刘艳光,曹春瑞,田洪旭,马艳,魏长凯,王瑞,吕艳东.结实期水分供应对寒地水稻生育和产量的影响[J].干旱地区农业研究,2012,30(5):115~122
结实期水分供应对寒地水稻生育和产量的影响
Effect of water supply during grain filling stage on growth and yield of rice in cold region
  
DOI：10.7606/j.issn.1000-7601.2012.05.22
中文关键词:  水分供应  寒地水稻  生长发育  产量
英文关键词:water supply  rice in cold region  growth  yield
基金项目:国家科技支撑计划项目（2011BAD16B11）；黑龙江省省长基金项目（2009HSJ-A-2）；黑龙江省农垦总局科技攻关项目（GA10B102）
作者单位
刘艳光 黑龙江省富华公司， 黑龙江 双鸭山 155811 
曹春瑞 黑龙江省大庆市湖滨学校， 黑龙江 大庆 163316 
田洪旭 黑龙江省赵光农场， 黑龙江 北安 164021 
马艳 黑龙江八一农垦大学农学院， 黑龙江 大庆 163319 
魏长凯 黑龙江八一农垦大学农学院， 黑龙江 大庆 163319 
王瑞 黑龙江八一农垦大学农学院， 黑龙江 大庆 163319 
吕艳东 黑龙江八一农垦大学农学院， 黑龙江 大庆 163319 
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中文摘要:
      以垦鉴稻5号和垦稻12号为材料，采用负压式土壤湿度计监测土壤水势，通过防雨棚内的盆栽控水试验，研究水稻结实期水分供应对寒地水稻生育和产量的影响。主要结果如下：结实期进行-8～-10 kPa的间歇控水处理，两品种穗长和单穗重增加，干物重和叶面积降低；两品种穗数减少，结实率增加，千粒重降低，经济产量降低。结实期进行-18～-20 kPa和-28～-30 kPa的持续控水处理，两品种的穗长增加，单穗重降低，干物重和叶面积降低；两品种的穗数减少，结实率、千粒重和经济产量降低。结实期进行-8～-10 kPa的间歇控水处理可作为寒地水稻节本增效灌溉的土壤水势指标，结实期不宜持续进行土壤水势为-18～-20 kPa以下的控水处理。
英文摘要:
      For studying the effects of water supply during grain filling stage on growth and yield of rice in cold region, Varieties Kenjiandao 5 and Kendao 12 were planted through potted planting in rainproof chamber. Th e soil water potential (SWP) was examined through negative pressure soil moisture meter. The main results are as follows: In intermittent irrigation at -8～-10 kPa of SWP during grain filling stage, panicle length and panicle weight of the two varieties increased, dry matter weight and leaf area of the two varieties decreased; panicle number of two varieties decreased, kernel setting rate, 1000-grain weigh and economic yield of two varieties decreased. In unremitting irrigation at -18～-20 kPa and -28～-30 kPa of SWP during grain filling stage, panicle length of two varieties increased, panicle weight, dry matter weight and leaf area of two varieties decreased; panicles, kernel setting rate, 1000-grain weigh and economic yield of two varieties decreased. Intermittent irrigation at -8～-10 kPa of SWP during grain filling stage could be used as irrigating index for reducing rice production cost and improving economic benefit in cold region. Unremitting irrigation below -18～-20 kPa of SWP during grain filling stage was not suitable.
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