阅读说明：本技术 一种水稻环保农药及其应用 (Environment-friendly pesticide for rice and application thereof ) 是由 高杜娟 唐善军 吕艳梅 彭锐 周昆 危家文 周斌 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种水稻环保农药及其应用,属于复配农药技术领域。所述水稻环保农药包含重量比为1:5-7的啶菌恶唑和烯唑醇,其组分原料中还可加入井冈霉素、丁氟螨酯和芸苔素内酯。本发明农药防效高、持效期长,可减少用药量,减轻了环境污染,降低了防治成本；此外该农药毒性低,对环境相容性较好,且不易产生抗药性。(The invention discloses an environment-friendly pesticide for rice and application thereof, and belongs to the technical field of compound pesticides. The rice environment-friendly pesticide comprises pyrisoxazole and diniconazole in a weight ratio of 1:5-7, and validamycin, cyflumetofen and brassinolide can be added into the raw materials of the rice environment-friendly pesticide. The pesticide has high control effect and long lasting period, can reduce the dosage, reduce the environmental pollution and reduce the control cost; in addition, the pesticide has low toxicity and good environmental compatibility, and is not easy to generate drug resistance.)

1. An environment-friendly pesticide for rice, which is characterized in that: which comprises pyrisoxazole and diniconazole in a weight ratio of 1: 5-7.

2. The environment-friendly pesticide for rice as claimed in claim 1, wherein: the weight ratio of the pyrisoxazole to the diniconazole is 1: 6.

3. The environment-friendly pesticide for rice as claimed in claim 1, wherein: the raw materials of the composition also comprise validamycin, and the weight ratio of the pyrisoxazole to the diniconazole to the validamycin is 1:5-7: 7-3.

4. The environment-friendly pesticide for rice as claimed in claim 3, wherein: the weight ratio of the pyrisoxazole to the diniconazole to the validamycin is 1:6: 5.

5. The environment-friendly pesticide for rice as claimed in claim 3, wherein: the raw materials of the composition also comprise cyflumetofen and brassinolide, wherein the weight ratio of the pyrisoxazole to the diniconazole to the validamycin to the cyflumetofen to the brassinolide is 1:5-7:7-3:0.1-0.4: 0.001-0.005.

6. The environment-friendly pesticide for rice as claimed in claim 5, wherein: the weight ratio of the pyrisoxazole to the diniconazole to the validamycin to the cyflumetofen to the brassinolide is 1:6:5:0.2: 0.003.

7. The environment-friendly pesticide for rice as claimed in any one of claims 1 to 6, wherein: it also contains non-active ingredient auxiliary materials acceptable in pesticide.

8. The environment-friendly pesticide for rice as claimed in claim 7, which is prepared into 25% emulsifiable concentrate.

9. The use of the environment-friendly pesticide for rice as claimed in any one of claims 1 to 6 for preventing and treating rice sheath blight disease.

Technical Field

The invention belongs to the field of pesticides, particularly belongs to the field of compound pesticides, and particularly relates to an environment-friendly pesticide for rice and application thereof.

Background

Diniconazole is a triazole broad-spectrum systemic fungicide with extremely high activity, has the effects of protection, treatment and eradication, can inhibit demethylation in the biosynthesis of ergosterol of fungi, thereby causing the death of the fungi, and is particularly high-efficient for ascomycetes and basidiomycetes, such as powdery mildew, rust fungi, ustilago, cladosporium cucumerinum and the like; in addition, it is effective on Neurospora, Mycosphaerella, Sclerotinia sclerotiorum, Penicillium, Rhizoctonia, black rot fungus, rust fungus of Camellia sinensis, etc.

Validamycin is a low-toxicity bactericide, has strong systemic property, is easily absorbed by bacterial cells and quickly conducted in the bacterial cells, interferes and inhibits the growth and development of the bacterial cells, can be used for preventing and treating rice sheath blight and has good prevention effect. However, because the aminoglycoside antibiotics are easily degraded in natural environment, the duration of the drug effect is only about 7 days, the duration is short, repeated application is needed, and the prevention and treatment cost is increased.

The pyrisoxazole is a novel high-efficiency bactericide with broad spectrum and outstanding in-vitro bactericidal activity, has protection and treatment effects on diseases, has good systemic bactericidal effect, has a different action mechanism from the currently widely used bactericide, and does not have cross resistance. The pyrisoxazole has strong inhibiting effect on wheat root rot, gibberellic disease, holotrichia, rhizoctonia solani, corn microsporum, head smut and the like; the composition has the effects of preventing and treating activity and systemic conduction, can inhibit the hypha growth spore outgrowth and the bud canal elongation of botrytis cinerea, and has excellent control effect on botrytis cinerea of crops such as vegetables, fruit trees and the like.

