Ograniczanie wyników

Czasopisma help
Autorzy help
Lata help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 29

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  soil protection
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The paper presents the territorial differences in the implementation of ”soil and water protection” agri-environmental package within the scope of the Rural Development Plans, RDP 2004-2006 and RDP 2007-2013, in Poland. The research material involved data provided by the Management Information System of the Agency for Restructuring and Modernisation of Agriculture developed on 16.04.2010 by the Department of Analyses and Reporting. The main beneficiaries were farmers in the voivodships in the north-western part of the country. The most interesting variant for farmers was the ”stubble catch crop”. The greatest interest in cereals and cruciferous was noted for catch crops. Ratio of area covered by the implementation of the package in the RDP 2004-2006 to agricultural land in farms (%) was positively correlated with the average area of arable land per farm (ha), percentage share of cereals in cropping area and negatively correlated with cattle stock in head per 100 ha of AL. In RDP 2007-2013 this ratio was positively correlated with consumption of nitrogenous fertilizers per 1 ha of AL (kg), average economic size of farm (ESU) and Standard Gross Margin (SGM) of farm (PLN).
The performed studies dealt with of problem of peatland surface subsidence on the Wizna study area with a functioning prototype of an amelioration system consisting of collective ditches spaced at an interval of 500 m and a low-slope (i= 0.5 %о) drainage-irrigation network. The studies involved well irrigated wet (A) and semi-dry (C) potential soil-moisture complexes. The obtained results refer to the peatland close to the drains i.e. the area, which was deformed, artificially lowered and compacted due to melioration measures. Parts of the studied plots were used as highly productive meadows. Except for the modernization of the melioration system (replacing ditches with drains) and post-melioration management of complete cultivation (on plot B-16 this management was performed twice), systematic intensive measures using of heavy equipment were carried out on these areas. The studies showed that on a peatland meliorated between 1963 and 1964 the surface still slowly subsided. In the period 1975-1995, the peatland surface declined on average by 0.3 cm ∙y-1 on a wet complex (A) and twice that, i. e. by 0.6 cm∙ y-1 on a semi-dry complex (C).
Data from the Central Statistical Office and from the literature of the subject have been used to present the hazards for the natural environment, created by nitrogen and phosphorus compounds. The issue concerns inland waters and the Baltic Sea. The existing hazards are controlled by rational fertilisation, the appropriate structure of cultivation and biochemical barriers. Following Poland’s accession to the European Union, an effective instrument has been obtained in the form of an agrienvironmental programme, especially the packages: „water and soil protection” and „establishing buffer zones”, which can result in reducing the infiltration of biogenes to the environment. The data from the Agency of Agriculture Restructuring and Modernisation and the research conducted by the authors in the Warmia and Mazury and the West Pomerania Provinces have confirmed the large interest of farmers in the „water and soil protection” package. The clearly observed lack of interest in the „buffer zones” package necessitates corrections, mainly by increasing financial subsidies for farmers.
In a present article the results of land fund investigation of Vasylivka Rural Counsil in Onufriivka region of Kirovohrada oblast in Ukraine and agricultural lands productivity monitoring of land use entity Limited Liability Company “Maryivske” are given. It was established that lands are low-yielding (2.5 Mg ha⁻¹of crops and leguminous plants) and ploughed up to 71%. The implementation of measures of agricultural chemicals rational use showed that their productivity reached 100%. It is reasonable to calculate the rates of local fertilizer distribution, taking into account soil chemical characteristics, provided by plants protection products adding and bioactive substances.
