HYC Wheat Germplasm x Environment x Management (GEM)

To determine the response of three cultivars (RGT Cesario, Scepter and RGT Accroc) tested under 2 fungicide programs (single spray at flag leaf (GS39) and high input GS31, GS39 & GS59) and four canopy management strategies (Standard N 150kg N/ha, High N 225kg N/ha, High N defoliation, High N plus PGR). Mechanical defoliation was carried out at late tillering prior to GS30 before stem elongation defined. The single timed application of PGR was based on Moddus 0.2 + Errex 1.3 applied at GS31.

本试验旨在明确三个供试品种（RGT Cesario、Scepter与RGT Accroc）在两种杀菌剂施用方案及四种冠层管理策略下的响应表现。其中两种杀菌剂施用方案分别为：①仅在旗叶期（GS39）单次喷施；②高投入量方案，即分别在GS31、GS39及GS59三个时期喷施。四种冠层管理策略包括：常规施氮（150kg氮/公顷）、高施氮量（225kg氮/公顷）、高施氮量+机械摘叶处理，以及高施氮量+植物生长调节剂（Plant Growth Regulator，简称PGR）处理。机械摘叶作业于分蘖末期、茎伸长起始前（GS30期前）开展。单次植物生长调节剂喷施作业于GS31期进行，所用药剂配比为Moddus 0.2 + Errex 1.3。