前期控水条件下冬小麦的根系和群体光合作用特点

Characteristics of Root and Canopy Photosynthesis of EarlyWater Saving in Winter Wheat

于 1 991～ 1 994年应用盆栽和大田试验研究了前期控水节水高产技术对冬小麦根系和群体光合作用的调控作用。研究表明 ,前期限制供水有利前期根系发育 ,有利产量形成阶段光合物质生产 ,从而达到节水高产。

Potted and field experiments were conducted during 1991～1994 to study the regulation of water saving technique by water stress at early stage on root and photosynthesis in winter wheat. It was found that limit of water irrigation before stem elongation benefited early root growth. The canopy photosynthesis was improved during yield formation period and had got high yield.