In the article on the example of book of fields history discussed some problems of organization storage of multidimensional data in a GIS. On the base of analysis for data structure possible options is obtained that the most effective treatment is an option to store all data for Many Years in a single topic, using as an object of design " agricultural field-year"

The adaptive strategy of utilization of agricultural land-reclamation complex of Belarus was offered on the basis of generalization of results of scientific studies.Its objective lies in maximum enhancement of land-reclamation, which can be achieved by rationalized adjustment of costs on maintenance works to the level of intensiveness of agricultural production on reclaimed lands.

Technical state assessment on the Republic’s land-reclamation systems control structures is given on the ground of which a certain conclusion was drawn. It states that a number of structures are in emergency condition and require immediate decisions about the reconstruction to be made. The typical deformations and defects which do not let the structures function properly are given as an example; the criteria and classification of their maintainability are also listed. The unit costs of the maintenance works on the control structures in Mogilev, Grodno and Vitebsk regions exceed the harvest payback limits on the reclamation projects, so their reparation justified, one has to take into account the necessity of safe transportation and the arrangement of the fire-prevention and recreation measures.

The methodological principles of using the drainage rates as the controlling network of the hydro land reclaiming systems in humid regions is considered. The estimation of the drainage rate’s parameters and the method of increasing its efficiency (with the help of special filter elements) for extending the hydrological influence of the shallow laying drain.

He technologies of obtaining activated water solutions and those of their application in the drop irrigation systems are considered in the article. The optimal proportions of activated water components necessary for receiving constant vegetable harvests are offered.

The results of the comprehensive analysis concerning the influence of water saturation of concrete upon its strength properties and propagation velocity of ultrasonic waves at above-zero and below-zero temperatures are represented in the article. The correlation between the ultrasonic waves velocity changes in concrete and moisture at above-zero temperatures was established. This makes it possible to solve the problem of timely year-round instrumental inspection of meliorative hydraulic structures in order to prevent some emergency situations.

After analyzing the drainage outlet project materials and the results of the field tests of various outlets constructions, a new lightweight polyethylene collecting drainage outlet is introduced (taking into account the revealed shortcomings of previous models). The Standard Design of the Drainage Outlet has been worked out and brought into service. The outlet is light, easy to work with, and it does not require special equipment to construct it. The reliability of a structure is ensured by the use of high-strength polymeric materials used in construction of the components. The unit value appears to be $25 less than the previous models and the working efficiency while constructing rises by 1.7 times. Economic rate equals $750-1250 per every 100 ha reconstructed with the developed lightweight drainage outlets.

This article gives some approaches to execution of maintenance works in the open drainage network. The alternative technological schemes of the reparation works to be carried out are suggested. They ensure the maintenance cost-decrease, further technical service of the open network, and the growth of the ecological sustainability of the developed land. The schemes are also ecologically and economically compared to the reparation manufacturing scheme which is widely used today and considered to be the basic variant.

The results of the analysis concerning the effectiveness of draining of badly pervious mineral soil with the help of horizontal drainage in Postavy and Braslav districts of Vitebsk region and various methods of loess loam draining in Mstsislav district of Mogilev region on dish relief are given in the article. The positive role of drainage on the acquitard soils with plain relief is noted. The periodicity of drainage effectiveness and a great influence of water permeability of drainage filling are established. Most effective draining of loess loam on dish relief is reached on the areas which were drained using the solid and punctate filled selective sand-gravel drainage of separate drains to a plough-layer level. In case of >0.005 surface slope it is recommended to limit the usage of systematic drainage. It is stated that under-hollow collectors should be arranged differentially as consistent with surface relief.

While hydroseeding the lengthway belts that are being sowed with adjacent nipples should have a 5% overlap. This will provide for the belt’s even sowing full width. Measuring the width of the overlap N (considering the steepness of the country) and the distance between the needles helps to define the distance between the nozzles. The evenness of sowing, the consumption of the suspension, the types and parameters of the needles, the height on which the sowing boom is located, the traverse speed of the machine, and the seeding rate determine the quality of hydroseeding.

Soil properties are divided into 3 types based on the rate of soil processes: «soil-moment», «soil-situation» and «soil-memory». Soil organic matter contributes to soil productivity in many ways, but there is no direct quantitative relationship between soil productivity and soil organic matter evolution. In the studies the dynamic of the agricultural crops productivity on peat soil for the last 32 years preserved at the stable level.

On the ground of own experimental research and the literature data analysis it was established that permanent grasses that grow on soils with high level of exchangeable potassium accumulate up to 4-5% of К2О in dry matter. Specialists believe that the acceptable levels of potassium contained in animals’ food are considerably exceeded. Another point considered is the close connection between the water application rate in the livestock waste and the potassium accumulation in plants. In order to make the quality of the food better it is suggested to stop using potassium for fertilizing the first-year grasses which grow on sabulous soils with the level of exchangeable potassium more than 200 mg/kg.

