days sees Table two.
Example 4
Test to the rice yield influence.
The test of the Xiao Shanxian of Zhejiang Province late rice.Seed rice is elegant water 48, and sandy soil, PH are 8, and four repetitions are established, randomized arrangement in 20 square metres of sub-districts.The extermination of disease and insect pest is not found bacterial leaf-blight as usual.September 12 was sprayed the NF-133 soup for the first time, treated ripe back branch sub-district calculating output.Selective examination rice plant height, grain number, not plump paddy rate, ripening rate and thousand kernel weight, data statistics are adopted new multiple apart from extreme difference test (LSR), the results are shown in Table three.
The NF-133 that the present invention relates to is a kind of new protective fungicide, and the result of the test from table one to table three shows that the NF-133 medicament has tangible diseases prevention to bacterial blight of rice and protects and produce effect.Can stimulate paddy growth in the unconditional use in following seedling stage of paddy rice, there is obvious production-increasing function the middle and later periods.In addition, the NF-133 stable storage is convenient to transport easy to use, and toxicity is very low, and environmental pollution is little.
List of references
〔1〕Makoto Oda;Appl.Microbiol.，14（3）365-7（1966）（Eng.）.
〔2〕Kunihito Yakushiji;Takeda Kenkyusho HO（1970），29（1）179-81（Japan）
〔3〕Ger.Offen.1，923，939.
〔4〕Kazuto Nakagami;Nippon Noyaku Gakkaishi 1980，5（4）511-16（Eng.）.
Claims (1)
1, a kind of method of preventing and treating bacterial blight of rice is characterized in that (C
2H
5O)
2 
SNH
4Be mixed with 500 to 1000ppm the aqueous solution, directly carry out foliar spray at the bacterial blight of rice their early stage and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104258 CN1021012C (en) | 1987-06-15 | 1987-06-15 | Prevention and control method of bacterial leaf-blight of paddy rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104258 CN1021012C (en) | 1987-06-15 | 1987-06-15 | Prevention and control method of bacterial leaf-blight of paddy rice |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92113890 Division CN1030032C (en) | 1987-06-15 | 1987-06-15 | Method for controlling canker of citrus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87104258A CN87104258A (en) | 1988-12-28 |
| CN1021012C true CN1021012C (en) | 1993-06-02 |
Family
ID=4814800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87104258 Expired - Fee Related CN1021012C (en) | 1987-06-15 | 1987-06-15 | Prevention and control method of bacterial leaf-blight of paddy rice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021012C (en) |
-
1987
- 1987-06-15 CN CN 87104258 patent/CN1021012C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN87104258A (en) | 1988-12-28 |
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|---|---|---|---|
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |