摘要
通过特殊自然干旱胁迫的方法 ,研究不同干旱胁迫对水稻的水分利用效率 (WUE)的影响 ,在一定供水量时 ,水稻的 WUE随供水量的增加而下降 ,但水稻旱种时 ,却因供水量过低 ,干旱胁迫严重 ,WUE值为最低 .不同品种的水稻 WUE存在较大的差异 ,抗旱性强的品种具有较高 WUE,因此选用具有较高 WUE的品种 ,是水稻节水栽培的关键 .
Ten paddy rice ( orazy sativa L.) varieties have been studied under different water stresses of natural condition. The result showed that when certain total water was used, WUE would be decreased as total water consumption was increased. But WUE of paddy rice would be lowest when paddy rice was grown on upland. WUE is varied among the varieties; the variety with high WUE possesses high dry resistance.
出处
《生命科学研究》
CAS
CSCD
2000年第4期351-355,共5页
Life Science Research
基金
"九五"国家重点攻关项目!( 95-0 0 1 -0 1 -0 4 )
关键词
水稻
干旱胁迫
耗水量
水分利用效率
paddy rice ( orazy sativa L.)
drought stress
total water consumption
water use efficiency (WUE)
