矿区排土场植被恢复节水灌溉措施研究

Study on the water-saving irrigation for vegetation restoration in refuse dump area of mine

通过野外小区观测试验结合室内分析,对不同边坡植被的需水特性和节水型灌溉措施进行了研究。结果表明,对排土场坡面植被恢复进行的3种灌水方式,地面滴灌是最适宜的灌水方式,3种牧草在非充分灌溉条件下的滴灌措施分别为:苜蓿灌水次数8次,灌溉定额192mm(1 920m3/hm2);沙打旺灌水次数7次,灌溉定额168mm(1 680m3/hm2);披碱草灌水次数9次,灌溉定额216mm(2 160m3/hm2)。该研究成果可为类似区域的相关研究和应用提供科学依据。

The water requirement and water saving irrigation system for vegetation restoration in refuse dump area of mine were studied through the field investigation and indoor analysis.The results showed that drip irrigation was the optimum out of 3 irrigation systems.Under the condition of non-sufficient irrigation,the proper drip irrigation system for alfalfa was 8 times and 192 mm(1 920 m 3/ha)of irrigation norm,7 times and 168 mm(1 680 m 3/ha)for Astragalus adsurgens,and 9 times and irrigation quota is 216 mm(2160 m 3/ha)for Elymus dahuricus.