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IRRIGATSIYA va MELIORATSIYA
- Bu sahifa navigatsiya:
- 7. DRYING MELIORATIONS
- 8. MELIORATIVE MEASURES COMBATING SALINIZATION OF THE LAND
6. SOURCES OF WATER FOR IRRIGATION
6.1. Main types of sources of irrigation water and the requirements for them .. 79 6.2. Irrigation Pumping System.......................................................................... 82 6.3. Groundwater use for irrigation.................................................................... 84 6.4. Local runoff for irrigation............................................................................ 87 6.5. Irrigation of cultivated pastures.................................................................... 92 6.6. Wastewater use for irrigation....................................................................... 93 210 7. DRYING MELIORATIONS 7.1. The tasks of drainage reclamation................................................................ 103 7.2. The reasons for salinization and waterlogging of soils ............................... 104 7.3. The effect of excess moisture and salts on plants........................................ 107 7.4. Composition of salts in the soil. Degree and type of salinity....................... 110 8. MELIORATIVE MEASURES COMBATING SALINIZATION OF THE LAND 8 .1. Combating soil salinization ....................................................................................... 117 8 .2. Flushing of land ............................................................................................................ 120 9 . DRAINAGE ON IRRIGATED LAND 9 .1. Water balance ................................................................................................................ 125 9 .2. Types of drainage……………………………………………………......... 130 9 .3. Elements of drainage systems ................................................................................... 133 9 .4. Setting the parameters of horizontal drains ........................................................... 134 9 .5. Location of drainage in the plan ............................................................................... 136 9 .6. Combined drainage ...................................................................................................... 138 9 .7. Vertical drainage ........................................................................................................... 139 Download 106.04 Kb. Do'stlaringiz bilan baham: |
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