注灌施肥对全膜双垄沟播玉米产量及土壤水分的影响

在榆中县旱作区全膜双垄沟播栽培下，观察了不同注灌施肥处理对玉米产量及土壤水分含量的影响。结果表明，不同水肥条件对玉米产量均有一定的影响。基施N 180.00 kg/hm2、P2O5120.00 kg/hm2、ZnSO47.50 kg/hm2、K2O 30.00 kg/hm2，拔节期和大喇叭口期各注水30 m3/hm2处理下玉米折合产量最高，为14157.6 kg/hm2。玉米抽雄期0～60 cm土层含水量各处理变化趋势相同，均表现为0～20 cm土层含水量较高，20～60 cm土层含水量相对较低，且相互间无明显差异。注水对水分利用效率的影响不显著。

Effect of Pouring Irrigation Fertilization on Yield and Soil Moisture of Corn Ditch Sowing in Double Ridge Mulched With Plastic Films

The effect of pouring irrigation fertilization on yield and soil moisture of corn ditch sowing in double ridge mulched with plastic films in dryland area of Yuzhong county was observed . The results showed that different water and fertilizer conditions had some effect on corn yield . The yield was the highest （14 157.6 kg/hm2）which base application of N 180.00 kg/hm2、P2O5 120.00 kg/hm2、ZnSO4 7.50 kg/hm2、K2O 30.00 kg/hm2 under treatment for each injection water 30 m3/hm2 at jointing stage and the large bell stage . The treatments trend of the soil moisture in layer of 0～60 cm was similar at corn tasseling stage which the soil moisture in layer of 0～20 cm was higher,the soil moisture in layer of 20～60 cm was relatively low,and there was no significant differences between each other . In addition,the effects of pouring irrigation on water use efficiency was not significant .