Fungus medicine composition containing dithiocarbamate type germicides and biocontrol fungi, preparation containing fungus medicine composition, application of fungus medicine composition and application of preparation

Abstract

The invention discloses a fungicide composition containing dithiocarbamate fungicides and biocontrol bacteria, a preparation and application thereof, belonging to the fields of plant protection and pesticide science. The bacterial drug composition is composed of a dithiocarbamate fungicide and a biocontrol bacterial powder with a mass ratio of 1-10:1-10, and the number of viable bacteria in the bacterial powder is not less than 10 6 cfu / g; wherein the biocontrol bacteria is preferably Bacillus amyloliquefaciens ZY-9-13, preservation number: CGMCC No.6162. Dithiocarbamate fungicides are multi-action site inhibitors, and are not easy to produce resistance. When used in conjunction with Bacillus amyloliquefaciens, they have excellent control effects on tobacco root-knot nematode and tobacco black shank, and the control effect is remarkable It is better than using a single dithiocarbamate fungicide or Bacillus amyloliquefaciens biocontrol fungicide, and can delay the emergence of chemical drug resistance, and is especially suitable for the control of tobacco black shank in the field.

Description

technical field [0001] The invention relates to a fungicide composition containing dithiocarbamate fungicides and biocontrol bacteria, as well as a preparation containing the fungicide composition and its application, belonging to the fields of plant protection and pesticide science. 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 Do...

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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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