| 稀土在林业育苗上施用技术与效应的研究 |
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| 引用本文： | 李继承,刘永春.稀土在林业育苗上施用技术与效应的研究[J].东北林业大学学报,1992,20(3):9-19. |
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| 作者姓名： | 李继承 刘永春 |
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| 作者单位： | 黑龙江省带岭林业实验局，黑龙江省带岭林业实验局，黑龙江省带岭林业实验局，东北林业大学 林学64 |
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| 摘 要： | 为了提高苗木质量和经济效益,对东北林区4个主要造林树种、11个苗龄型进行了稀土试验。新播苗分别用450,600,750g/hm~2的稀土浸种、拌种,在苗期喷洒;换床苗用稀土浸根,剂量分别为300,450,600,750g/hm~2,在展叶期进行叶面喷洒;留床苗在展叶始期和展叶盛期分三次叶面喷洒,剂量为600,750,900,1050,1200,1350g/hm~2。并且分别测定生长量、生物量、叶绿素含量等指标,在此基础上,建立数学模型,找出各生长指标与剂量的关系,确定最佳剂量。结果表明稀土可促进苗高地径生长,增加生物产量,成苗率增加14.6％—31.3％,平均可增收8776.29元/hm~2。成本低、易于掌握,是提高苗木质量的一种有效的方法,可在林业育苗上广泛推广应用。
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| 关 键 词： | 稀土 林业 育苗 |
APPLICABLE TECHNIQUE AND EFFECTS OF RARE-EARTH ON FORESTRY SEEDLING |
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| Li Jicheng She Hua Jiao Senlin.APPLICABLE TECHNIQUE AND EFFECTS OF RARE-EARTH ON FORESTRY SEEDLING[J].Journal of Northeast Forestry University,1992,20(3):9-19. |
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| Authors: | Li Jicheng She Hua Jiao Senlin |
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| Institution: | Li Jicheng She Hua Jiao Senlin (Dailing Forestry Experimental Bureau of Heilongjiang Province) Liu Yongchun (Northeast Forestry University) |
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| Abstract: | In order to increase the quality of seedlings and economic benefits, rare-earth experiment was carried out on four main silvicultural tree species and eleven seedling agetypes of seed with rare-earth in different dosages of 450, 600 and 750 g/bm~2respectively, and sprayed during seedling stage; Transplanted 300, 450, 600 and 750g/hm~2 respectively, and sprayed on leaf surface during leaf-spreading period; Stubble seedling was sprayed three times on the leaf surface during the primary and exuberantleaf-spreading stages in different rare-earth dosages of 600, 750, 900, 1 050, 1 200 and1 350 g/hm~2, and some indexes such as the increment, biomass and chlorophyll content was determined. Form this, the relationship between growth index and the dosage was presented by establishing the mathematical model, and the optimal dosage was determined. The results show that rare-earth can improve the growth oF diameter, increase the bioproductivity and increase the mean benefit by 88 776.29 yuan / hm~2. It is an effective method for increasing the quality of seedlings for the characters such as low cost and easy to grasp, and can be widely applied in forestry seedling. |
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| Keywords: | Application of rarc-carth Forcstry sccdling Tcchniquc Effect |
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