论文部分内容阅读
本调查主要研究了陇东黄土高原沟壑区泡桐幼树日灼的发生规律,提出了预防措施,使泡桐幼树免受日灼危害。一、调查研究概况关于日灼的研究,目前虽有报道,但资料甚少,且对日灼发生的原因说法尚不一致。为了探索泡桐日灼发生规律和相应的预防措施,使泡桐幼树免遭日灼的危害,我们从1982年秋开始在泾川县官山林场、县苗圃、平凉地区林业处院内进行了泡桐幼树日灼症状、灼斑方位以及发生因子的调查,提出了预防技术措施,完成了《浅谈泡桐幼树日灼》的初稿,1983年
This survey mainly studied the law of the occurrence of the sunlit skin of young Paulownia trees in gully area of the Longdong Loess Plateau and put forward the precautionary measures to prevent the young trees of Paulownia from sunburn. First, the survey of research About sunburn research, although there are reports, but very little information, and the reason for the sunburn is not the same. In order to explore the law of paulownia Sunburn and the corresponding precautionary measures to prevent Paulownia young trees from sunburn damage, we started in the autumn of 1982 in Jingchuan County Guanshan Forest Farm, County nursery, Pingliang Forestry Department of Paulownia saplings Sunburn symptoms, the location of the sunburn and the occurrence of factors, put forward preventive measures, completed the “Paul paulownia sapling day,” the first draft, 1983