Mid-row banding of Nitrogen to improve nitrogen use efficiency and reduce fertiliser applications in cropping systems.

The trials aim was to assess and evaluate the effectiveness of mid-row banding (MRB) nitrogen, to improve N use efficiency and yields.The trial involved both a small plot trial at South Stirlings and a broadacre site at Kendenup.The broadscale trial contained two treatments where 125kg/ha of Urea was applied at seeding. Treatment one was via MRB, treatment two was via top-dressing.The small plot trial contained 6 treatments, which had a N application seeding and at tillering. Treatment 1, MRB 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 2, MRB 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 3, Top-dressing 125kg/ha Urea at seeding & MRB 100L/ha of flexi N at tillering. Treatment 4, Top-dressing 125kg/ha Urea at seeding & Top-dressing 100L/ha of Flexi N at tillering. Treatment 5, nil Urea at seeding, & MRB 100L/ha of flexi N at tillering. Treatment 6, Nil Urea & Top-dressing 100L/ha of Flexi N at tillering.

本试验旨在评估行中条施（mid-row banding, MRB）氮肥的施用效果，以提升氮肥利用效率与作物产量。本次试验包含两处试验场地：一处为南斯特灵（South Stirlings）的小区试验，另一处为肯登纳普（Kendenup）的大田试验。该大田试验设置2个处理组，均在播种期施用125kg/ha的尿素（Urea）：处理1采用行中条施方式，处理2采用撒施追肥方式。该小区试验设置6个处理组，均在播种期与分蘖期施用氮肥：处理1为播种期行中条施125kg/ha尿素+分蘖期行中条施100L/ha弹性氮肥（flexi N）；处理2为播种期行中条施125kg/ha尿素+分蘖期撒施100L/ha弹性氮肥；处理3为播种期撒施125kg/ha尿素+分蘖期行中条施100L/ha弹性氮肥；处理4为播种期撒施125kg/ha尿素+分蘖期撒施100L/ha弹性氮肥；处理5为播种期不施尿素+分蘖期行中条施100L/ha弹性氮肥；处理6为不施尿素+分蘖期撒施100L/ha弹性氮肥。