CN103404522B - Water-soaking resistant paddy rice suspended seed coating agent - Google Patents
Water-soaking resistant paddy rice suspended seed coating agent Download PDFInfo
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- CN103404522B CN103404522B CN201310344267.8A CN201310344267A CN103404522B CN 103404522 B CN103404522 B CN 103404522B CN 201310344267 A CN201310344267 A CN 201310344267A CN 103404522 B CN103404522 B CN 103404522B
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Abstract
The invention relates to the field of agricultural biotechnologies, particularly to a water-soaking resistant paddy rice suspended seed coating agent which contains two bactericidal active ingredients. According to the seed coating agent, tricyclazole and carbendazol are mixed, the dose of tricyclazole is greatly reduced, and the disease prevention effect is guaranteed. The seed coating agent is resistant to water soaking, is safe for seeds, releases bactericidal active substances slowly, is stable in effect, can effectively control rice blast in the seedling stage of paddy rice, and achieves the effect that no pesticide needs to be sprayed any more in the seedling stage. The seed coating agent overcomes the defect that seeds soaked with conventional agents need to be sprayed with pesticides repeatedly, and has the advantages of saving labor and time and the like.
Description
Technical field
The present invention relates to agricultural biological technical field, relate to a kind of soaking-resistant Rice Suspension seed coat agent specifically.
Background technology
Rice blast is one of Major Diseases that in Rice Production, occurrence injury is the most serious, and particularly under the weather conditions of Sichuan warm moist, the occurrence injury of rice blast is especially serious.For a long time, in production, the link of medicament prevention rice blast comprises: rice seedling bed phase prevention seedling pest and leaf pest; Honda phase dispenser control leaf pest and prevention panicle blast.At rice blast Chang Faqu, the general dispenser of a season paddy rice 3 ~ 4 times, rice blast retransmission region and repeating transmission time dispenser 5 ~ 6 times.
In the medicament of prevention rice blast, the whole world only has so far " tricyclazole ", and this medicament is effective.Therefore, select medicament " tricyclazole " as the prevention medicament controlling nursery period seedling pest, leaf seasonal febrile diseases and Honda phase panicle blast for many years always.Use the medicament " tricyclazole " that kind is single for a long time, in a large number, easily cause Pyricularia oryzae to develop immunity to drugs, thus reduce control efficiency, even entirely ineffective, this produces the upper potential great risk of preventing and treating rice blast and existing at present.Lot of domestic and international expert, scholar are warning always and are finding the method and access changing this situation, but make substantial progress not yet so far in research and development control rice blast new compound.
Given this, if " tricyclazole " and the ideal formulations of other fungicide compounding can be developed, realize both significantly having reduced " tricyclazole " consumption, can protection effect be ensured again, be of great practical significance aborning undoubtedly.
Can effectively control rice blast harm on producing, depend primarily on two key links, one be control nursery period seedling pest and leaf pest, and two is control fringe phase panicle blast.Wherein, control nursery period seedling pest, leaf pest are the most key.
Nursery period prevention rice blast current methods is: spray " tricyclazole " with " tricyclazole " liquid seed soaking+seedbed phase before sowing.Due to liquid seed soaking weak effect under the flooding condition of watery ricenursery field, the duration is short, and the seedbed phase needs to spray " tricyclazole " toward contact and prevents and treats for 2 ~ 3 times.Therefore, can by improving application method, solving in existing production nursery period control rice blast needs repeatedly dispenser, thus reduces with medicament consumption, improves and prevent and treat efficiency, reduce cost accounting and environmental pollution etc., is the problem being worth exploring.
Seed coat agent is a kind of novel crops seed treatment grown up in the world in the last few years.Adopt seed coat agent can by the agricultural chemicals of control crops seedling stage damage by disease and insect, promote that the trace element that plant growth needs and plant growth regulator etc. be wrapped in the surface of the seed, make its slow releasing, thus increase substantially medicine, fertile service efficiency extend the lasting period.It also overcomes the shortcomings such as conventional method seed dressing medicine, fertilizer easily come off.Due to seed coat agent economy, efficient, the lasting period is long, easy to use, increase yield significantly, again easily for peasant's grasp etc. is with conspicuous characteristics, causes the extensive attention of countries in the world and develop rapidly.
