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为探索杨树旱地造林丰产技术,1985年春季,我们承担河北省林业厅的科研项目,对杨树旱地造林丰产技术进行了试验研究。两年初步看出覆盖地膜和叶面喷肥对提高造林成活率和林木生长量的作用。 一、试验地概况 试验地设在望都县太和庄、威县魏寨村等地。前者面积100亩,为脱盐化潮土,质地粘重,造林前为次农耕地,土壤状况见表1;后者面积200亩,上层为粉砂,下层为粘土,并相间出现,造林前为半荒地。
In order to explore high-yielding techniques for afforestation on poplar drylands, in the spring of 1985, we undertook scientific research projects of the Forestry Department of Hebei Province and conducted experiments on high-yielding techniques of afforestation on dry land of poplar trees. The preliminary results in two years showed that the effects of plastic film mulching and foliar spray on increasing the survival rate of afforestation and the growth of trees. First, the pilot to test the general situation in Wangdu County, too village, Weixian Wei Zhaicun and other places. The former covers an area of 100 mu, which is desalinated alluvium. Its texture is heavy and heavy. Before afforestation, it is sub-agricultural land. The soil condition is shown in Table 1. The latter covers an area of 200 mu. The upper is silt and the lower is clay. Half-wasteland.