1. A method of preventing soil erosion, wherein the nonionic guar and / or guar cationic applied to the soil or introduced into pochvu.2. A method according to Claim. 1, wherein the cationic guar is obtained by using quaternary ammonium salts as cationic esterifying agentov.3. . A method according to claim 2, wherein the quaternary ammonium salt is selected from the group consisting of: chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 2,3-epoxypropyltrimethylammonium chloride, diallyldimethylammonium chloride vinilbenzoltrimetilammoniya chloride, trimethylammonium ethyl methacrylate chloride, methacrylamidopropyltrimethylammonium chloride and tetraalkylammonium. 4. A method according to any one of claims. 1-3, wherein the cationic guars selected from the group consisting of: - gidroksialkilguarov cationic, such as cationic gidroksietilguar (GEguar), cationic hydroxypropyl guar (GPguar) cationic gidroksibutilguar (GBguar) u karboksialkilguarov cationic, including cationic carboxymethyl ( KMguar) alkilkarboksiguarov cationic, such as cationic karboksipropilguar (KPguar) and cationic karboksibutilguar (KBguar), carboxymethylhydroxypropylguar (KMGPguar) .5. A method according to any one of claims. 1-3, wherein the degree of hydroxyalkylation cationic guars in the range from 0 to 3.6. A method according to any one of claims. 1-3, wherein the degree of substitution of the cationic guars in the range of 0.005 to 3.7. A method according to any one of claims. 1-3, wherein charge density of cationic guars in the range from 0.1 to 2 mEq / D.8. A method according to any one of claims. 1-3, wherein the cationic guars have an average molecular weight of from about 100,000 daltons to 3,500,000 dalton.9. A method according to any one of claims. 1-3, wherein the dosage of the nonionic and / or cationic guar is in the range from 0.1 to 100 kg / ha pochvy.10.1. Способ предотвращения эрозии почв, в котором неионный гуар и/или катионный гуар наносят на почву или вносят в по
