太原市城区草坪微润灌溉试验研究

Micro Embellish Irrigation Experimental Study of the Lawn in Taiyuan City

在草坪一个生育期的观测时间段内,对太原市城区草坪进行了微润灌溉试验研究。结果表明:草坪长势大致相同的情况下,微润灌溉用水135 m3/667 m2,滴灌用水264 m3/667 m2,喷灌用水396 m3/667 m2,微润灌溉比后两者分别节约灌溉用水48.9%和65.9%;与滴灌相比较,微润灌溉施肥更加精准,过滤得更加充分和有效,同时相比较地面施肥,微润灌溉大幅度地减少了化肥的施用量,也减轻了农业面源污染;微润灌溉单位面积的平均综合投资成本比喷、滴灌分别节省11.3%和15.5%;微润灌溉方式下,草坪10 cm土层土壤含水量变化趋于平缓,喷、滴灌方式下,草坪25 cm土层土壤含水量变化趋于平缓。

Micro embellish irrigation experimental study of the lawn during the growth stages was carried out in Taiyuan City. The results showed that with the same growth vigor, the irrigation quantity of the micro embellish irrigation, the drip irrigation and the sprinkler irrigation were 135,264 and 396 m^3/667m^2, respectively. Compared with the latter two, the micro embellish irrigation can save water by 48.9% and 65.9%, respectively. In comparison with drip irrigation, fertilizer rate is more accurate and filter is more full and effective for micro embellish irrigation. Moreover, micro embellish irrigation greatly reduced the fertilizer application rate and the agricultural non-point source pollution. What is more, the comprehensive investment cost can be saved by 11.3% and 15.5% per unit area compared with drip irrigation and sprinkler irrigation. The changes in soil moisture content of 10 cm tended to stability under micro irrigation mode, while the changes in soil moisture of 25 cm tended smoothly under the sprinkler irrigation and drip irrigation.