The performed studies dealt with the problem of drainage pipeline deformation in a prototype, low-slope (i = 0.5%o) drainage-irrigation network. The lowering of the drainage foundation plane, drainage shallowing, and changes and deformations of the local slopes of the drainage network were evaluated. Detailed studies were carried out in 1971-1995 in the south-eastern part of the Wizna meadow on parts of plots B-7 and B-16. On plot B-7 there is a soil type Mtlaa belonging to the wet (A) potential soil moisture complex and formed on 5-6 m thick peat layer, while plot B-16 is covered by a soil type MtHcc belonging to the semi dry (C) potential soil-moisture complex formed on a 3-4 m thick peat layer. Except for the modernization of the melioration system (replacing ditches witch drains) and post- melioration management of complete cultivation, systematic intensive measures using heavy equipment were carried out on these areas. The studies involved a peatland along the drains i.e. the area that was deformed, artificially lowered and compacted due to melioration measures. Between 1975 and 1995 practically no decline in the plane of the drain foundation was observed. What subsided in the peatland was mostly the upper layer (from the surface to the plane of the drain foundation). The mean rate of shallowing of this layer was roughly equal to the rate of peatland subsidence and reached 0.3 cmy-1 on Mtlaa soil and nearly 0.6 cmy-1 on MtHcc soil. The studies also demonstrated the decreasing slope of the drainage pipelines. Since pipeline was established until 1995, the slope decreased by ca. 0.1 %o (0.005 %o∙y-1) to the value of 0.4 %o. A decrease in the pipeline slope is an unfavorable phenomenon for the functioning of the drainage network in capillary irrigation systems.
W pracy przedstawiono wpływ zróżnicowanej ilości wysiewu owsa uprawianego bez wsiewki i z wsiewką oraz położenia na stoku na produkcyjność i glebochronność owsa. Stwierdzono niższe plonowanie (0,31-0,34 t/ha) oraz wyższe o 11-21% straty gleby wywołane erozją wodną, na stanowiskach owsa z wsiewką. Wzrost nachylenia stoku o 5% spowodował zmniejszenie plonowania o 0,2 t/ha i zwiększenie strat gleby o 40%.
The research was aimed at defining the possibilities to determine the state of soi contamination by means of a thermal-visional computer system. A liquid fuel base in Grabowm Wielkie near Wroclaw was subjected to research. Thermal images were made from the deck of a plane, at a height of 500m. At the same time, colourful aerial photographs were taken and the base picture was recorded with a video camera, with a simultaneous indicator verification in the area. Quantity data concerning the contamination were obtained by means of a KVA sounder The amount of hydrocarbons in the air was determined using Kitagawa and Drager detector tubes. The usefulness of thermography in this kind of research was proved, determining a higher actual temperature of the contaminated area than the one free from contamination taking into account their emissivity.
The mineralization of nitrogen in post-boggy soils with a wide range of soil organic matter - SOM (from 3% to over 80%) was studied. Laboratory aerobic incubation of soil samples taken volumetrically in the autumn period was carried out. According to N-NO3 content after incubation one can state that moorshous formations have medium levels of available nitrogen, moor- shes - medium to high, and peats - low. The relationship between N-NO3 content and soil moisture (%, v/v) is parabolic. The highest nitrate content was found in samples with water content of 40- 70%, v/v. The relationship between the quotient N-NO3 : N-NH4 and the water content displays a similar pattern. The rate of nitrogen transformation is higher in post-boggy soils with lower content of SOM than in soils having more organic matter. In moorshous soils mineral nitrogen after incubation constitutes 0.71% of total nitrogen, whereas in moorsh soils only 0.31%.
The Macroregion of the Mazurian Lake District and the adjoining mesoregion of the Sępopol Plain were formed during Baltic glaciation and in the post-glacial period. The existing habitat differentiation, especially large variations in the soil cover, is divided into three distinct landscape zones. The northern areas of the district are typical heavy and very heavy soils, composed of tight clays and loams, represented by brown soils and black earths. They contribute to the ecosystem stability. Hydrogenic soils occupy only a small area. Agricultural production, when carried out correctly, should not threaten the habitat and should be in harmony with the area in question. The central, moraine area of the Mazurian Lake District, with unique natural qualities, is comprised of different soil forms and various soil covers. Brown and lessive soils are dominant among mineral soils. Deluvial soils are common, which is a warning sign on the danger of erosion. Contribution of hydrogenic soils is clearly seen. Protection of these soils, as well as re-naturalisation of the selected areas, is becoming vital. This area badly requires ecological farming. Light and very light soils, mainly rusty and podzo! soils, accompanied by large areas of sensitive for transformation hydrogenic, muck, and mucky soils occur in the southern part of the district, in the area of outwash plains. Outwash plains call for complex solutions to improve the quality of their mineral soils, as well as utilisation and protection of hydrogenic soils.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.