Effect Of Controlled Release Urea On The Physiology Indexes And Grain Quality Of Spring Wheat

In this stUdy, pot cultUre and field eXPeriment were cAned out to stUdy theeffects of controlled release urea on physiology activity the quality and the yield ofspring wheat.The nitrate reductaSe activity (N'RA),the content of chlorophyll of leaves,the total absorption surface and the active absorption surface of spring wheat root system,the content of grain pTOtein and prOtein components, root dry weight, the content ofnitrogen in plan were determined. Effective spike numbef, nurnber of grains per spike,gran weight per spike and l00pegrain weigh, as well as spring wheat yield weremeasured.The results of pot culfore proved that in trCatmellts using controlled release ureaNRA were higher than those tretheeme using common urea; for the tOtal absorptionsurface and the active absorption surface, CRU3 was the best in booting stage;controlled release urea can increase the content of chlorophyll a and a/b in growingStagr.The order of root dry weight was CRU3 >C RU l >CRU2>CU. The contro l l edrelease urea can increase the content nitfogen of spring wheat pIat. The controlledrelease urea can upgrade the ability of photosynthesis, improve the roOt system activitydelay decrepit of wheat plan.Controlled release urea can Anprove the content of grain prOtCin of spring Wheat. Inpot cultur, the order of grain protCin was CRU3 >CRU2>CRU l >CU. In fi e ldexPerAnent and residual-effeCt exPeriInent, controlled released urea can increase thecontent of grain protein of spring Wheat significanly In residual-effect exPeriment forCRUs, the order of the content of grain protein components was CRUl>CRU2>CU.ContrOIled release urea enhanced the yield indexes and improved the yieId of springwheat.