通过田间试验,研究了膜缝沟灌对夏玉米生育期内土壤含水率、土壤温度以及生长发育状况的影响.结果表明:覆膜后可以提高土壤含水率,0 ～40 cm土壤含水率覆膜平均高于露地5.5%,40～80 cm覆膜平均高于露地2.9%,80～120 cm 覆膜平均高于露地1.3%;覆膜后在耕作层内土壤温度高于露地,且8∶00、14∶00、20∶00三个时刻,土壤温度变化幅度分别为1.13℃、0.57℃和0.34℃,均低于露地对应的2.06℃、1.38℃和1.01℃;在相同灌水量条件下,夏玉米株高高于露地49 cm,干物质最大相差126 g/株. 研究表明覆膜后有利于夏玉米的生长发育.%Compared with the open field test, we studied the effect of film slit furrow irrigation on soil moisture content, soil temperature and status of summer maize during growing period. The result showed that the so il moisture content is higher than the open field when covered by plastic film, and, on average, it is 5.5% higher in 0～40 cm layer, 2.9% higher in 40～80 cm layer and 1.3% higher in 80～120 cm layer. In addition, after film covering t he soil temperature in tillage layer is higher than that in the open field, and the varying range of soil temperature with film covering at 8∶00, 14∶00 an d 20∶00 was 1.13℃, 0.57℃ and 0.34℃, respectively, comared to 2.06℃, 1.38℃ and 1.01℃ in open field. Under the same irrigation conditions, the plant height and dry matter of summer maize is 49 cm and 126 g/plant respectively higher than that in the open field. So film covering is conducive to the growth of sum mer maize.
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