Background technology
Fenamidone chemical name: (S)-5-methyl-2-methyl mercapto-5-phenyl-3-anilino--3,5-glyoxalidine-4-ketone, structural formula is
, belong to imidazolone type, white powdery solid, fusing point is 137 DEG C, and density is 1.285, vapour pressure 3.4 × 10-7Pa(25 DEG C), solvability (20 DEG C): 7.8mg/l in water.Mitochondrial respiratory inhibitor.Have tag, permeate, systemic activity, there is good protection and therapeutic activity.Control, by the microbial downy mildew of Oomycete cause of disease, epidemic disease (comprising early blight and late blight) etc., also has good activity to fruit tree black spot.
Ningnanmycin belongs to low toxicity Antibiotics bactericide, the innovation biopesticide succeeded in developing by Chengdu Inst. of Biology, Chinese Academy of Sciences, tobacco mosaic virus disease, tomato virus disease, pepper virus disease, rice seedling blight, root rot, stripe disease, alternaria leaf spot of apple, powdery mildew of cucumber achieve registration, this external control sclerotinia rot of colza, peronophythora litchi, also large scale application in the multiple diseases such as other crop virosis, stem rot, blight dis-ease, powdery mildew.
Above two kinds of medicines are after long-term being used alone, plant germ is all easily made to develop immunity to drugs, cause the problems such as dosage increasing, preventive effect reduction, lasting period shortening, the Reusability of agricultural chemicals causes the degradation rate of agricultural chemicals in soil to decline, and is unfavorable for environment sustainable development very much.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of cream preparation of bactericidal composition.In bactericidal composition of the present invention, effective active composition Fenamidone, the mutual mixture of Ningnanmycin can not produce conflict; Compare single component and have synergistic effect, can fungicidal spectrum be expanded, greatly improve the preventive effect to disease; Drug effect is more lasting, and quick-acting compares single dose also very big raising; Delayed drug-fast generation, low-residual, easily degraded after the lasting period in soil, and consumption is few, more friendly to environment, met the requirement of agricultural production; To crop safety.The present composition to the disease of crops such as control agriculture vegetables, cereal crop, fruit tree etc., especially to preventing and treating downy mildew, epidemic disease, powdery mildew have special efficacy.
The cream preparation of a kind of bactericidal composition of the present invention is realized by following technical scheme: the active ingredient of described bactericidal composition comprises: Fenamidone, Ningnanmycin.
Described Fenamidone, the part by weight of Ningnanmycin are 1-20:1-20.
The part by weight of Fenamidone, Ningnanmycin is 5-10:1:5.
Preferably, the part by weight of Fenamidone, Ningnanmycin is 7:3.
Fenamidone in bactericidal composition, Ningnanmycin account for 60-90 part of bactericidal composition gross mass, also comprise emulsifier 3-20 part, solvent 20-55 part.
Fenamidone, Ningnanmycin are dissolved in a solvent, adds emulsifier, be uniformly mixed the cream preparation of i.e. this bactericidal composition obtained.
Described emulsifier is aliphatic acid polyethenoxy base ester.
Described solvent is isopropyl alcohol.
The cream preparation of this bactericidal composition is for preventing and treating downy mildew, epidemic disease, the powdery mildew disease of the crops such as agriculture vegetables, cereal crop, fruit tree.
Beneficial effect of the present invention:
(1) present composition effective active composition Fenamidone, the mutual mixture of both Ningnanmycins can not produce conflict;
(2) present composition compares single component synergistic effect, can expand fungicidal spectrum, greatly improves the preventive effect to disease;
(3) drug effect is more lasting, and quick-acting compares single dose also very big raising;
(4) delay drug-fast generation, decreased agricultural chemicals Reusability number of times, reduced Pesticide use amount, reduce the use cost of agricultural chemicals;
(5) low-residual, easily degraded after the lasting period in soil, and consumption is few, more friendly to environment, met the requirement of agricultural production;
(6) present composition is to the disease of crops such as control agriculture vegetables, cereal crop, fruit tree etc., especially to preventing and treating downy mildew, epidemic disease, powdery mildew have special efficacy.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
The cream preparation of a kind of bactericidal composition of the present invention, containing Fenamidone 56 parts, Ningnanmycin 24 parts, emulsifier 12 parts, solvent 40 parts by weight.
