摘要
为准确掌握限水条件下冬小麦高产高效的灌溉制度,分析比较了2019-2020年(枯水年)冬小麦不同灌溉量处理(127、172、217、262、315 mm)对土壤水分含量、作物产量构成因素指标及水分利用效率等指标的影响。结果表明,随着灌溉量的增加,冬小麦产量构成因素千粒重、穗粒数、穗数变化趋势较一致,均为先增加后减少。当灌水量为127~217 mm时,随着灌水量的增加,千粒重、穗粒数、穗数显著增加;当灌水量为217~315 mm时,随着灌水量的增加,千粒重、穗粒数、穗数呈缓慢减少的趋势,但差异不显著。当小麦生育期灌水量217 mm、春季关键期3次灌水、每次灌水60 mm时,冬小麦产量和水分利用效率达到最高,分别为8396.72 kg/hm^(2)和19.19 kg/(hm^(2)·mm)。
To accurately find out high-yield and high-efficiency irrigation system under water-limited condition in winter wheat,we compared the effects of five different irrigation amounts(127,172,217,262,315 mm)in 2019-2020 year on soil moisture content,crop yield component factors and water use efficiency.Results showed that with the increase of irrigation amount,yield component factors of 1000-grain weight,grains per spike and ear number all increased firstly and then decreased.When irrigation amount was 127-217 mm,the 1000-grain weight,grains per spike and ear number enhanced significantly.When irrigation amount was 217-315 mm,the 1000-grain weight,grains per spike and ear number decreased slowly,but there were no significant differences.Under the conditions of 217 mm irrigation amount at growth period,3 irrigation times at spring key period and 60 mm for each irrigation,the yield and water use efficiency of winter wheat reached the maximum values,which were 8396.72 kg/hm^(2) and 19.19 kg/(hm^(2)·mm),respectively.
作者
石学萍
刘伊明
王九明
兰印超
檀海斌
SHI Xue-ping;LIU Yi-ming;WANG Jiu-ming(National Engineering Research Center for Semi-Arid Agriculture,Shijiazhuang,Hebei 050011)
出处
《安徽农业科学》
CAS
2021年第11期51-52,71,共3页
Journal of Anhui Agricultural Sciences
基金
河北省重点研发计划项目(1922700)
河北省平原粮食规模化生产科技示范工程项目。
关键词
冬小麦
灌水量
产量
水分利用效率
Winter wheat
Irrigation amount
Yield
Water use efficiency
作者简介
石学萍(1979-),女,唐山乐亭人,高级农艺师,硕士,从事作物农艺节水研究;通信作者:檀海斌,研究员,从事农田水利研究。
