CN1157098A - Compound ichthyodin, thiophanate-methyl mixture - Google Patents

Abstract

The present invention relates to an agricultural chemical preparation for preventing and controlling seedling blight produced in seedling stage and promoting seedling growth and strengthening seedlings. Said invented product is made up by proportioning methyl-thiophanate whose molecular formula is 1,2-di(3-methylcarbonyl-2-thioureido) benzol and acetone ichthyodin. Said mixture is characterized by that the methyl-thiophanate doesn't produce chemical reaction with acetone ichthyodin, so that after having been mixed they possess obvious synergistic effect.

Description

Multiple ichthyodin, the first mixture

The present invention relates to a kind of agricultural chemicals.

The damping off that rice seedling takes place has two types, a kind of is the germ property damping off that is taken place by the various infection processes that exist in the soil, its symptom is: top, spot film spot performance paddy rice seedling leaf roll curly hair Huang, underground root are fallen ill and are yellowish-brown when light during morbidity, the blackening brown is withered when serious, basal part of stem is easily broken when holding together with hand, and it is downright bad to push growing point aside; Another kind is because nutrition supply deficiency or disease that miscarriage took place are the physiological damping off, and its symptom is that the overground part rice shoot generally turns to be yellow, the later stage leaf roll is right and wrong upright, the withered look of underground yellowish-brown, and it is not easily broken to hold together basal part of stem with hand, and it is not downright bad to push growing point aside.Two types of their early stages are difference easily, and two types of later stages all exist.The method that the method for present control is mainly taked to carry out soil disinfection or leaf surface treatment with agricultural chemicals such as bactericide " fenaminosulf ", " upright withered spirits " has been prevented and treated certain effect, but the defective that exists is: the characteristic of fenaminosulf is that easy photodissociation, effective drug duration are short, it is single that two kinds of medicaments all exist the sterilization kind, can only the damping off of germ type be produced effect.So the development fungicidal spectrum is wide, protection effect is good, and sick seedling control back is recovered fast, promotes that the pharmaceutical preparations in strong sprout is to be badly in need of problem on the Rice Production, thereby causes the thinking of invention development new type bactericide.

The objective of the invention is to invent a kind of damping off that the paddy rice phase is taken place has prevention and therapeutic action to use that growth has the multiple ichthyodin that promotes that act on strong sprout, first mixture to the paddy rice seedling.

The object of the present invention is achieved like this:

The present inventor finds in the process of the test of selecting various sterilization agent, plant growth promoter for use, chemical bactericide " thiophanate-methyl " becomes preparation with " acetone ichthyodin " through specific processes, be used for the seedling cultivation of rice phase, the prevention of damping off and result of treatment obviously are better than existing bactericide.Finished the present invention through further experimental study.

The present invention selects " thiophanate-methyl " and " acetone ichthyodin " to make suspending agent through mechanical agitation, is used for the control of rice seedling damping off, and pharmaceutically dosage form is fit to control rice seedling damping off, and to paddy rice seedling safety, using method is easy.

" thiophanate-methyl " that the present invention selects for use belongs to substituted beneze-group fungicides, and its chemical name is: 1, and 2-two (3-first carbonyl-2-ghiourea group) benzene can be prevented and treated eurypalynous germ, has interior suction, prevention and therapeutic action; It is converted into carbendazim after by plant absorbing in planting body, disturb the formation of imitative hammer body in the mitosis of bacterium and influence the red born of the same parents' division of germ.

" acetone ichthyodin " sulfonic acid wherein that the present invention selects for use is a kind of very strong organic acid, has bactericidal action, reconciles soil acidity.And rice seedling growth needs slant acidity soil condition.Ichthyodin is a kind of plant growth promoter, and ammonium wherein is a kind of quick-acting nitrogen, and plant is had the nitrogen pick-up effect, so " acetone ichthyodin " has sterilization, reconciles P in soil H, promotes the plant growing effect.

By the mix preparation of evidence " thiophanate-methyl " with " acetone ichthyodin ", chemical change does not take place, proterties separately there is not change.Has synergistic effect after the mixing.

Compositing formula of the present invention is 1 for containing molecular formula, and the thiophanate-methyl 0.5%～9% of 2-two (3-first carbonyl-2-ghiourea group) benzene contains acetone ichthyodin 8%～20%, and above-mentioned content is the content in the aqua of the present invention.

Another feature of the present invention is for the damping off that the acetone ichthyodin is applied to prevent and treats rice seedling and take place and promote paddy rice seedling strong sprout.

With 16.5% multiple ichthyodin, to analyze its effect as follows for example for first mixture (contain thiophanate-methyl 0.5%, contain acetone ichthyodin 16%):

One, 16.5% multiple ichthyodin, the test of first mixture formula rate:

1, chemicals treatment

Sequence number	Handle	Commodity amount (gram: milliliter/mu)	Effective ingredient (gram/mu)	Remarks
					1	16.5% multiple ichthyodin, the first mixture	????3335	????550.25	Composite dose
2	16.5% multiple ichthyodin, the first mixture	????6670	????1100.5	Composite dose
					3	16.5% multiple ichthyodin, the first mixture	????10005	????1650.75	Composite dose
4	70% thiophanate-methyl	????5336	????3732.2	Single agent before the CK usual amounts is mixed
					5	15% ichthyodin	????7880	????1182.0	Single agent before the CK usual amounts is mixed
6	CK (clear water)	????-	????-	The no medicine of CK contrast district
					7	10% upright withered Lingshui Spring agent	????6670	????667.0	The contrast of CK like product

2, test method: 3 square metres of every sub-district areas, repeat to amount to 28 sub-districts 4 times.Carry out spray pesticide with sprayer at paddy rice seedling two leaf stage.