Fenamidone, Ningnanmycin are dissolved in a solvent, adds emulsifier, be uniformly mixed the cream preparation of i.e. this bactericidal composition obtained.
Described emulsifier is aliphatic acid polyethenoxy base ester.
Described solvent is isopropyl alcohol.
The cream preparation of this bactericidal composition is for preventing and treating downy mildew, epidemic disease, the powdery mildew disease of the crops such as agriculture vegetables, cereal crop, fruit tree.
Embodiment 2
The cream preparation of a kind of bactericidal composition of the present invention, containing Fenamidone 42 parts, Ningnanmycin 18 parts, emulsifier 6 parts, solvent 25 parts by weight.
Fenamidone, Ningnanmycin are dissolved in a solvent, adds emulsifier, be uniformly mixed the cream preparation of i.e. this bactericidal composition obtained.
Described emulsifier is aliphatic acid polyethenoxy base ester.
Described solvent is isopropyl alcohol.
The cream preparation of this bactericidal composition is for preventing and treating downy mildew, epidemic disease, the powdery mildew disease of the crops such as agriculture vegetables, cereal crop, fruit tree.
Embodiment 3
The cream preparation of a kind of bactericidal composition of the present invention, containing Fenamidone 45 parts, Ningnanmycin 45 parts, emulsifier 20 parts, solvent 55 parts by weight.
Fenamidone, Ningnanmycin are dissolved in a solvent, adds emulsifier, be uniformly mixed the cream preparation of i.e. this bactericidal composition obtained.
Described emulsifier is aliphatic acid polyethenoxy base ester.
Described solvent is isopropyl alcohol.
The cream preparation of this bactericidal composition is for preventing and treating downy mildew, epidemic disease, the powdery mildew disease of the crops such as agriculture vegetables, cereal crop, fruit tree.
Embodiment 4
Field trial measures the control efficiency to downy mildew of garpe
Test dispenser twice altogether, check plot spray equivalent clear water.Spouting liquid is 45-60kg/667m
2, continuous dispenser twice, 10 days intervals, sprays application to crop complete stool uniformly by liquid.
The green house selecting occurring degree medium is that experimental field soil fertility is medium, and irrigation and drainage are convenient.Adopt bilinear sampling method, 5 points are got in every community, look into 5 caves at often, and during investigation, 2 blades in the fixing middle part of every strain carry out fixed point inspection.
Sick leaf rate %: random selecting 100 blades, sick leaf accounts for the percentage of total leaf number.
The sick leaf recruitment of amount-experimental group that the sick leaf of preventive effect %:(control group increases) the sick leaf recruitment * 100 of/control group.
Poisoning is investigated
Whether after dispenser, continuous 7d estimates medicament has poisoning to crop.
Field control effectiveness test result of the test
Preventive effect investigation in 10 days after 1st medicine, 10 days and preventive effect investigation in 20 days after 2 medicines.
The effect of downy mildew of garpe prevented and treated by table 1
。
Table 1 can be found out, the effect that embodiment 1, embodiment 2 prevent and treat downy mildew of garpe is very remarkable.Duration of test is observed, and it, to grape safety, does not produce harmful effect.
Embodiment 5
Field trial measures control efficiency to paddy rice powdery mildew, experimental procedure, prevents and treats parameter, poisoning investigation with described in embodiment 4,
The effect of paddy rice powdery mildew prevented and treated by table 2
。
Table 2 can be found out, the effect that embodiment 1, embodiment 2 prevent and treat paddy rice powdery mildew is very remarkable.Duration of test is observed, and it does not produce harmful effect to rice safety.
In sum, the cream preparation of this bactericidal composition of the present invention for preventing and treating the downy mildew of the crops such as agriculture vegetables, cereal crop, fruit tree, epidemic disease, powdery mildew disease all have good control efficiency, especially the control efficiency of downy mildew and powdery mildew is given prominence to, and it is to Target crops safety.Compared with single dose, it is long that bactericidal composition of the present invention has the lasting period, easy to use, not easily produces the advantage of poisoning.