Claim 1: a synergistic compound for the protection of agricultural crops, comprising at least one component [a], including a formula compound (1) 3-difluoromethane-n - (7-fluoro-1, 1, 3-trimethyl-4-indanil) - 1-methyl-4-pyrylidene chloride, one of which is methyl-ch-8323 -；at least one compound [B] selected from compounds with fungicidal or insecticidal activity that belong to one or more of the following groups of fungicidal and insecticidal compounds: Fungicidal compounds: i) azoles； ii) amino derivatives； iii) strobilurins； iv) specific antioid compounds； v) anilinopyrimidines； vi) benzimidazoles and their analogues； vii) dicarboximides； viii) polyhalogenated fungicides； ix) inducers of acquired systemic resistance (SAR)；x) phenylpyrroles； xi) acylalanines； xii) antiperonosporic compounds； xiii) dithiocarbamates； xiv) arylamidines； xv) phosphoric acid and its derivatives； xvi) copper based copper fungicides； xvii) fungicidal amides； xviii) nitrogenous heterocycles； Insecticidal compounds: xix) neonicotinoids； xx) phenylpyrazoles； xxi) pyrethroids； xxii) carbamates； xxiii) macrolides of a microbial origin； xxiv) insecticidal diamides； xxv) trifluoromethylpyridyl derivatives. Claim 4: The compositions according to one or more of the preceding claims,The formulation compound (1) is characterized as racemic mixture ((1) - RS). Claim 5: the composition according to one or more requirements in 1 to 3, which is characterized in that a formula compound (1) is selected from the following two requirements: one is a mixture concentrated in one counterpart, preferably a mixture concentrated in one counterpart, one is a mixture concentrated in two counterparts, one is a mixture concentrated in one counterpart, and the other is a mixture concentrated in one counterpart in some form ((1) - R) or (1) - s) in two counterparts. Basic purity ( gt； 99.99% by weight).de preferencia el enanti mero R Reivindicaci n 7 Las composiciones de acuerdo con una oms de las reivindicaciones ante