Domestic seed coat agent research starts from the eighties in last century, the dry crop seed coat agent series of products such as the corn developed, wheat, cotton, soybean etc. are multiple, not only after production is applied, achieve significant economic results in society, but also made corresponding target level of product quality, for promoting that the development of China's seed coat agent industry is laid a good foundation.
In dressing agent for rice, because raising rice seedlings carries out under the condition of paddy field, produce upper in order to improve emergence rate and prevent seedling rot in addition, must carry out before requiring sowing soaking seed, vernalization, thus propose special quality requirement to dressing agent for rice product.
Summary of the invention
The object of the invention is for rice seedling bed phase rice blast occurrence injury serious, adopt the control of conventional spray medicine, need repeatedly dispenser by stages, take a lot of work, time-consuming, Controlling benefit is low, the problem such as big for environment pollution, and for the feature of paddy rice and the particularity that uses under the condition of paddy field, propose a kind ofly to solve not soaking-resistant that above-mentioned dressing agent for rice faces, dangerous to seed, pharmacy effect is unstable, effectively can control rice seedling bed phase multiple damage by disease and insect, realize a kind of soaking-resistant Rice Suspension seed coat agent of capsuled seed nursery period not dispenser substantially.
For achieving the above object, the technical solution used in the present invention is: a kind of soaking-resistant Rice Suspension seed coat agent, is characterized in that:
1. be the pesticidal active substance of 1 ~ 90% by weight percentage, described pesticidal active substance comprises tricyclazole and carbendazim, and proportioning is 1:0.1 ~ 1:10;
Described tricyclazole active ingredient is 95%, and described carbendazim active ingredient is 95%;
2. active substance suspends in the film former mixture of the macromolecular material composition being evenly present in soaking-resistant, described film forming agent composition material is: one or more in polyvinyl alcohol, CMC, hydroxyethylcellulose, polymethyl methacrylate, and the part by weight of active substance and film forming agent material is 9: 1 ~ 1: 9;
3. must auxiliary element containing being processed into other of seed coat agent, auxiliary element is dispersion machine, defoamer, thickener, antifreezing agent, preservative and warning colouration.
Further, described dispersant contains one or both in naphthalene sulfonic acid-formaldehyde condensation product, lauryl sodium sulfate.
Further, described defoamer is tributyl phosphate.
Further, described thickener is one or both in xanthans, alumina silicate.
Further, described antifreezing agent is propane diols.
Further, described preservative is Sodium Benzoate.
Further, described aposematic percentage by weight is 0.1-10%, be selected from famille rose, Congo red, acid scarlet, rose-red in one or more.
The preparation method of soaking-resistant Rice Suspension seed coat agent:
The first step: in 90% Mensurating Tricyclazole Technical and 90% carbendazim active compound, add wetting dispersing agent: naphthalene sulfonic acid-formaldehyde condensation product, lauryl sodium sulfate, adding defoamer: tributyl phosphate, add thickener: xanthans, Magnesiumaluminumsilicate; Add antifreezing agent: propane diols; Add preservative: Sodium Benzoate; Add water supplementary.
Second step: former medicine and auxiliary agent are mixed, carries out just pulverizing 30min at high-speed shearing machine (8 000r/min); Pour into again in sand mill and mix with abrasive media 1: 1.1 ~ 1: 1.2, start sand mill (1 440r/min), grinding 1.5 ~ 2h, by for subsequent use for obtained tricyclazole carbendazim aqueous suspension agent.
3rd step: be mixed in the aqueous solution of film at the 500 grams of polyvinyl alcohol, the hydroxyethylcellulose that contain 4%, add bentonite, add rose-red, stirring makes it to mix, then the tricyclazole carbendazim aqueous suspension agent of preparation is added, and continue to be uniformly mixed, obtain 10% tricyclazole carbendazim soaking-resistant Rice Suspension seed coat agent.
