GAO Zhu,WU Jian-rong,MA Huan-cheng.Effects of Fertilization on the Growth of Two-year Old Stand of Ceiba pentandra in Dry-hot Valley of Honghe River[J].Research of Soil and Water Conservation,2012,19(02):95-100.
红河干热河谷2年生吉贝人工幼林施肥效应研究
- Title:
- Effects of Fertilization on the Growth of Two-year Old Stand of Ceiba pentandra in Dry-hot Valley of Honghe River
- 分类号:
- S725.5
- 摘要:
- 为明确吉贝幼林施肥配比及施肥量，采用单因素及N，P，K三因素L9（34）正交设计法，研究了施肥对2a生吉贝造林成活率及生长促进的影响。结果表明：（1）施基肥导致吉贝造林平均成活率下降6.92%以上，尿素200g/株处理与CK0差异显著；（2）施用复合肥400g/株、尿素300g/株处理树高、地茎增量与CK1差异显著，100g/株N+100g/株P+50g/株K+200g/株N+100g/株P+150g/株K组合树高、地茎、冠幅与CK1差异极显著，分枝数与CK1差异显著，除300g/株N+200g/株P+150g/株K组合增效指数小于尿素300g/株处理外，其余组合增效指数大于复合肥400g/株、尿素300g/株处理；（3）极差R比较认为，P肥对树高生长显著，N肥对地茎和冠幅生长较好，而分枝数第1年施K肥较P肥、N肥好，第2年施P肥较K肥、N肥好；（4）N，P，K组合较单因素肥效显著，肥效指数大小可作为吉贝幼林施肥生长快慢的衡量指标。可见，干热河谷吉贝造林以不施基肥为宜，尤其不能施尿素，幼林追肥经济效益显著，1～2a生林可采用100g/株N+100g/株P+100g/株K或200g/株N+100g/株P+150g/株K肥料组合以及复合肥400g/株、尿素300g/株单施。
- Abstract:
- To understand the impact of fertilization with different types of the amounts of fertilizers on survival rate and growth of two-year old stand of Ceiba pentandra,the single-factor and the N,P,K three factors L9 (34) orthogonal design method were used.The results showed that:(1) it caused the average of plantation survival rate fell by 6.92% or more with fertilizers,there were a significant difference between treatment of urea with 200g per plant and control;(2) the treatments of strain with 400 g per plant or urea with 300g per plant were significant different from control in height increment and diameter increment,but the groups with 100g per plant N+100g per plant P+50 g per plant K and 200g per plant N+100g per plant P+150g per plant K had extremely significant difference relative to the control in height,diameter,and crown.It’s significant difference in branches increment between treatments and control.The remaining groups were higher than treatment of strain with 400g per plant and urea with 300g per plant except that 300g per plant N+200g per plant P+150g per plant K combination was less than treatment of urea with 300g per plant in fertilizer factor;(3) it has significance on tree growth by P fertilizer through range contrast,but with better growth on diameter and crown by N fertilizer.It was better increment in branches by K fertilizer than P fertilizer and N fertilizer in 1-year old trees,but P fertilizer has the better effect than K,N fertilizer in 2-year trees;(4) effect of the combination of N,P,K fertilizers was significantly higher than single-factor,fertilizer factor can be used to measure fertilization on the growth speed of stand of Ceiba pentandra.As a result,it is better for Ceiba pentandra forest culture with no-fertilizers,especially not fertilizer urea.It has significant economic benefits with topdressing in young Ceiba pentandra plantation,which can be used the combinations of 100g per plant N+100g per plant P+100g per plant K or 200g per plant N+100g per plant P+150g per plant K,and can be used with 400g per plant strain or 300g per plant urea in 1~2 years old forest.
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备注/Memo
收稿日期:2011-9-7;改回日期:2011-12-28。
基金项目:林业公益性行业科研专项(2011104034);林业科学技术推广项目([2011]35号)资助;云南省高校科技创新团队建设项目
作者简介:高柱（1981- ）,男,江西上饶人,硕士,助理研究员,主要从事林木栽培及育种研究。E-mail:jxaugz2008@126.com
通讯作者:马焕成（1962- ）,男,湖南武岗人,教授,从事困难地段造林和植被恢复研究。E-mail:mahuancheng@yahoo.com.