| The experiment was completed in the field to study the effects of limited irrigation and phosphorus on growth and water utility of winter wheat.The result showed that irrigation and phosphorus can enhance plant height,biomass and yield components.The plant height increase with the increase of irrigation quantity,the effects of water on yield and 1000-grain weight reached a significance level and there are no significant differences in spike length,spike weight and kernel numbers per spike.Tillering number,spikes number,1000-grain weight,yield and irrigation water use efficiency increase with the increase of phosphorus.Phosphorus fertilizer has no significant effect on plant height.In this experiment,there are maximum value of plant height,dry matter and yield under the conditions of 120 kg phosphorus per hm2.There was a decline trend all above indexes under the condition of over 120 kg phosphorus per hm2.The best combination to dry matter accumulates and yield was irrigation water 180 mm and phosphorus 120 kg phosphorus per hm2. |