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目前,在森林苗圃中采用聚乙烯覆盖物具有很大意义。世界很多国家都在研究这一问题。与其他聚合物和玻璃不同,聚乙烯薄膜很轻,价钱便宜,对紫外线和红外线有很高的穿透能力,对植物具有一系列有益特性。伊凡杰耶夫卡苗圃在5年期间内,在可搬移的聚乙烯复盖物中进行了松树、云杉、落叶松实生苗的培育试验。这些试验能够研究覆盖物的微气候,实生苗的生长特性。试验的结果表明,在聚乙烯覆盖物中,对植物形成了有利的微气候。其特点是,土
At present, the use of polyethylene coverings in forest nurseries is of great significance. Many countries in the world are studying this issue. Unlike other polymers and glass, the polyethylene film is light, inexpensive, has high penetration into UV and IR, and has a number of beneficial properties for plants. Ivanyevka Nursery During a five-year period, seedlings of pine, spruce and larch were nurtured in a removable polyethylene cover. These tests are able to study the microclimate of the cover and the growth characteristics of the seedlings. The results of the tests show that in the polyethylene cover a favorable microclimate is formed for the plants. It is characterized by soil