不同氮肥运筹对冬小麦氮肥利用率和土壤硝态氮含量的影响.pdf

24 4 Vo l. 24 No . 4 20 10 8 J our nal of Soil and W ater Conserv ation A ug . , 20 10 * 徐 钰, 刘兆辉, 江丽华, 林海涛, 郑福丽, 谭德水 ( , 250100 : , , , - , , ( FP , ( O PT ( CRF+ O F CR F ( O PT + O F , , , 4 , 0 - 120 cm , , O PT CR F , 744 . 6 8 / hm2 883 . 02 2 / hm , 30 % 53% , : ; ; ; ; : S 14 3. 1; S158. 3; S512. 11 : A : 20 10 Eff ects of Dif ferent Nitrogen Regulation on Nitrogen Fertilizer Use of Winter Wheat and Content of Soil NitrateN XU Y u, L IU Zhaohu, J IA N G Lihua, LIN H ait ao, ZH EN G F uli, T A N Deshui ( I nst it ute of S oil and Fer t iliz er , S hando ng A cademy of A g r icult ur al S ciences , J inan 250100) Abstract : In or der t o increase t he crop pro duct ion and reduce t he environment po llution by N fert ilizer, a field ex periment w as conducted t o st udy t he ef fect s of diff erent nit rog en regulat io n o n g rain yield, nit rog en utiliza - t ion , accumulat io n of N O3 - N in soil and econom ic benef it . T he result show ed t hat optim iz ed fert ilizat io n ( OPT and cont rolledreleased fert ilizer ( CRF + OF and CRF co uld increase grain y