注灌施肥对全膜双垄沟播玉米产量及土壤水分的影响

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

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。

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 .