Sorghum growth and yield were studied in relation to low (I-L), medium (I-M), high (I-H) and high till anthesis (I-HA) irrigation treatments, in a seasonally dry climate. A drip irrigation system was used. Soil moisture was measured by neutron probe and rainfall was logged. Plant growth and biomass production were recorded by successive harvestings. The more water they received, plants were taller and produced larger leaf areas. Responses to irrigation were reflected in yield. Excluding I-HA, there was a final yield (dry matter) increase from I-L to I-H of 10 t/ha. However, water use was most efficient (54.0 - 57.2 kg/mm/ha) by I-M. Sorghum yield simulation can be expressed by a linear function of total crop water loss. Copyright (C) 1998 IFAC.
机构:
Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Wang, Zelin
Nie, Tangzhe
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Nie, Tangzhe
Lu, Dehao
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Lu, Dehao
Zhang, Peng
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Zhang, Peng
Li, Jianfeng
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Li, Jianfeng
Li, Fanghao
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Li, Fanghao
Zhang, Zhongxue
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Northeast Agr Univ, Sch Water Conservancy & Civil Engn, Harbin 150030, Peoples R China
Northeast Agr Univ, Key Lab Effect Utilizat Agr Water Resources, Minist Agr & Rural Affairs, Harbin 150030, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Zhang, Zhongxue
Chen, Peng
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Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Chen, Peng
Jiang, Lili
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Jiang, Lili
Dai, Changlei
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Heilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R ChinaHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China
Dai, Changlei
Waller, Peter M.
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Univ Arizona, Dept Biosyst Engn, Tucson, AZ 85721 USAHeilongjiang Univ, Sch Water Conservancy & Elect Power, Harbin 150080, Peoples R China