Environmental Aspects and Economic Assessment Chemicalization Agriculture under Agro-Ecosystems

This article highlights the results of the study of environmental problems such as soil contamination in the application of fertilizers and efficiency of resource-saving technology of soybean cultivation with elements of intensification of agriculture is the optimum rate of fertilizer in increasing the productivity of agro-ecosystems. Results of studying of chemicalixation ecological aspect of agriculture and cultivation effectiveness of resource-saving technology of soy at optimum norms of application of mineral fertilizers for agroecosystem efficiency increase are given in this article. The comparative assessment of reasoning of the nutritious mode of the soil and identification of ecological consequences of application of mineral fertilizers at traditional and resource-saving technology of cultivation of soy is given. The analysis of crop provision with nutrients at various options of using mineral fertilizers is given. The content of active forms of phosphorus and nitrogen on the soil horizonsis is determined by phases of plant development at various options of doses of fertilizers and technologies of soy cultivation. At traditional technology of soy cultivation, options without fertilizers and application of doses of the prolonged use of N60P180K90 according to the recommendation of the "Vit" agrocompany are considered. At resource-saving technology, two options with application of mineral fertilizers in a dose - P60K30 and - N30 P60K30 are also tested. At traditional technology it is revealed that application of the increased norms of N60P180K90 leads to increase of soil impurity level caused by heavy metals and decrease in efficiency of the cultivated soy culture. Value of resource-saving technology in rational use of bioenergetic potential of an agroecosystem is revealed and elements of intensive technology with lower norms of mineral fertilizers for increase of efficiency of soy agroecosystem are chosen. It is proved that mineral fertilizers are one of the main factors of stabilization of soil ecological condition, providing optimizations of the nutritious mode and increase of soy efficiency at resource-saving technology of cultivation in the conditions of irrigation in the southeast of Kazakhstan. Application of evidence-based resource-saving methods with elements of ecologically safe intensive technology allows to quickly maintain stability of agroecosystem