O„quv qo„llanmada suv xo„jaligi boshqaruvini yanada takomillashtirish

6.2. Impact of irrigation methods on crop growth. ..100 
6.2.1. Determination of irrigation methods and their effects on growth and 
development of crops: organization of phenological observations in the cotton. 102 
6.2.2. Determination of irrigation method and irrigation procedures on growth and 
development of crops: Organization of phenological observations in autumn wheat. 
6.3. Experience in determining water consumption in irrigation networks. 108 
6.3.1. Determining the methods of calculating water discharge in irrigation 
networks. ..110 
6.4. Leaching networks. ....112 
6.4.1. Determination of water discharge in leaching, horizontal closed, horizontal 
open, vertical and mixed drainage, calculation of their area unit. .....112 
6.5. Peculiarities of field experiments on erosive soils. ...117 
6.5.1. Organization of experiments on selection of irrigation technics in erosioned 
fields. ......117 
6.6. Organization of experiments on existing areas which faced to wind, 
irrigation and water erosion. ....118 
6.6.1. Determination of soil migration as a result of wind erosion. ...118 
6.6.2. Determination of soil washing as a result of irrigation erosion. ..131 
6.6.3. Determination of soil washing as a result of water erosion. ....132 
6.7 Effects of irrigation techniques and technologies on productivity of 
agricultural crops. ......135 

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211 
6.7.1. Determination of the effects of irrigation techniques and technologies on 
cotton productivity. .135 
6.7.2. Determination of the effects of irrigation techniques and technologies on the 
yield of winter wheat. 141 
6.8. Water consumption of agricultural crops in the experimental field. 143 
6.8.1. Water consumption of cotton in the field of experiments. .....143 
6.8.2. Water consumption of winter wheat in experimental field. .....149