| 杨桐苗期施磷效应研究 |
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| 引用本文： | 李梅,吴江,吴家胜,吴家森.杨桐苗期施磷效应研究[J].浙江农林大学学报,2010,27(2):223-227. |
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| 作者姓名： | 李梅 吴江 吴家胜 吴家森 |
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| 作者单位： | 1.浙江林学院 林业与生物技术学院，浙江 临安，311300 |
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| 摘 要： | 采用盆栽试验，装风干土2.5 kg盆－1，研究了不同施磷水平对1年生杨桐Cleyera japonica苗木各项生长、生理指标及叶片含磷量的影响。结果表明:①施磷（P2O5）量在0 ～ 0.500 g盆－1范围内，杨桐各项生长、生理指标均随施磷量的增加而增加。当施磷量超过0.500 g盆－1后，各项生长、生理指标均表现下降趋势。②杨桐苗木叶片全磷含量，在适量的供磷范围内随施磷量的增加而增加，含磷量最高出现在0.500 g盆－1，超过此值后，随施磷量的增加而逐渐下降。③杨桐苗木各项生长指标与施磷量之间存在二次函数关系。综合本试验条件下各处理杨桐苗木施肥生长及生理效应可知，杨桐苗期最佳施磷量为0.441 ～ 0.603 g盆－1。图2表5参11
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| 关 键 词： | 森林培育学 植物营养 杨桐 磷肥 施肥 |
Phosphorus fertilization with Cleyera japonica seedlings |
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| LI Mei,WU Jiang,WU Jia-sheng,WU Jia-sen.Phosphorus fertilization with Cleyera japonica seedlings[J].Journal of Zhejiang A&F University,2010,27(2):223-227. |
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| Authors: | LI Mei WU Jiang WU Jia-sheng WU Jia-sen |
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| Affiliation: | 1.School of Forestry and Biotechnology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China |
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| Abstract: | Based on a pot experiment，the effects of phosphorus fertilization on growth and physiological indexes and phosphorus content in leaves of one-year-old Cleyera japonica seedlings were studied. Seven P（P2O5） levels were set，0（ck），0.125，0.250，0.375，0.500，0.625 and 0.750 gpot-1. Results showed that （1） with increasing levels of P from 0 to 0.500 gpot-1，growth and physiological indexes in C. japonica seedlings increased，whereas with P increases over 0.500 gpot-1，all indexes decreased. Also，（2） P in leaves increased with increasing levels of P from 0 to 0.500 gpot-1 but decreased gradually with further P. Finally，（3） quadric relationships between growth indexes and P were noted. Based on growth and physiological indexes for one-year-old C. japonica seedlings，proper application of P was from 0.441 to 0.603 gpot-1.［Ch，2 fig. 5 tab. 11 ref.］ |
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