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- W3150517303 abstract "Water deficiency is recognized as a major problem in winter wheat production in the Huang-Huai-Hai Plain. This study aimed to assess the impact of drought stress on winter wheat yield and raise irrigation proposals for water-saving production in this area. With reference to the fact of water deficits in major growth stages of wheat and the local irrigation practice, we input different irrigation levels(volumes) required by the DSSAT crop model to simulate yield variations in response to irrigation levels at critical growing stages in four typical sites during the past three decades. The cumulative probability for yield reduction was concluded based on irrigation at jointing–heading and filling stages. The greatest yield reduction was found under jointing–heading drought stress, and the relative change rate in yield was two folds to that under drought stress at filling stage. This relative yield change was primarily attributed to the relative change in grain number per square meter caused by water deficiency during jointing–heading stage. Under high-strength drought stress, medium yield reduction dominantly resulted from water deficiency during jointing–heading, with a two-fold probability to that under drought stress at filling stage(except for Yanzhou site); whereas, slight and severe yield reductions at Shijiazhuang and Tianjin sites resulted from early(jointing–heading) drought stress and those at Yanzhou and Xinxiang sites were attributed to either early(jointing–heading) or late(filling stage) drought stress. At Yanzhou and Xinxiang sites, the probabilities of slight yield reduction were similar under early and later drought stressed; however, water deficiency at filling stage resulted in severe yield reduction. These results indicate that irrigation is important not only from jointing to heading but also at filling stage of winter wheat in the southern area of the Huang-Huai-Hai Plain." @default.
- W3150517303 created "2021-04-13" @default.
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- W3150517303 date "2014-01-01" @default.
- W3150517303 modified "2023-09-27" @default.
- W3150517303 title "Simulation of Winter Wheat Yield in Response to Irrigation Level at Critical Growing Stages in the Huang-Huai-Hai Plain" @default.
- W3150517303 hasPublicationYear "2014" @default.
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