民勤县三坪口国营苗圃的自然条件很差,三面被砂丘包围,土壤为砂质土,地表有碱皮,中间有油砂。过去沙枣最高亩产为3,200株。苗木高30—80公分,根径4—10公厘。今年培育140亩沙枣,其中有1.5亩亩产达94,500株。目前沙枣苗根径已达8公厘,苗高72公分。此 Minqin County Sanpingkou state nurseries of poor natural conditions, surrounded by sand on three sides, the soil is sandy soil, the surface of the alkaline skin, the middle of the oil sands. Past jujube the highest yield of 3,200 plants. Seedlings high 30-80 cm, diameter 4-10 mm. This year to cultivate 140 acres of sand date, of which 1.5 acres of mu produce 94,500. At present, jujube root diameter has reached 8 mm, height 72 cm. this