研究了地埋式滴灌毛管埋深及间距对大田玉米产量的影响。结果表明，苗期毛管埋深30 cm时耗水较高，有利于玉米苗期和前期的生长；拔节期到大喇叭口期，毛管间距80 cm时耗水量较低；在灌浆期，间距60 cm时耗水最大，说明在玉米灌浆期，由于灌水补充和降水的增多，各处理耗水量达到最大值。毛管埋深30 cm、间距为60 cm时，滴头流量为1.2 L/h、1.6 L/h处理的产量均达最高，分别为11 670、15 375 kg/hm2，因此毛管埋深为30 cm、间距为60 cm为大田玉米地埋式滴灌最优组合模式。同一毛管铺设方式下，在灌水定额和灌水时间一致的情况下，滴头流量为1.6 L/h时的产量显著高于滴头流量为1.2 L/h的处理。

Under the condition of buried drip irrigation， the effect of different capillary depth and spacing on soil water consumption and corn yield during the whole growth period of field corn is studied. The results show that the water consumption is higher at the seedling stage with capillary depth of 30 cm， which indicate that it is conducive to the growth of seedling and early stage of corn. From the jointing stage to the bell-mouthed stage， the water consumption is lower when the capillary spacing is 80 cm. The water consumption of the 60 cm spacing is the largest， which indicate that in the corn filling stage， supplemented by irrigation and precipitation increased， the water consumption of each treatment reach the maximum. When the depth of capillary tube is 30 cm and the spacing is 60 cm， the dripper flow rate is 1.2 L/h and 1.6 L/h， the output of yieldis the highest， which is 11 670 kg/hm2 and 15 375 kg/hm2， respectively. Therefore， the capillary depth of 30 cm and the spacing of 60 cm is the optimal combination mode of field corn suitable for buried drip irrigation. Under the same capillary tube laying method， when the irrigation quota and irrigation time remain the same， the yield on dripper flow of 1.6 L/h is significantly higher than that at dripper flow of 1.2 L/h.

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