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林木良种工作是提高林木生产力的中心环节,必须抓紧改变用混杂种子育苗造林的现状。在从种子固取得足够的精选种子以前,天然林中采种林分的建立是很有价值的权宜办法。我省天然林日益减少,不少树种几濒绝迹,抢救基因资源,刻不容缓,建立采种林分就能达到这个目的。本文介绍的在天然林中建立采种林分的技术措施,诸如林分选择、制图、测定、疏伐、隔离、登记,以至林分经营和种子采集,可资借鉴。
Forest seed improvement work is to improve the central part of forest productivity, we must pay close attention to changing the status of hybrid seedling afforestation. The establishment of seed-bearing stands in natural forests is a valuable expedient until a sufficient selection of seeds is harvested from seeds. Natural forests in our province are declining day by day, and many species of trees are almost extinct. To rescue gene resources, it is urgent to establish natural forests for this purpose. This paper introduces the technical measures of establishing the seed-planting stand in natural forest, such as stand selection, mapping, surveying, thinning, isolation, registration, even the stand management and seed collection.