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本文主要研究了民勤沙漠地区沙枣等的生理、生态特性。沙枣的抗旱、耐热能力显著地低于白刺和梭梭。但沙枣有发达的直达地下水的根系,吸收地下水分,以抵抗大气干旱和防御高温过热的危害。从沙枣的生理、生态特性来看,沙枣属于旱中生植物,大都分布在荒漠、半荒漠地区地下水位较高的内陆河流域的两岸及其下游地区。在人工营造防沙的沙枣林带时,要选择地下水位较浅,不超过3—4米或能进行灌溉的地区。
This paper mainly studied the physiological and ecological characteristics of jujube in Minqin desert area. Desert jujube drought resistance, heat resistance was significantly lower than white thorn and Haloxylon ammodendron. However, jujube has developed direct groundwater roots, absorbing underground water, in order to resist atmospheric drought and prevent the harm of high temperature overheating. From the physical and ecological characteristics of jujube, jujube belongs to the drought-growing plants, mostly distributed in the desert and semi-desert areas of the higher groundwater level inland river basins and its downstream areas. In the artificial construction of sand jujube forest, we should choose the shallow water table, no more than 3-4 meters or irrigated areas.