Advantageous Effects of the present invention is:
(1) in the inventive solutions, because by " tricyclazole " and carbendazim mixture, significantly reduce " tricyclazole " consumption, can protection effect be ensured again.
(2) seed coat agent soaking-resistant of the present invention, to seed safety; Fungicidal active substance discharges slowly in kind of clothing, and effect stability, can effectively control rice seedling bed phase rice blast, realizes the effect of capsuled seed nursery period no longer dispenser; Instant invention overcomes the shortcoming that conventional dose seed soaking nursery period also needs repeatedly dispenser, there is saving of labor, save time and save the advantages such as labour.
Embodiment
In order to better the present invention is described, be further described below by embodiment, but special instruction is the scope that the application is not limited to following embodiment:
Example 1
Dressing agent for rice safety evaluatio laboratory test results is soaked in the tolerance of tricyclazole carbendazim
This is tested and carries out in laboratory, Institute of Plant Protection, academy of agricultural sciences of Sichuan Province on April in season 10 in rice growing.
Test method: (seed coat agent No. 1 tricyclazole: carbendazim is 1:3, No. 2, seed coat agent is 1:1, and No. 3, seed coat agent is 3:1 by the formula of tricyclazole and carbendazim 3 kinds of different mixed ratios.Lower same), make soaking-resistant dressing agent for rice as stated above.Seed pelleting processing method: the ratio (that is: seed coat agent: seed rice=1:30, lower same) of joining 30 grams of seed rice in 1 milliliter of seed coat agent carries out Cotton seeds.Seed rice after coated process dries in the air 4 hours (lower with) after kind of clothing is completely solid, by seed weight 3 extraordinarily clear water soak in beaker 48 hours (midway do not change water, lower same), do not clean after picking up, directly sowing (is padded 2 layers of moistening filter paper moisturizing bottom ware) and is observed germination vigor and germination rate in diameter 15cm culture dish.Every ware broadcasts 100, often processes repetition 4 times.After after planting the 4th day investigation germination vigor, cover moistening fine sand and continue to observe germination rate.
Result of the test: according to indoor measurement result (table 1), through the seed rice for examination seed coat agent 1 ~ No. 6 Cotton seeds, cultivate 4 days under normal temperature laboratory (20 ~ 26 DEG C) condition, capsuled seed germination vigor is on average followed successively by 89.25%, 87.50%, 85.75%, 88.25%, 88.75% and 89.75%, and clear water contrast germination vigor is 86.50%.Between Cotton seeds and clear water contrast, potentiality of seed no significant difference.Investigation in after planting 7 days, the process of No. 1 ~ 6, capsuled seed germination rate seed coat agent is 94.50%, 93.75%, 90.75%, 93.62%, 92.75% and 90.25% in turn, clear water contrast is 90.75%, and between seed coat agent process contrasts with clear water, percentage of seedgermination difference is not obvious.
Above-mentioned result of the test display: through the seed rice for examination seed coat agent Cotton seeds, soak seed according to a conventional method, to the germination vigor of seed and germination rate all without bad, illustrates that soaking-resistant dressing agent for rice of the present invention is fool proof to rice paddy seed.
Table 13 kinds of different tricyclazoles and carbendazim proportioning soaking-resistant dressing agent for rice indoor security measurement result
Example 2
Under watery ricenursery condition, dressing agent for rice safety evaluatio field test results is soaked in the tolerance of tricyclazole carbendazim
This is tested and carries out in Jintang County dragon prestige 2 groups 5 days April in season to May 10 in rice growing.
