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期刊名称: CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
Volume:79    Issue:2        Page:190-201
ISSN:0718-5839,0718-5820

Effects of supplemental irrigation based on soil water content on water consumption, dry matter and yield of wheat期刊论文

作者: Zhang YL Yu ZW Shi Y Gu SB Zhang YY
DOI:10.4067/S0718-58392019000200190

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页码: 190-201
被引频次: 0
出版者: INST INVESTIGACIONES AGROPECUARIAS,Chilean Journal of Agricultural Research
期刊名称: CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
ISSN: 0718-5839,0718-5820
卷期: Volume:79    Issue:2
语言: English
摘要: Water-saving cultivation in wheat (Triticum aestivum L.) is an important technique for achieving high yield and high water use eficiency (WUE) in the North China Plain (NCP) where water resources are in shortage. In order to determine the effects of supplemental irrigation based on soil water content on crop evapotranspiration (ET), DM, grain yield and WUE in wheat, treatments were designed to vary the relative soil water content at jointing and anthesis stages: I-70 (70%, 70%) and I-75 (75%, 75%) with rain-fed (I-0) and traditional irrigation (I-ck) as contrasts. The results indicated that the irrigation amount of I-70 and I-75 were significantly lower than that of I-ck by 45.1 to 132.4 mm, but soil water depletion increased by 23.5 to 35.4 mm. Although the total ET throughout the growing season (ETt) of I-75 was less than that of I-ck, the ratio to ETt from anthesis to maturity increased significantly. The DM partitioning ratio was decreased in vegetable organs, but increased in grain for I-75 compared with I-ck. The grain yield for I-75 was significantly higher than that of I-0 and I-70, whereas nonsignificant difference was observed between I-75 and I-ck, and the WUE and irrigation water use efficiency of I-75 were higher than those of Ick by 11.0% and 87.4% in 2008-2009 and 3.5% and 34.0% in 2009-2010. Thus, I-75 can be developed as an optimal water-saving irrigation regimes in the NCP.
相关主题: NITROGEN APPLICATION, AGRONOMY, Dry matter accumulation and partitioning, PERFORMANCE, water consumption characterization, DEFICIT IRRIGATION, USE EFFICIENCY, grain yield, WINTER-WHEAT, water use efficiency, GROWTH, PRODUCTIVITY, AGRICULTURE, MULTIDISCIPLINARY, PHOTOSYNTHETIC CHARACTERISTICS, GRAIN-YIELD, Triticum aestivum, HARVEST INDEX, Irrigation, Water supply, Grain, Grain cultivation, Water use, Water conservation, Dry matter, Irrigation water, Precipitation, Winter, Groundwater, Moisture content, Efficiency, Agricultural production, Evapotranspiration, Water content, Soil water, Water consumption, Agriculture, Seasons, Crop yield, Water shortages, Water resources, Jointing, Cultivation, Organs, Supplemental irrigation, Water use efficiency, Depletion, Irrigation efficiency, Wheat,

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