山东农业科学2023，Vol.55Issue(12)：34-41,8.DOI:10.14083/j.issn.1001-4942.2023.12.005
灌水量对不同需水型冬小麦产量建成及水分利用效率的影响
Effects of Irrigation Amount on Yield Formation and Water Use Efficiency of Winter Wheat with Different Water Requirement Types
摘要
Abstract
In order to achieve the synergistic promotion of winter wheat yield and water use efficiency(WUE),it is very important to clarify the effects of irrigation amount on yield formation and water use charac-teristics of different water requirement types of winter wheat.In this study,the wheat varieties Jimai 22 requiring high level of fertilizer and water and Shannong 25 with drought resistance were used to study the effects of differ-ent irrigation treatments on their dry matter accumulation,grain-filling characteristics,photosynthetic character-istics,yield and water use efficiency,and also the interaction effects between different irrigation amounts and varieties.The irrigation treatments were set as W0(no irrigation during the whole growth period),W1(60 mm water at jointing and flowering stages,respectively)and W2(60 mm water at overwintering,greening,jointing and flowering stages,respectively).The results showed that appropriate irrigation amount could significantly in-crease the net photosynthetic rate(Pn)of flag leaves,active duration of grain filling(P)and mean grain-filling rate(V)of different water requirement winter wheat varieties,and then increased their yields.The two-year av-erage yield of Jimai 22 under W2 treatment was significantly increased by 32.70%and 9.03%compared with W0 and W1 treatments respectively,and that of Shannong 25 under W1 treatment was 23.70%higher than that un-der W0 treatments,but was not significantly different with that under W2 treatment.Under W1 treatment,the two-year average WUE of Jimai 22 and Shannong 25 significantly increased by 17.97%and 39.84%compared with W2 treatment,respectively.The interaction effect analysis showed that the interaction of variety and irriga-tion amount had significant effects on the yield formation and WUE of winter wheat.In summary,irrigation a-mount,variety and their interaction could improve winter wheat yield and WUE by increasing spike number,prolonging grain-filling active duration and increasing average grain-filling rate,so optimized irrigation amount matching variety could realize the synergistic increase of winter wheat yield and WUE.关键词
冬小麦/灌水量/品种/灌浆特性/产量/水分利用效率Key words
Winter wheat/Irrigation amount/Variety/Grain-filling characteristics/Yield/Water use efficiency分类
农业科技引用本文复制引用
李佳,张慧,李宗新,钱欣,王良,赵海军,肖蓉,高英波,刘开昌..灌水量对不同需水型冬小麦产量建成及水分利用效率的影响[J].山东农业科学,2023,55(12):34-41,8.基金项目
国家重点研发计划项目(2022YFD2300801) （2022YFD2300801）
山东省玉米产业技术体系创新团队项目(SDAIT-02-07) （SDAIT-02-07）
山农省农业科学院农业科技创新工程项目(小麦玉米周年吨半粮关键技术研究)(CXGC2023A17) （小麦玉米周年吨半粮关键技术研究）
