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研究高密度(行间距0.5m×0.5m)种植下,杜英(Elaeocarpus decipiens Hemsl)、秋枫(Bischofla javanica)、小叶榄仁(Terminalia mantaly)、蓝花楹(Jacaranda mimosifoia)、海红豆(Adenantherpavonina Linn.)和盆架子(Alstonia scholaris)6个树种绿化大苗圃地土壤理化性质变化规律,探索适合各树种绿化大苗育苗的施肥配方,为绿化苗圃科学施肥提供理论依据。结果表明:(1)各树种在梧州市生长表现良好,年均胸径生长量均高于1cm,除海红豆外,其它树种树高年均生长量均高于1m。(2)6个树种对不同矿质元素需求比例不同。(3)6个树种育苗林地土壤物理性质差别大,其中,盆架子和秋枫林地土壤偏紧,蓝花楹林地土壤紧实,对于盆架子、秋枫与蓝花楹圃地,应加强松土或多施有机肥。
The effects of high density (spacing 0.5m × 0.5m), Elaeocarpus decipiens Hemsl, Bischofla javanica, Terminalia mantaly, Jacaranda mimosifoia, Adenantherpavonina Linn.) And Alstonia scholaris were studied in order to explore the fertilization formula suitable for the afforestation of green seedlings of various tree species, and to provide a theoretical basis for the scientific fertilization of greening nursery. The results showed that: (1) The species of tree species grew well in Wuzhou City, the average annual DBH growth was higher than 1 cm. Except for sea red beans, the average annual growth of other tree species was higher than 1 m. (2) The proportion of the demand for different mineral elements among the six species is different. (3) The soil physical properties of the seedlings in the six tree species vary greatly. Among them, the soils in the basin shelterbelt and autumn maple forest are tight, and the soil in the blue-flower forest land is compacted, and should be strengthened for the basin shelterbelt, autumn maple leaf and blue flower garden Loose soil or more organic fertilizer.