Tham khảo tài liệu 'environmental technologies part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Improving the Grapevine Technology by Optimising the Utilisation of the Environmenthal Resources in the Murfatlar Vineyard 173 An optimum solution is to choose the less water consumer system like drip irrigation. The efficiency of utilizing water in the case of the sprinkle irrigation system is 50 compared to the 85-90 of the drip irrigation Ranca 2005 . Once with the local application of the water in reduced quantities we can concomitantly apply the fertilization with soluble fertilizers. The description of the drip irrigation system existing on the pilot plot In this step the system serves a single plantation the Columna one but allows for the ulterior linkage of other plots. The bringing of water is realized through a PEHD 80D 50mm conduct on the distance of 230 m fueled from a common underground network of irrigation water supply. The first filtering is done with a main sand filter that assures a 230 mc h debit and the second filtering is done with a small plastic filter having a filtrating surface of 527 cm2 having a debit of mc h. The filtering is preview with two manometers on entrance and exit and evacuating cock. The fertilization is done through an injector integrated in a circuit with a cock access that assured a medium debit on the injector of 50l min 3 mc hour of fertilized solution injected in the irrigation water. Distribution is done with tubes PEHD D50 mm respectively 40 mm for the distribution antenna water on the plant rows figures 2 and 3 . After the technological probes and the determining of the functional parameters of the installation will have introduce an automatic programming system. Fig. 2. Dirip irrigation distribution on the plants row in the Columna experimental plot The watering system is previewed with plastic tubes with double incorporated drippers situated at 60 cm from the other on the tubes length. Each dripper assures a 3 l h debit at a supplied water pressure of between and 2 atmospheres having from the construction a
