地埋滴灌不同覆盖对土壤水分变化规律的影响

Effects of Different Mulches of Buried Drip Irrigation on Soil Water Variation

为了了解地埋滴灌不同覆盖对土壤水分变化规律的影响,设置玉米生长过程中不同覆盖条件下的地埋滴灌试验区,采集土壤水分数数据,对不同覆盖条件下的土壤水分变化进行分析。结果表明,地埋滴灌不同覆盖对土壤水分变化规律有着显著影响,在漫灌条件下,不覆膜灌溉均较覆膜灌溉土壤含水量高,玉米拔节期该现象最显著,随着玉米生长的推进,该现象逐渐减弱至消失;在浅埋和深埋滴灌条件下,不覆膜灌溉基本较覆膜灌溉土壤含水量高。该试验漫灌灌溉制度适宜,浅埋滴灌和深埋滴灌灌溉制度需继续优化。

In order to understand the influence of different coverage of buried drip irrigation on the soil water change rule,experimental areas of buried drip irrigation under different coverage conditions were set up during the growth of corn,and soil water fraction data were collected to analyze the soil water change under different coverage conditions.The results showed that different mulching under subsurface drip irrigation had significant effects on soil water variation.Under the condition of flood irrigation,soil water content under non-mulching irrigation was higher than that under mulching irrigation,and this phenomenon was most significant at the jointing stage of maize,which gradually weakened to disappear with the advancement of maize growth.Under shallow and deep drip irrigation conditions,the soil water content of non-mulching irrigation was higher than that of mulching irrigation.The flood irrigation system of the experiment is suitable,and the shallow and deep drip irrigation irrigation systems need to be further optimized.