文章摘要
朱报著,廖焕琴,杨晓慧,杨会肖,潘 文,王裕霞,张卫华,徐 放.广东含笑苗期生长基质筛选研究[J].广东农业科学,2019,46(7):38-45
广东含笑苗期生长基质筛选研究
Research on Selection of Cultivation Substrate forMichelia guangdongensis Seedlings
  
DOI:10.16768/j.issn.1004-874X.2019.07.006
中文关键词: 广东含笑  苗期  配方基质  基质理化指标  生长指标
英文关键词: Michelia guangdongensis  seedling stage  formulated substrate  substrate physicochemical index  growth index
基金项目:中央财政林业科技推广示范资金项目(﹝ 2015 ﹞ GDTK-02 号)
作者单位
朱报著,廖焕琴,杨晓慧,杨会肖,潘 文,王裕霞,张卫华,徐 放 广东省森林培育和保护利用重点实验室 / 广东省林业科学研究院广东 广州 510520 
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中文摘要:
      【目的】通过开展广东含笑苗期18种基质处理栽培试验,比较不同基质对广东含笑苗期生长的影 响,以期筛选出育苗效果较好、容重较小、配制简便、成本较低的环保型基质,为广东含笑苗木培育和应用提 供科学依据。【方法】对不同配方基质的理化性质及基质中广东含笑苗的生长状况进行研究,运用生长量多重 比较和Pearson相关性分析等方法对不同配方基质的育苗效果进行综合评价。【结果】广东含笑经过8个月不同 配方基质处理栽培,18种基质的容重和总孔隙度分别为0.85~1.45 g/cm3和35.93%~54.44%。pH为4.47~7.76,各基 质的有机质含量、全氮含量和有效磷含量分别为5.65~62.9 g/kg、0.3~2.740 g/kg、12.7~138.0 mg/kg;不同配方基 质对广东含笑苗高和冠幅生长的影响存在显著差异;苗高和冠幅与SPAD值、叶面积与容重、阳离子交换量CEC 和电导率EC呈正相关,与土壤总孔隙度和pH值呈负相关;广东含笑适合在容重大,pH值较小,有机质、全N和 速效钾含量低的基质中生长。【结论】处理M08(黄心土∶蛭石比例为3∶2)和M07(黄心土∶珍珠岩比例为 3∶2)的综合生长量分别比对照高出10.19%以上,容重分别比对照低9.72%以上,建议以上两种基质为广东含笑 育苗的首选基质。
英文摘要:
      【Objective】In order to select the cultivation substrates suitable for Michelia guangdongensis seedling, the effects of 18 kinds of substrates on the growth of the M. guangdongensis seedlings were compared to screen out the environmental friendly substrates with better seedling growth,smaller bulk density,simple preparation and lower cost. This study provides a scientific basis for the cultivation and application of the M. guangdongensis seedlings.【Methods】 The physicochemical properties of different substrates and the growth of M. guangdongensis seedlings were studied. The effects of different growth rates were evaluated comprehensively by multiple comparisons of growth and pearson correlation analysis.【Results】M. guangdongensis was treated with different substrates for 8 months. The bulk density and total porosity of the 18 substrates were 0.85-1.44 g/cm3 and 35.93%-54.44%,respectively. The pH was 4.47-7.76,and the organic matter content, total N content and effective P content of the substrates were 5.65-62.9 g/kg, 0.302- 2.740 g/kg, and 12.7-138.0 mg/kg,respectively. There was significant difference between the growth of seedling height and crown width,and the height and crown width were positively correlated with the SPAD value,the leaf area and the bulk density,the cation exchange capacity CEC and the conductivity EC, and negatively correlated with the total soil porosity and pH value. M. guangdongensis is suitable for growth in substrates with large bulk density, low pH, low organic matter, total N and available K content.【Conclusion】 The comprehensive growth of M08 (yellow soil∶vermiculite=3∶2) and M07 (yellow soil∶perlite=3∶2) was 10.19% higher than that of the control, and the bulk density was 9.72% lower than that of the control. It is suggested that the two substrates mentioned above are the preferred substrates for M. guangdongensis.
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