Compound pesticide for preventing and treating wheat scab

Abstract

The invention discloses a compound pesticide for preventing and treating wheat scab. The compound pesticide is prepared from phenamacril, magnesium-containing chlorophyllin salt, bacteriochlorophyll,a selenized carrageenan solution and water, and the mass ratio of the phenamacril, the magnesium-containing chlorophyllin salt, the bacteriochlorophyll, the selenized carrageenan solution and the water is (20-30):(1-2):(1.5-3):(5-20):(50-70). According to the formula for preventing and treating the wheat scab, the effect of preventing and treating the wheat scab can be remarkably improved; the drug resistance of the Fusarium graminearum to the phenamacril is greatly reduced; nutrient elements selenium and magnesium can be provided for growth of wheat, and the bacteriochlorophyll also promotesgrowth of the wheat. Compared with a wheat block field without the compound pesticide, in the same growth environment, a wheat block field utilizing the compound pesticide achieves the growth period shortened by about 10 days, and the average wheat yield increased by 50-100 kg per mu.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a compound pesticide for preventing and treating wheat scab. Background technique [0002] Wheat head blight, also known as wheat ear blight, rotten wheat head, red wheat head, mainly causes seedling rot, ear rot, stem base rot, stem rot and ear rot. Severe ear rot, ear rot, when the wheat blooms, water-soaked light brown spots appear on the spikelets and glumes at first, and gradually expand to the entire spikelets, the spikelets are withered and yellow, and when the humidity is high, pink gelatinous spots appear on the diseased spots In the later stage, there will be dense blue-black small particles on it. When touched by hand, it will feel raised and cannot be wiped off. The grains are shriveled and accompanied by white to pink mold. After the onset of spikelets, it will slowly expand to the cob , the diseased part is withered and brown, so that the spikelets above the dam...

AI Technical Summary

Problems solved by technology

Wheat head blight is mostly caused by a variety of Fusarium, such as Fusarium graminearum, Fusarium oats, Fusarium moniliforme, etc., all belong to the subphylum Deuteromycotina, and the dominant species is Fusarium graminearum. In addition to surviving the summer on the body, it also survives the winter in saprophytic life in various crop residues such as rice, corn, and cotton. During the poplar flowering period, the germs are spread by air currents, wind and rain, and splash on the withered anthers of the flower to germinate, live a saprophytic life, and then infect the spikelets. A few days later, a large amount of pink mold layer will be produced. The conidiospores formed by rotting have little effect on the re-infection of Honda, but they have a greater effect on the adjacent late wheat. Wheat production is severely reduced and toxins can accumulate in the grains, seriously affecting the health of humans or livestock

[0003] Although there are many pesticides currently used to prevent and control wheat head blight, the active ingredients are mainly carbendazim, prochloraz, triadimefon, tebuconazole, benzaconazole EC, cyclostrobin, etc. Chemicals usually produce resistance to pesticides, and long-term use of these pesticides will cause pesticide residues and accumulation, resulting in certain environmental pollution. Therefore, at this stage, there is a lack of effective control of wheat scab that is not harmful to human health and the environment. drug