于2011—2013年在甘肃省定西唐家堡村连续三年进行田间定位试验，以裸地为对照，研究不同地膜覆盖方式和施肥对玉米农田土壤水分特征、子粒产量及水分利用效率的影响。结果表明：全膜双垄沟播较裸地0～200 cm 土层土壤含水量明显增加，其中深层60～200 cm 土层土壤含水量提高24．9％，水分利用效率显著提高129．9％～188．3％，丰水年效果更突出，配施 N、P、K 肥（N、P2O5和 K2O 的用量分别为225、120、60 kg·hm －2）时，玉米子粒产量和水分利用效率分别达到10430 kg／hm －2和31．9 kg·mm －1·hm －2，较当地农民习惯施肥分别提高10．2％和11．5％。说明全膜双垄沟播种植有利于纳雨蓄墒，具有集水高效利用和增产的效果，配套平衡施肥效果更佳。%A field examination was carried out in Tangjiabu Village,Dingxi,Gansu from 2011 to 2013 to study soil water content in 0 ~200 cm layer,yield and water use efficiency (WUE)of corn with different film-mulching cultivations and balanced fertilizations (no mulch as control)in the dry-land area.The results showed that whole-film mulching with double-furrow sowing cultivation approach could significantly increase soil water content in 0 ~200 cm soil layer and wa-ter use efficiency,which was more apparent in the years with more precipitations,resulting in an increase of 24.9% in water content,and an elevation of 129.9% ~188.3% in WUE.While the nutrient consumptions on N,P2O5 and K2O were 225,120 kg·hm -2 and 60 kg·hm -2,respectively,maize yield and WUE reached 10 430 kg·hm -2 and 31 .9 kg· mm -1·hm -2,10.2% and 11 .5% higher than the regular approach implemented by local farmers.In conclusion, whole-film mulching with double-furrow sowing cultivation was advantageous to conservation use of rainwater and accumu-lation of soil moisture,and to achieve efficient use of water and to enhance production,which could be improved further by balanced fertilization.
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