The models of optimization of the barley production process and the normative materials describing the main fertilization (considering the crop capacity planned) and additional fertilization (considering the results of the plant diagnosis, types of nitrogen fertilizers and weather conditions) are given in the article.

It was established that after drainage and agricultural long-term application of peat soils (for about 50 years) there appear mineral peat soil complexes that differ significantly in terms of quantitative and qualitative nitrogen fraction composition. The models of prediction of nitrogen fractures content in soil when changing the amount of organic matters in it and the approximate diagnostic criteria of the nitrogen fraction composition in peat soils on different stages of evolution (that can be used in various soil studies) are represented in the article.

The dependence of the content of 137Сs-forms in sod-podzolic sabulous soil of different degree of humidification on the basic soil tillage. In sod-podzolic sabulous soils with 137Cs pollution density which equals to 13-15 Cu/km2 the content of the accessible for plants forms (water-soluble, exchangeable, mobile forms) makes in average 9-11%; of those inaccessible (not exchangeable, fixed) 89-91%. It is established, that the degree of the hydromorphic feature in sod-podzolic sabulous soil influences the content of accessible forms 137Cs in its top layer. The chisel tillage and the minimum tillage make it possible to decrease the accessible 137Cs connections by 2-4%.

On the territory of Belarusian Polesye some objects of peat soil drainage reclamation (30-450 years old after the drainage) were chosen. The hydrophysical and biochemical properties of peat soil, the forms of nitrogen contained and fraction composition of the organic matters in soils at different agricultural usage periods (after the drainage) have been estimated. The findings of the research have revealed that during the agricultural usage of soils a complete degradation of drained peat soils does not take place. The most active phase of the organic matter mineralization in peat is finished after 40 years of usage, and in 200 years the biochemical processes stabilize. Provided the agriculture production is efficient (soil spare treatment, the most effective combination of organic, macro and micro fertilizers, adaptation of some crops) the soil may be used for an indefinite long time.

The data related to the agrochemical indicators, chemical composition of the bottomland soils of the river Pripyat, their changes under the influence of draining and other agroanthropogenic factors is given in the article. The characteristics of the phytomass reserve of the ground cover before the drainage are also provided.

The modern state of hayfields and grasslands in the Republic and the research methods of improving their efficiency are given in the article. The author also provides the readers with some information about the results of the field experiments that were held to examine whether it is possible to create a meadow haying process using different types of grasses. It was established that it is possible to increase the duration of mowing the first growth of grasses only during the optimum phase (40-45 days). Some formulas of the cereal and fabaceous mixed grass crops that make it possible to organize the raw haying process are suggested. The main elements of the resourcesaving technology of herbage meadow reformation which allows to decrease costs are given. The results of intercropping of some sorts of legumes into the turf of old herbage and the possibilities of their efficient longevity are also represented in the article.

The problem of degradation of peat soils polluted with 137Cs and 90Sr and cultivation of the crop production on them is considered in the article. It is recommended to use shallow peat soils as grasslands. Permanent cereal grasses restore organic matters of these soils and provide economic efficiency of agricultural use. According to the results of the research held in Vetka district, the transfer factors of 137Cs and 90Sr to plants are relatively low. This fact is explained by the time that has passed since the accident on Chernobyl nuclear power plant and by the variations of mobile potassium and exchangeable acidity in peat soil.

It was established that the complex use of the technological methods of soil improvement during meadow reformation enables to gain more energy valuable haying fodder crops from fabaceous and cereal herbages.

The formation of the herbage crop yield and the dry matter of the slough grass on the sod-podzolic, gleylike, medium loamy soils in agrometeorological conditions typical for Belarusian Lakeland. The total precipitation, the average daily temperatures during the vegetation period, their influence on the crop capacity, soil volume humidity, mineral fertilizers doses, cereal and legume-cereal herbage mixtures are represented in the article. It is stated that the herbage crop yield of the slough grass alone formed 215 c/ha, mixed with cereal grasses - 237.5 c/ha, mixed with legume-cereal - 372.5 c/ha. Maximum capacity of herbage and dry solid matter during the 2009-2010 period was reached in the mixture of slough grass + meadow fescue + alsike clover either without any fertilizers or with various mineral nutrition background.

The elements of the cultivation technology of a new fodder crop - fenugreek (Тrigonella foenum graecum L.) - grown on the sod-podzolic soils in northern Belarus are represented in the article. The difference in field germination rate and plant preservation ability between different regions of the country are shown. The herbage and seed efficiency in relation to the seeding rate is being estimated.

This article deals with the information related to normal operating conditions of the closed drainage network, types of the collection-and-drainage network defects and the reasons of their appearance, assessment of the network condition and its functionability, criteria for choosing the reclamation system for flooding, technical means and the technology of collection-and-drainage network flooding, preliminary works and ways of restoring the drainage system, technology of flooding the collective network with the help of an inflatable dam, some technical characteristics of the guiding device and the water withdrawal device.