In the rice production process, disease control is related to the healthy growth of rice. But the single-dose pesticide is repeatedly used for a long time, so that harmful fungi are rapidly selected to generate drug resistance. In order to delay the rapid generation of drug resistance of harmful fungi, different active ingredients are usually compounded for prevention and treatment, and the generation of the drug resistance of the harmful fungi can be generally delayed, so that the repeated application amount of the drugs is reduced, and the prevention and treatment cost is reduced. However, the compounding of different active ingredients is mostly additive effect, the compounding with real synergistic effect is very little, especially the compounding with very obvious synergistic effect and very high co-toxicity coefficient is less. In addition, with the enhancement of environmental protection concept and the implementation of sustainable development strategy, high efficiency, low toxicity, high activity and low residue have become the inevitable trend of pesticide development. Therefore, how to improve the control effect of the pesticide and delay the rapid generation of the drug resistance of harmful fungi, thereby reducing the application amount of the pesticide and prolonging the effective period, and how to reduce the pesticide residue and pollution becomes a problem to be solved urgently by modern pesticides.

Through a large number of researches and experiments, the inventor discovers that the pyrisoxazole and diniconazole are compounded for preventing and treating rice sheath blight, the synergistic effect is obvious, the environmental compatibility is good, the application amount of pesticides is greatly reduced, the generation of drug resistance is delayed, and the application prospect is good.

Disclosure of Invention

One of the objects of the present invention is: solves the problems of reduced pesticide control effect, short lasting period and large dosage caused by the rapid generation of pesticide resistance of harmful fungi due to the repeated use of a single pesticide, thereby providing the rice environment-friendly pesticide with good control effect, long lasting period and small pollution.

In order to achieve the purpose, the invention adopts the following technical scheme:

an environment-friendly pesticide for rice comprises pyrisoxazole and diniconazole in a weight ratio of 1:5-7, preferably 1: 6.

In order to improve the control effect and delay the generation of drug resistance, the environment-friendly pesticide composition for rice comprises validamycin, wherein the weight ratio of the pyrisoxazole to the diniconazole to the validamycin is 1:5-7:7-3, and the preferable weight ratio is 1:6: 5.

In order to expand the control range, improve the control effect, delay the generation of drug resistance and reduce the influence of drugs on rice production, the rice environment-friendly pesticide further comprises cyflumetofen and brassinolide, wherein the weight ratio of the pyrisoxazole to the diniconazole to the validamycin to the cyflumetofen to the brassinolide is 1:5-7:7-3:0.1-0.4:0.001-0.005, and the preferable weight ratio is 1:6:5:0.2: 0.003.

Preferably, the rice environment-friendly pesticide can be mixed with non-active ingredient auxiliary materials acceptable in pesticides such as a solvent, an emulsifier, a surfactant and the like to prepare an emulsifiable concentrate.

The second purpose of the invention is that: provides an application of the rice environmental-friendly pesticide in rice sheath blight disease.

Compared with the prior art, the invention has the beneficial effects that:

1) the pesticide of the invention compounds diniconazole and pyrisoxazole, and the two raw medicines have different action mechanisms and effective sites and have stronger systemic bactericidal performance. Tests prove that the two raw medicines have obvious synergistic effect on diniconazole after being compounded, the lasting period of the diniconazole is prolonged, and the problems of reduced control effect and increased dosage caused by drug resistance of harmful fungi due to repeated use of the diniconazole are solved;

2) according to the invention, the validamycin is added into the diniconazole and pyrisoxazole compound pesticide, the synergistic effect is more obvious after the three raw medicines are compounded, and the lasting period is longer, so that the compounding effect is more prominent;

3) according to the invention, the cyflumetofen and the brassinolide are added into the compound pesticide, so that the synergistic effect is improved, the duration is prolonged, the rice pest control effect is improved, and the yield of rice is increased after the five components are compounded;

4) the pesticide has high control effect and long lasting period, so the dosage can be reduced, the environmental pollution is reduced, and the control cost is reduced; in addition, the pesticide has low toxicity and good environmental compatibility, and is not easy to generate drug resistance.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to examples. It should be understood that the embodiments described below are only for illustrating the present invention and are not to be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

In the following examples, the raw materials, adjuvants, etc. are commercially available products or products obtained by conventional methods.