黄土高原沟壑区水肥因子对冬小麦经济性状的影响

Effect of water and fertilizer on economic properties of winter wheat in Loess Plateau galley regions.

利用田间试验方法，研究了不同水肥条件对冬小麦主要经济性状的影响．结果表明，限制黄土高原沟壑区冬小麦生产的最主要因素是肥而不是水．在任何灌水条件下，施肥对冬小麦的经济性状都有明显的正效应；而只有在施肥的条件下，灌水才有正效应；否则，灌水反而有负作用．

Field experiment shows that in Loess Plateau galley regions, the most important limiting factor for wheat growth was fertilizer instead of water. With irrigation, fertilization had a significant positive effect on the economic properties of winter wheat, while irrigation could have a positive effect only when the fertilizer was applied.