INFILTRATION RATE The infiltration

INFILTRATION RATE

The infiltration rate is the velocity or speed at which water enters into the soil. It is usually measured by the depth (in mm) of the water layer that can enter the soil in one hour. An infiltration rate of 15 mm/hour means that a water layer of 15 mm on the soil surface, will take one hour to infiltrate.

In dry soil, water infiltrates rapidly. This is called the initial infiltration rate. As more water replaces the air in the pores, the water from the soil surface infiltrates more slowly and eventually reaches a steady rate. This is called the basic infiltration rate (Table 7).

The infiltration rate depends on soil texture (the size of the soil particles) and soil structure (the arrangement of the soil particles: see Volume 1) and is a useful way of categorizing soils from an irrigation point of view (see Table 8).

The most common method to measure the infiltration rate is by a field test using a cylinder or ring infiltrometer.

Результаты (хорватский) 1:

Infiltracija STOPA Stopa infiltracija je brzina ili brzina kojom voda ulazi u tlo. Obično se mjeri po dubini (u mm) i vodeni sloj koji može ući u tlo jedan sat. Infiltracija stopi od 15 mm / sat znači da je voda sloj 15 mm na površini tla, bit će jedan sat da se infiltriraju. U suhom tlu, voda se brzo infiltrira. To se zove početna brzina infiltracije. Kao što više vode zamjenjuje zraka u porama, voda s površine tla infiltrira sporije i na kraju dosegne stalnu brzinu. . To se zove osnovna stopa infiltracije (Tablica 7) Stopa infiltracija ovisi o teksturi tla (veličina čestica tla) i strukturu tla (prema rasporedu čestica tla: vidi Volume 1) i koristan način kategoriziranja tla iz navodnjavanje stajališta (vidi tablicu 8). najčešća metoda za mjerenje brzine infiltraciji pomoću testa na terenu pomoću cilindra ili prsten infiltrometra.