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我场地处清水河县西北部的黄河东岸。年平均气温6.95度,平均降水量403.1毫米,无霜期135—140天,多西北风。土壤多属荒沙复盖下的黑芦土和粉沙黄土,地下水位多在10米以下,土壤十分贫瘠。我场现有三万五千亩小叶杨纯林,其中五分之四属低产林分。为了提高林木效益,满足社会主义建设对木材日益增多的需要,我们从75年起,进行了改造低产林分的试验,得到初步的收效。
My field is located in Qingshuihe County, northwest of the Yellow River east coast. The average annual temperature of 6.95 degrees, the average precipitation of 403.1 mm, frost-free period of 135-140 days, more northwest wind. Soil is mostly under the cover of waste sand black loess and silt loess, groundwater level more than 10 meters, the soil is very barren. My field has 35,000 acres of Populus euphratica forest, of which four-fifths are low-yield stands. In order to improve the efficiency of trees and meet the increasing demand for timber from socialist construction, we have been carrying out the experiment of rebuilding low-yielding forests since 1975, and have achieved initial success.