Trifluoro-pyrimidine amide-containing nematicidal compound

The invention relates to a trifluoro-pyrimidine amide-containing nematicidal compound. The compound comprises an effective ingredient A, an effective ingredient B and a pesticide preparation auxiliary ingredient, wherein trifluoro-pyrimidine amide is used as the effective ingredient A; one of amino-oligosaccharin or chitosan is selected as the effective ingredient B; the weight ratio of effective ingredient A to effective ingredient B is (50-1) to (1-50); the total content of the effective ingredients is 0.5%-80% of the total weight of the compound. The compound can be prepared into the agriculturally acceptable dosage forms, such as, emulsifiable concentrate, water dispersible granule and water emulsion. The trifluoro-pyrimidine amide-containing nematicidal compound is reasonable in components and has an excellent effect for preventing and treating underground nematode of forest and industrial crops, such as, grain crops, vegetables and fruit trees; compared with the effect for preventing and treating the underground nematode of a single preparation, the effect of the compound has an obvious synergic effect for killing nematode; the dosage is reduced; the pesticide residue is reduced; the pesticide service life is prolonged; the generation of pest drug tolerance is delayed; the safety to the crops is high; the crop stress resistance is obviously increased; the yield and quality are increased.