不同水源膜下滴灌对玉米性状及地温的影响

为了研究不同水源膜下滴灌对土壤地温、玉米生育指标和产量的影响，采用田间对比试验方法，定期对试验小区的地温、土壤含水率以及玉米生育指标进行观测，得出在玉米初期地表水滴灌处理的地温高于地下水滴灌，且随着生育期的推进和土层的增加，两处理的地温差异性减小；在含水率方面两种处理的差异性不明显，综合两处理的含水率和地温，两者成反比关系，但地表水对这种关系有削弱的趋势；在产量上地表水滴灌处理比地下水高4．58％，可见地表水膜下滴灌更利于作物的生长和产量的提高。

Influence of drip irrigation under film at different water sources on trait of corn and soil temperature

In order to study the effect of film drip irrigation of different water sources on soil temperature, fertility indicator and yield of corn, by using the field contrast test method and regular observe on soil temperature, soil moisture and corn fertility indicators of the test area, the paper concluded that in the early period of corn growth, the soil temperature of surface drip irrigation treatment is higher than that of groundwater drip irrigation, and with the advance of growth period and the increase of soil layer, the ground temperature difference of two treatment decreases; the difference of two processing in moisture content is not obvious, comprehensive moisture content and temperature of two processing possess the inverse proportional relationship, but the surface water would weaken this relationship; the output of surface water drip irrigation treatment is 4.58% higher than that of groundwater drip irrigation treatment. It is visible that the surface drip irrigation under membrane has more advantages to crop growth and the increase of yield.