苹果园春季土施尿素的利用及其在土壤中的累积.pdfVIP

2009, 36 ( 12): 1805- 1809 ActaH orticu lturae Sin ica 1 1* 1 2 1 1 赵 林 , 姜远茂 , 彭福田, 张 序 , 房祥吉, 李洪波 1 2 ( , , 2 1018; , 265500) 15 : /, N , , , 1138% , , 5 10% , , 20~ 40 cm , , 0 ~ 20 cm , , 40~ 60 cm , 0~ 20 cm , , 3153% , , 5840% 15 : ; ; N; ; ; : S 6611 : A : 0513353X ( 2009) 15 Studies on Utilization and Accum ulation Dynam ics of Spring Soil Nurea Application in Apple Orchard 1 1* 1 2 1 1 ZHAO L in , JIANG Yuanmao , PENG Futian , ZHANG Xu , FANG X iangji, and LIHongbo ( 1 S tate K ey L a boratory of Crop B iology, Co lleg e of H or ticu ltur e Sc ience and E ng ineer ing, Shandong Ag r icultural Un iv er sity, Ta ian, Shandong 2 1018, Ch ina 2 Yan ta i A g ricu ltural Sc ience and T ech no logy A cademy, Yanta,i Shandong 265500, Ch ina ) Abstract: The utilization, residue, loss and transport dynam ics of n itrogen on orchard via soil in early spring by sevenyearold G ala apple trees (M alus dom estica ) /M alus hup ehensis w ere studied, using tracer 15 technique of N. The results show ed that the utilization ratio ofN fertilizerw as low. A t fullbloom stage, the utilization ratio ofN fertilizerw as low er ( 1138% ). A fter fruit harvest, the utilization ratio ofN fertilizerw as the highest. A t fu llbloom stage, the residue rate of N fert