试验于1985—1986年在广东西江林业局下属林场及林科所苗圃进行。通过两年来的探索，初步弄清了本地区苗圃地的杂草种类和密度；
This research was carried out at the tree nurseries of both in the Forest farm and the Research Institute of Forestry subordinate to the Xi—jiang Forestry Bu'reau, Guangdong province, from 1985—1986.
对黑龙江省尚志市一面坡林场樟子松枯梢病发病区内的固定标准地进行了调查。
The Scotch pine standard plots in the shoot blight occurring area of Yimianpo Forest Farm of Sangzhi City, Heilongjiang Province were investigated.
各镇（林场）地类、林分面积与二类调查数据比较接近。
The area data of image classification was fairly close to those of second class investigation in each town.
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