| 袁莲珍,许林红,钟 萍,陈 勇,封庆红.氮素施肥对6月龄山桂花苗木生长的影响[J].林业调查规划,2025,50(2):23-27 |
| 氮素施肥对6月龄山桂花苗木生长的影响 |
| Effects of Nitrogen Fertilization on Growth of Six-Month-OldParamichelia baillonii Seedlings |
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| DOI： |
| 中文关键词: 山桂花 施氮量 生长量 生物量 指数施肥 |
| 英文关键词: Paramichelia baillonii nitrogen application growth biomass exponential fertilization |
| 基金项目:普文试验林场2024 年度巩固提升大规格苗木培育补助项目(云林复〔2024〕318 号). |
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| 中文摘要: |
| 以6 月龄山桂花苗木为材料,采用完全随机区组设计,设置5个处理(对照CK、常规施肥CF、
指数施肥EF1、EF2、EF3),施氮总量分别为0、0.5、0.2、0.5、1.0 g/ 株,施氮20次,间隔7 d,施氮后每
月测定生长量,在最后一次生长量测定后,分别选取不同处理的苗木各5 株,重复3次,测其生物
量。结果表明,施氮明显地提高了山桂花苗木的苗高、地径及生物量的生长。指数施肥(EF3) 的山
桂花苗木平均苗高最高,为55.67 cm,平均地径最粗,为0.73 cm,地下部分生物量、地上部分生物
量及全株生物量最大,分别为1.625、7.242、8.867 g。在苗圃培育壮苗过程中,宜采用指数施肥。 |
| 英文摘要: |
| A completely randomized block design was conducted on six-month-old seedlings of Paramichelia
baillonii. Five treatments were designed including control (CK), conventional fertilization (CF) and exponential
fertilization treatment (EF1, EF2 and EF3), with N application rates of 0, 0.5, 0.2, 0.5 and
1. 0 g/seedling, with 20 times nitrogen application at 7-day interval. The monthly growth was measured
after nitrogen application. 5 seedlings of different treatments were selected and repeated 3 times to measure
their biomass when the last growth measurement had been done. The results showed that nitrogen application
significantly increased the height, diameter and biomass of Paramichelia baillonii seedlings. The
exponential fertilization (EF3) had the highest average seedling height at 55. 67 cm, and the thickest average
diameter at 0.73 cm. The underground biomass, aboveground biomass, and whole plant biomass
with the exponential fertilization(EF3) were the highest, at 1.625, 7.242, and 8.867 g. To sum up,
the process of cultivating strong seedlings should adopt the exponential fertilization. |
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