Test method:
1. seed rice processing method: (seed coat agent No. 1 tricyclazole: carbendazim is 1:3, No. 2 is 1:1, and No. 3 is 3:1 to adopt tricyclazole mixed ratio formula different from carbendazim 3 kinds.Lower with) the soaking-resistant dressing agent for rice made, carry out Cotton seeds in the ratio that 1 milliliter of seed coat agent joins 30 grams of seed rice respectively.Seed rice after coated process dries in the air 4 hours after kind of clothing is completely solid, respectively by seed weight 3 extraordinarily clear water soak 48 hours, do not clean after picking up, after installing with cloth bag respectively, in the insulating box being placed on temperature 36 DEG C, vernalization 10 is little of seed rice cut dew bud, for sowing.
2. field trial method: this test is carried out under traditional watery ricenursery field condition, rice seedling bed prepare and arrange and local Production of Large Fields be consistent.Plot area 10m between rice seedling bed
2, between process, the arrangement of random district group, repeats 3 times.Community seeding quantity (by dry seeds, lower same) is with reference to Production of Large Fields 7.5g/m
2.April 5 sowing above-mentioned coated, seed soaking, vernalization seed rice after, carry out mud immediately and step on paddy, and take shed overlay film insulation.Experimental field rich water quality management is all consistent with Production of Large Fields.
3. control time, content and method: after planting 15 days, investigation is emerged and is counted and the fresh seedling weight of hundred strains.Investigation method: every 5, community sampling, often some 0.11m
2in rice shoot number, and get 20 strain rice shoots at random and uproop, take back indoor after cleaning and dry title fresh weight.
Result of the test:
Field plot Security test result of the test (table 2) shows: through the seed rice for examination 3 kinds of soaking-resistant dressing agent for rice Cotton seeds, according to producing, upper existing method of raising seedling carries out sowing front seed soaking 48 hours, high temperature vernalization 10 is little sows after cut dew bud, broadcast investigation in latter 15 days, every square chi of (0.11m
2) number of emerging, 3 kinds of many 17 seedlings of seed coat agent process average specific clear water contrast, number of emerging is average increases by 8.18%; Rice shoot hundred strain fresh weight, 3 kinds of seed coat agent process on average increase by 46.8 grams, and fresh seedling anharmonic ratio clear water contrast is average improves 25.64%.
Above-mentioned experiment results proved, adopt the present invention dressing agent for rice of resistance to immersion dressing Cotton seeds seed, carry out according to a conventional method soaking seed, vernalization, sowing, under watery ricenursery condition, seed rice to be germinateed, safety of emerging, and the number of emerging of seed can be improved, increase rice shoot fresh weight, be conducive to cultivating strong seedling.
The lower 3 kinds of soaking-resistant dressing agent for rice safety evaluatio small plot experiment results of table 2 field water seedling condition
Case 3
Dressing agent for rice control rice blast effect assessment sick garden result of the test is soaked in the tolerance of tricyclazole carbendazim
Test method:
1. seed rice processing method:
Test process:
No. 1, seed coat agent (tricyclazole: carbendazim is 1:3)
No. 2, seed coat agent (tricyclazole: carbendazim is 1:1)
No. 3, seed coat agent (tricyclazole: carbendazim is 3:1)
Tricyclazole seed soaking contrast (20% tricyclazole wettable powder 750 liquid seed soaking)
Clear water contrast CK
Adopt the soaking-resistant dressing agent for rice made from the above-mentioned 3 kinds of different mixed ratio formulas of carbendazim of tricyclazole, the ratio of joining 30 grams of seed rice in 1 milliliter of seed coat agent respectively carries out Cotton seeds.Seed rice after coated process dries in the air 4 hours after kind of clothing is completely solid, respectively by seed weight 3 extraordinarily clear water soak 48 hours, do not clean after picking up, after installing with cloth bag respectively, in the insulating box being placed on temperature 36 DEG C, vernalization 10 is little of seed rice cut dew bud, for sowing.
