Coupling effect of water and phosphorus on winter wheat in Yuxi district

Winter wheat was studied in this paper, and eight water-phosphorus coupling experiments were adopted so as to study on the growth, the product, the consumed water of the winter wheat and its water use efficiency (WUE). Results showed that the 1^st one among eight experiments which was composed of 210 kg/hm² P₂O⁵ and 150mm total irrigation water that was irrigated 50mm each time was the best, when the growth of winter wheat was best, the product highest, and WUE higher, while others were not. So, the 1^st one was suggested to be adopted when winter wheat was planted in Yuxi district.