Effect Of Wheat Yield And Water Use Efficiency Different Fertilization Levels

Fertilization is the main way to improve yield of Wheat.This test under the naturalrainfall condition in weibei dryland, through different fertilizer levels (N, P, K ratio of theamount), Screening dryland wheat yield and water use efficiency to achieve the best valuewhen the fertilization level, in order to improve and extensive dryland wheat CultivationTechniques. The test has achieved the following results:1.The wheat yield significantly different under different fertilization levels.the highest yieldunder ultra-high-yield and efficient level was7180.32kg hm2,than the super high yield levelincrease of17.7%, high yield and efficiency levels increase by25.4%,19.9%increase thanthe farmer level, an increase of32.3%compared with the control.2.Different fertilizer levels on yield components effect is obvious.①On the spike number,thehighest spike under ultra-high-yield and efficient level was33.44Grains/panicle, than thesuper high yield level increased by15.4%more than the high yield and efficiency levelof10.7%and11.9%more than the farmer level, higher than the control19.5%。②For thepanicle number,the highest ears under ultra-high-yield and efficient level was501.00plants/ha,an increase of3.7%than the super high yield level than the high yield and efficiency level, anincrease of17.6%,16.2%more than the farmer level higher than the control32.9%.③Ongrain weight, ultra-high-yield and efficient level of grain weight was49.40g, less than thesuper high yield level of2.7%less than the high yield and efficiency level of1.5%t,5.7%less than farmers mode, a decrease of4.4%compared with the control.3.The WUE rate under different fertilization treatments differences are significant. Super highyielding and efficient level of water utilization rate of18.06kg· mm-1· hm-2,21%higher thanthat of ultra-high-yield level than the high yield and efficiency level of22.9%,17.1%morethan the farmer level, was increased by30.4%.4.Wheat groups under different fertilization treatments and individual differences are obvious.Group differences under different fertilization treatments before winter, the highest super highyield levels, between individuals in addition to times take root there was no difference, othervarious indicators are significant with differences of spring between each treatment group difference significantly, the highest farmer level, the individual indicators in addition to alevel tiller and two-tiller differences significant differences in other indicators were notsignificant.