2. sick garden test method: this test is carried out in Inst of Plant Protection, Sichuan Academy of Agricultural Sciences's plant disease test garden.Test garden plot area 5m
2, between 3 kinds of seed coat agent process, the seed soaking of tricyclazole medicine company and clear water control treatment, adopt the group arrangement of random district, repeat 3 times, Gong21Ge community.Adopt containing method of raising seedling seedling for examination dressing paddy rice in test garden, that is: by whole for the soil in each community thin, rake, after irrigating with clear water, handle dressing chitting piece for subsequent use well by the evenly sowing of 50 grams, every community by above-mentioned, after covering fine earth, take shed cover film heat and moisture preserving.After planting 10 days seedling growth to 2 leaf 1 heart stages, artificial infection Pyricularia oryzae steamed stuffed bun suspension, and overlay film moisturizing.
3. control time, content and method: to connect after bacterium 15 days, carry out disease survey after rice blast is fully fallen ill.Method is: every 5, community sampling, and often 10 strain rice shoots (totally 50 strains) of choosing at random, investigate and record non-incidence of leaf number and the incidence of leaf number of every strain rice shoot; Investigation and the whole Lesion numbers recorded on every strain rice shoot morbidity leaf.Preventive effect is calculated respectively with sick leaf rate and scab number.
Result of the test:
According to the result of the test in table 3, all have remarkable control effects for 1 ~ No. 3 process of examination soaking-resistant seed coat agent to rice blast, wherein, the effect controlling the morbidity of rice shoot blade is 50.02 ~ 81.24%, and the effect controlling Lesion number reaches 69.35 ~ 98.69%.20% tricyclazole, the 750 times of liquid seed soaking contrasts being obviously better than producing upper existing popularization control the effect 43.44% of blade morbidity and control the effect 67.73% of Lesion number.
Table 3 soaking-resistant dressing agent for rice water prevention rice seedling leaf seasonal febrile diseases garden result of the test
Case 4
Dressing agent for rice control rice blast effect assessment watery ricenursery field result of the test is soaked in the tolerance of tricyclazole carbendazim
This test in paddy rice broadcast plant April 2 season to September 4 carry out in Wang Dian village, Pujiang County, rice blast Chang Faqu Sichuan Province.
1. seed rice processing method:
Test process:
No. 1, seed coat agent (tricyclazole: carbendazim is 1:3)
No. 2, seed coat agent (tricyclazole: carbendazim is 1:1)
No. 3, seed coat agent (tricyclazole: carbendazim is 3:1)
Tricyclazole seed soaking contrast (20% tricyclazole wettable powder 750 liquid seed soaking)
Clear water contrast CK
Adopt the soaking-resistant dressing agent for rice made from the above-mentioned 3 kinds of different mixed ratio formulas of carbendazim of tricyclazole, the ratio of joining 30 grams of seed rice in 1 milliliter of seed coat agent respectively carries out Cotton seeds.Seed rice after coated process dries in the air 4 hours after kind of clothing is completely solid, respectively by seed weight 3 extraordinarily clear water soak 48 hours, do not clean after picking up, after installing with cloth bag respectively, in the insulating box being placed on temperature 36 DEG C, vernalization 10 is little of seed rice cut dew bud, for sowing.
2. field trial method: this test is carried out under traditional watery ricenursery field condition, rice seedling bed prepare and arrange and local Production of Large Fields be consistent.Experimental plot, rice seedling bed area 10m
2, between process, the arrangement of random district group, repeats 3 times, fills with between community without isolation, water in field string.Community seeding quantity is with reference to Production of Large Fields sowing quantity 7.5g/m
2meter.April 2 sowing above-mentioned coated, seed soaking, vernalization seed rice after, carry out mud immediately and step on paddy, and take shed overlay film insulation.Experimental field rich water quality management is all consistent with Production of Large Fields.After planting 10 days seedling growth to 2 leaf 1 heart stages, artificial infection Pyricularia oryzae steamed stuffed bun suspension, and overlay film moisturizing.
