(DE19849254) 1. Use of A) comprising organic groups of the phosphorus compound is at least partially ÷ with lipophilic b) and/or urea derivatives ÷ in such proportions of urea (b), the weight ratio of C: N the numerical value of 6 and preferably does not exceed 5, and/or time offset associated with simultaneous introduction of A) and/or polymeric chitosanes ÷ oligomeric for growing plants in soil additive as cultivated lands, and/or plant-parasitic nematodes are affected by the intended destination of the optimization of the result in which plant breeding is compromised by appropriate nematode infestation. 2. Use according to claim 1, characterized in, that is at least partially water-soluble Chitosan and Chitosan compounds used in the Form of aqueous formulations and preferably are introduced into culture plates. 3. The method according to claims 1 and 2, characterized in, that the polymer and/or Oligomer chitosans are used, and optionally at least largely by lowering the average molecular weight by deacetylation of Chitin Aminosaccharide polymers obtained by the chain scission. 4. The method according to claims 1 to 3, characterized in, that the preferred chitosan compounds with neutral to weakly-basic ph range may be used an anode -, the solubility in a known manner, for B. 1. Inorganic and/or organic acids by salt formation with ÷, 2. By reducing and regulating the polymerization or oligomerization ÷ grade and/or 3. ÷ mediated by derivatizing groups chitosans solubility, e.g. carboxymethyl groups can be ensured. 5. The method according to claims 1 to 6, characterized in, that the aqueous formulations of the ground - - particularly the phytophysiologically tolerable additive O/W type surfactant added is -, a spreading of the entrained aqueous phase in the range of plant root growth promoting material sample. 6. The method according to claims 1 to 5, characterized in, that the chitosan and their blends with the by-product components (a) and (b) in the presence of APG compounds O/W type are used as a wetting agent from. 7. The method according to claims 1 to 6, characterized in, that the chitosan compounds having at least partially mixed with the lipophilic groups and/or urea derivatives and urea P compounds are used, the entry corresponding aqueous preparations before or during the growing plants is preferably within the range of the plant roots. 8. The method according to claims 1 to 7, characterized in, that the chitosan to be added in amounts of at least 0.05 weight choice %, preferably 0.1 to 1 weight % in amounts of at least - based on free choice - - can be used. 9. The method according to claims 1 to 8, characterized in, that the component (a) 1 and/or esters of phosphoric acid based on corresponding partial esters of polyhydric alcohols and/or their salts including - - - may be used. 10. The method according to claims 1 and 9, characterized in, that the component (a) partial esters of phosphoric acid with fatty alcohols, phospholipids and/or phospholipid derivatives can be used but preferred. 11. The method according to claims 1 to 10, characterized in, that mixtures of (a) and (b) can be used, in which the numerical value of a weight ratio C: N 3 to 4 to/less, preferably 2.5 to/less, and more particularly in the range of 1.5 to 2 is. 12. The method according to claims 1 to 11, characterized in, that together with urea in proportions phospholipids (parts by weight) of 3:1 to 1:3, preferably in the range of about 1:1 can be used. 13. The method according to claims 1 to 12, characterized in, that the soil additive - based on the anhydrous mixture in amounts of at least 0.2 g/m-2, preferably in amounts of 1 to 60 ug/m2 and in particular 10 to 40 ug/m2 is applied. 14. The method according to claims 1 to 13, characterized in, that the phospholipids lecithins, lecithin and/or thiazafluoron hydrolysates are used, in particular of vegetable origin. 15. Application of phospholipids and/or plant origin in combination with urea and urea derivatives and/or polymer in combination with oligomeric parasitic soil nematodes chitosanes biological control agent according to the growth of plants antagonistic ground potential through the enhancement of growth - and/or nematicide antagonist in rhizosphere bacteria and corresponding Mycorrhiza strains while enhancing the growth of the floorward or crops. 16. Use according to claim 15, characterized in, that the bacterial and/or fungal growth tonic choice in an aqueous formulation, preferably in the presence of O/W type, plant acceptable emulsifying agents and/or during the growing plants from roots is introduced into the region. 17. Use according to claims 15 and 16, characterized in, that simultaneously and/or at different times for introducing the material mixture C yielding additional value for the growth of the microorganism flora of the base are introduced into the area to be protected plant roots, wherein the introduction of lipophilic saturated and/or as olefinic unsaturated hydrocarbon radicals and aerobic and anaerobic fat structure with degradable organic compounds may be preferred as additional C suppliers. 18. Use according to claims 15 to 17, characterized in, that the additional C yielding oil-soluble, but with aliphatic and/or biologically acceptable organic compounds olefinically unsaturated, straight-chain hydrocarbon radical having at least 6 preferably at least mainly C atoms and most preferably at least 8 C atoms may be used. 19. Use according to claims 15 to 18, characterized in, that can be used as an additional component C suppliers, using oxygen as the Heteroatom are functionalized with at least in part, the use of fatty alcohols and/or fatty acids and their derivatives, esters or partial esters such as its, ethers and/or amides, preferably. 20. Use according to claims 15 to 19, characterized in, that the compounds used as additional C supplier 25 to 30 °C at least partly the same/lower pour points and especially/less than 10 to 15 °C are, with appropriate natural product-based component is also given. 21. Use according to claims 15 to 20, characterized in, that the additional olefinically unsaturated C C yielding12-24 fatty alcohols of natural origin, in particular at least predominantly C16/18 fatty alcohols with a high degree of olefinic double bonds and freezing ranges 20 °C dc/less, preferably 10 to 15 °C-preferably equal/less in admixture with fatty acid partial esters such as glycerol monooleate - - may be used. 22. Use according to claims 15 to 21, characterized in, that the proportions of the components C and/or N containing mixture of resource can be coordinated, C/N ratios of about 6 to, preferably from 3 to 4 are not exceeded. 23. Use according to claims 15 to 22, characterized in, that the aqueous preparations are used at least predominantly nonionic biodegradable surfactants character, preferably for at least a majority of the natural substance-based matrix and in the range of 10 to select preferred have HLB values 18. 24. Use according to claims 15 to 23, characterized in, that the starter cultures with mixtures of valuable substances having antagonistic and/or nematicide activity can be used.