الفهرس 
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Abstract
The main objective of this study is to determine the most appropriate ways of land leveling methods, which is working to reduce the water flow resistance and the increase irrigation efficiencies. Three different leveling methods included:- 1-leveling by laser equipment of 0.00% level slope (L1). 2- leveling by hydraulic scraper (L2). 3- leveling by rotary tiller (L3) and two experiments were carried out at Gemiza, El-Gharbia government,(silt clay soil) during two successive agricultural seasons of winter(wheat)2014/2015, and summer (corn) 2015. The result indicated the following important point: -The highest increase in the soil bulk density under leaser treatment (L1) in two season this recorded 1.13 to 1.21 g/cm3, and 1.18 to 1.29 g/cm3 at first and second season respectively. -The highest decreased in the soil porosity under leaser treatment (L1) in two season this recorded 57.36 to 54.34%, and 55.47 to 51.32 at first and second season respectively. -The great value in mean weight diameter under rotary treatment (L3) in two seasons this recorded 28.06 and 29.19 mm at first and second season respectively. -The highest soil smoothness was observed under treatment L1. The average percentages of smoothness were 82.14 and 87.76 % at first and second season respectively. -The decreased at Manning coefficient recorded about ( 53.5 and 43.7%) and (51.7 and 47.2% ) comparing to (L2) and (L3) treatments at first and second seasons respectively. -The average irrigation application efficiency at L1 treatment were 80.99% and 89.9% at first and second seasons respectively. -The values of average Low-quarter distribution uniformity at L1 treatment were 62.78% and 62.9% at first and second seasons respectively. -The water use efficiency was a great value with the treatment L1 than the other treatments. The values of water use efficiency at L1 treatment were 1.095 and 1.38 kg/m3 at first and second season respectively.