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目前,普遍采取直播造林的油桐林分,品种混杂,林相不齐,苗期营养低,明显影响油桐的早实丰产。随着油桐生产的发展,育苗造林(包括嫁接苗造林)日趋增多,因此,本研究的目的在于:其一,为培育油桐优质壮苗探索行之有效的技术规程;其二制定造林用实生苗和嫁接砧木苗的分级标准。我们于1983年分别在遵义。正安两县选点进行了多因子育苗试验,在此基础上,1984年遵义试点又重复试验,现将试验结果表述于后。
At present, it is common to adopt tillage trees with direct seeding afforestation. The varieties are mixed and the forest phases are not homogeneous and the nutrition at the seedling stage is low, which obviously affects the early yield of the tung tree. With the development of tung oil production, seedling afforestation (including grafting afforestation) is increasing, therefore, the purpose of this study is: First, to explore effective technical regulations to explore high-quality strong seedlings Tung; second to develop afforestation Grading standards for seedlings and grafted rootstocks. We were in Zunyi in 1983. Zheng’an two counties conducted a multi-factor seedling raising test, on this basis, in 1984 Zunyi pilot repeated test, the test results are presented later.