3, pilot survey: disease survey: the treatment region rice shoot is all investigated.

Seedling quality investigation: random sampling 3 points, every 100

Young plant.

4, drug effect computational methods:

Two, pharmacy test result

1, control rice seedling blight result investigation

Subordinate list (one)

Handle	Dose (gram/mu)	The incidence of disease (%)	Control efficiency (%)	The significance of difference
						??0.05	????0.01
				16.5% multiple ichthyodin, the first mixture	????3335			????3.0	????69.3	????b	????B
16.5% multiple ichthyodin, the first mixture	????6670	????5.9	????81.7			????a	????AB
				16.5% multiple ichthyodin, the first mixture	????10005			????9.9	????90.7	????a	????A
70% thiophanate-methyl	????5336	????15.5	????52.0			????c	????C
				15% ichthyodin	????7880			????10.8	????49.0	????c	????C
CK (clear water)	????-	????32.3	????-			????d	????D
				10% upright withered Lingshui Spring agent	????6670			????11.9	????66.3	????b	????BC

2, medicament is to the influence of rice seedling growth

Subordinate list (two)

Handle	Dose (gram/mu)	Mu high (cm)	The leaf order	Stem thick (cm)	Radical		Root is long		Hundred seedling fresh weight g		Hundred seedling dry weight g
													Radical	Increase (%)	Length	Increase (%)	On the ground	Underground	On the ground	Underground
					16.5% multiple ichthyodin, the first mixture	??3335	??15.8	????2.9	?0.20	?12.8	?24.3	?3.6									??28.6	??14.6	??6.0	??3.1	??3.0
16.5% multiple ichthyodin, the first mixture	??6670	??16.3	????3.0	?0.21									?13.0	?26.2	?3.8	??35.7	??15.2	??6.8	??3.3	??3.2
					16.5% multiple ichthyodin, the first mixture	??10005	??16.5	????3.0	?0.20	?13.6	?32.0	?3.8									??35.7	??16.8	??7.3	??3.4	??3.3
70% thiophanate-methyl	????5335	??15.5	????2.8	?0.20									?12.5	?21.4	?3.1	??10.7	??13.0	??5.5	??3.0	??2.6
					15% ichthyodin	????7880	??15.2	????2.8	?0.19	?12.0	?17.1	?3.2									??14.3	??13.5	??5.6	??3.0	??2.7
CK (clear water)	????-	??14.8	????2.7	?0.18									?10.3	??-	?2.8	???-	??10.3	??4.6	??2.2	??1.9
					10% upright withered Lingshui Spring agent	????6670	??16.0	????2.9	?0.21	?12.1	?17.5	?3.2									??14.3	??13.7	??5.8	??2.9	??2.7

Three, 16.5% multiple ichthyodin, the interpretation of result of first mixture drug effect

1, result of the test proves, 16.5% multiple ichthyodin, three different disposal dosage of first mixture are respectively 90.7%, 81.7%, 69.3% to the control efficiency of rice seedling blight, find out from subordinate list one, the anti-effect of curing the disease improves along with the increase of dosage, high dose is more remarkable than difference with middle dosage, and remarkable with low dosage ratio heteropole, middle dosage is more remarkable than difference with low dosage.

2, result of the test proves, 16.5% multiple ichthyodin, and the first mixture, protection effect is 81.7～90.7 during every mu of dosage (commodity amount) 6670～10005 grams, so usage amount is more suitable when every mu 8000～10000 gram.

3, result of the test proves, when (dosage is selected the conventional consumption of producing for use) used in 70% thiophanate-methyl and 15% ichthyodin list agent, prevent and treat the damping off effect and be respectively 52%～49%, reduce than amount control efficiency in the mixture, and under the confection dose square one, control efficiency can improve more than 25%, and protection effect obviously improves behind two kinds of medicament compounds.

4, result of the test proves, 16.5% multiple ichthyodin, and the like product 10% upright withered clever ratio of applying on first mixture control rice seedling blight and the market, during equal usage amount, the anti-effect of curing the disease can improve more than 15%.

5, result of the test proves, 16.5% multiple ichthyodin, growth has facilitation to the first mixture to rice seedling, show by the investigation of (subordinate list two) seedling quality, height of seedling, the leaf of the height of confection treatment region, middle dosage water rice sprouts makes, stem is thick, radical, root are long, the fresh weight index all significantly is higher than single-dose agent treatment region, contrast chemicals treatment district.16.5% multiple ichthyodin, the first mixture has strong seedling effect to rice seedling, to the resistance enhancing of disease.

Provide embodiments of the invention as follows:

Compositing formula of the present invention is 1 for containing molecular formula, and the thiophanate-methyl 0.5%～9% of 2-two (3-first carbonyl-2-ghiourea group) benzene contains acetone ichthyodin 8%～20%, and above-mentioned content is the content in the aqua of the present invention.

One of concrete content ratio is that to contain molecular formula be 1, and the thiophanate-methyl 0.5% of 2-two (3-first carbonyl-2-ghiourea group) benzene contains acetone ichthyodin 16%.

Claims (2)

1, a kind of multiple ichthyodin, the first mixture is characterized in that compositing formula is 1 for containing molecular formula, and the thiophanate-methyl 0.5%～9% of 2-two (3-first carbonyl-2-ghiourea group) benzene contains acetone ichthyodin 8%～20%, and above-mentioned content is the content in the aqua of the present invention.

2, according to the multiple ichthyodin described in the claim 1, the first mixture is characterized in that the acetone ichthyodin is applied to prevent and treats the damping off that rice seedling takes place and promotes paddy rice seedling strong sprout.