Composition comprising benzamide bactericides, dinitroaniline bactericides, dithiocarbamate bactericides and biocontrol bacteria, and preparations and application of composition

Abstract

The invention discloses a composition, preparation and application containing benzamides, dinitroanilines, dithiocarbamate fungicides and biocontrol bacteria, and belongs to the fields of plant protection and pesticide science. The composition is composed of benzamide fungicides, dinitroaniline fungicides, dithiocarbamate fungicides and biocontrol fungicides with a mass ratio of 1 to 10:1 to 10:1 to 10:1 to 10. Composition of bacterial powder, the number of viable bacteria in the bacterial powder is not less than 10 6 cfu / g. The biocontrol bacterium is preferably Bacillus amyloliquefaciens ZY‑9‑13, with a preservation number of CGMCC No.6162. Fluopyram and benzamid of benzamides can respectively achieve bactericidal effect by acting on spectrin in the cell membrane and inhibiting the assembly of mitochondrial β-tubulin, and fluazinam of dinitroaniline can make pathogenic bacteria respiration The uncoupling of oxidative phosphorylation hinders energy synthesis. Dithiocarbamate fungicides are multi-action site inhibitors. These three types of fungicides are used in conjunction with Bacillus amyloliquefaciens to treat tobacco root-knot nematode and tobacco black shank. disease has excellent control effect.

Description

technical field [0001] The invention relates to a composition containing benzamides, dinitroanilines, dithiocarbamate fungicides and biocontrol bacteria, and also relates to preparations and applications of the composition, belonging to plant protection and field of pesticides. Background technique [0002] Tobacco black shank (Tobacco black shank) is a worldwide devastating soil-borne disease, and its pathogen is Phytophthora parasitica var nicotianae (Breda de Hann) Tuker]. Phytophthora nicotianae can infect tobacco plants from the seedling stage to the adult plant stage, mainly infecting tobacco stems, and can also infect leaves. Tobacco black shank forms water-soaked black spots at the base of the stem, the cortical tissue becomes black and depressed, and spreads up and down along the stem, and the pith is dark brown and necrotic and shrinks into a disc shape (Wan Weixiao, He Xiaobing, Qu Pingzhi, et al. .Tobacco black shank early prevention technology[J].Plant Doctor,...

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Problems solved by technology

For example, the combination of yellow blue-shaped bacteria and manganese zinc can control wheat scab (Mao Xueqin, Peng Zhirong, Qiu Haiping, etc. Fermentation conditions of biocontrol strain MT-06 and the control effect of compound fungicides on wheat scab[ J]. Zhejiang Agricultural Sciences, 2013 (07): 821-824), the combination of Bacillus subtilis and tebuconazole can prevent and treat broad bean wilt (Chen Zhiyi, Ren Haiying, Liu Yongfeng, etc. Tebuconazole and Bacillus subtilis synergistically control broad bean Fusarium wilt and its synergistic mechanism [J]. Journal of Pesticide Science, 2002 (4): 40-44), Bacillus subtilis, difenoconazole, azoxystrobin, etc. can control apple ring spot (Zhou Han .Coordinated control of postharvest ring blight by fungicides and biocontrol bacteria and its mechanism[D].Anhui Agricultural University, 2009), Jinggangmycin and Bacillus subtilis synergistically control rice sheath blight (Chen Zhiyi, Liu Yongfeng, Lu Fan. Jinggangmycin and biocontrol bacteria Bs-916 synergistic disease control and synergistic mechanism[J]. Plant Protection Journal, 2003, 30(4):429-434.), etc., but the control target of the combination of the above bacteria and drugs Phytophthora nicotae

The invention patent with the publication number CN104381303A discloses a fungal drug composition for preventing and treating fungal diseases, which is composed of riboflavin and Bacillus subtilis Tpb55 bacterial powder according to the mass ratio of 1.21~2.34:97.96~98.79. Applying Bacillus subtilis Tpb55 bacterial powder, the bacterial drug composition can significantly improve the control effect of tobacco black shank, red spot disease and other diseases, and enhance the disease resistance of plants, but it can only achieve the same control effect as chemical agents

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