3. control time, content and method: connect 20 days (namely after planting 30 days) after bacterium, carries out disease first time investigation after rice blast is fully fallen ill.After first time investigation, continue to retain for examination rice seedling bed rice shoot, observe drug effect holding effect further, and respectively carry out a Disease investigation respectively at after planting 46 days, 89 days and 154 days.Investigation method: every 5, community sampling, often 10 strain rice shoots (totally 50 strains) of choosing at random, investigate and record the severity of the non-incidence of leaf number of every strain rice shoot, incidence of leaf number and the sick leaf of every sheet.Calculate disease index with sick leaf severity, then calculate preventive effect with disease index.
Result of the test
Results of field plot (table 4) shows: through the seed rice of No. 1, seed coat agent, No. 2, seed coat agent and seed coat agent No. 3 Cotton seeds, sow after seed soaking, vernalization according to a conventional method, minizone, watery ricenursery field without isolation, water in field pour water string fill with condition under, after planting 30 days, the average effect of control rice blast reaches 78.04 ~ 98.06%, and 20% tricyclazole that production is promoted, 750 times of liquid seed soaking contrast preventive effects are 32.28%; After planting 89 days, 3 kinds of seed coat agent process were to controlling the remarkable result that rice blast still has 52.95 ~ 79.25%, 20% tricyclazole WP750 times liquid seed soaking and clear water control treatment, and rice shoot is because of serious morbidity all death.Show that the effect of the present invention's 3 kinds of dressing agent for rice soaking-resistants and Fungicidal active substance slowly-releasing is very outstanding, thus show the remarkable result that can control rice blast lasting period overlength under flooding condition.
Table 4 soaking-resistant dressing agent for rice control rice blast results of field plot
Claims (1)
1. a soaking-resistant Rice Suspension seed coat agent, is characterized in that:
1. be the pesticidal active substance of 1 ~ 90% by weight percentage, described pesticidal active substance comprises tricyclazole and carbendazim, and proportioning is 1:1 or 3:1;
Described tricyclazole active ingredient is 95%, and described carbendazim active ingredient is 95%;
2. active substance suspends in the film former mixture of the macromolecular material composition being evenly present in soaking-resistant, described film forming agent composition material is: one or more in polyvinyl alcohol, CMC, hydroxyethylcellulose, polymethyl methacrylate, and the part by weight of active substance and film forming agent material is 9: 1 ~ 1: 9;
3. must auxiliary element containing being processed into other of seed coat agent, auxiliary element is dispersant, defoamer, thickener, antifreezing agent, preservative and warning colouration;
Described dispersant contain in naphthalene sulfonic acid-formaldehyde condensation product, lauryl sodium sulfate one or both;
Described defoamer is tributyl phosphate;
Described thickener is one or both in xanthans, alumina silicate;
Described antifreezing agent is propane diols;
Described preservative is Sodium Benzoate;
Described aposematic percentage by weight is 0.1-10%, be selected from famille rose, Congo red, acid scarlet, rose-red in one or more.
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| CN201310344267.8A CN103404522B (en) | 2013-08-08 | 2013-08-08 | Water-soaking resistant paddy rice suspended seed coating agent |
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| CN107347538A (en) * | 2017-08-09 | 2017-11-17 | 福建小薇金匙科技孵化有限公司 | A kind of anti-rice shoot seedling rot method of high mountain organic paddy rice |
| CN108378040B (en) * | 2018-04-10 | 2020-10-27 | 江阴苏利化学股份有限公司 | Safe azoxystrobin suspending agent and preparation method and application thereof |
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| DE3333411A1 (en) * | 1983-09-16 | 1985-04-04 | Bayer Ag, 5090 Leverkusen | FUNGICIDAL AGENT |
| CN1183894A (en) * | 1996-12-01 | 1998-06-10 | 郦安江 | Sanduo mixture and its recompounding process |
| CN1228257A (en) * | 1999-01-13 | 1999-09-15 | 徐德锋 | Multiple-effect rice seed dressing agent series composition |
| CN101933517A (en) * | 2010-09-09 | 2011-01-05 | 四川红种子高新农业有限责任公司 | Soybean suspension seed coating agent |
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