摘要
增施肥料可明显改善旱作农田冬小麦叶片水分状况、增加光合速率、延缓叶片衰老，有利于小麦后期维持一定的光合面积和作用时间，有利于籽粒灌浆和增加每穗粒数，也减小了土壤水分不足对产量的影响。在旱作农业中，水肥具有明显的耦合关系，肥料的增产作用不仅在于肥料本身。
Suppling fertilizer have many effects to winter wheat growth in dryland, such as improving photosynthetic rate and water status of leaves, delaying leaf capacity, maintaining certain photosynthetic areas and effect time, improving grain filling, increasing the grain amount of per spike, and decreasing the effects of water stress to yield, et al.. There are obvious interactive effects of water and fertilizer on winter wheat yield, the effect of fertilizer to yield not only depend on fertilizer, but also depend on soil water condition.
出处
《水土保持研究》
CSCD
1999年第1期103-106,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金
关键词
水肥
耦合效应
旱作农田
冬小麦
fertilization interactive effects dryland winter wheat
