滴灌施肥条件下107杨幼林N、P、K养分吸收量与施肥量研究
杨树以其生长迅速、产量大、分布广、适应性强、易繁殖、易更新等特性，成为我国主要的速生造林树种，常作为短轮伐期工业用材来经营；同时，它在解决我国用材短缺和生态问题等方面也起着不可忽视的作用。在营造速生丰产林的过程中，施肥是一项关键措施，多项研究结果表明，施肥对杨树树高、胸径的生长具有促进作用，不同施肥处理对杨树生长的影响不同。水和肥（主要是N肥）是影响杨树生长的重要因素，一直以来，...
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| Published in | 林业科学研究 Vol. 28; no. 3; pp. 426 - 430 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国林业科学研究院世界银行项目办公室,北京,100091%大兴区林场,北京,102602
2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1498 |
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| Summary: | 杨树以其生长迅速、产量大、分布广、适应性强、易繁殖、易更新等特性，成为我国主要的速生造林树种，常作为短轮伐期工业用材来经营；同时，它在解决我国用材短缺和生态问题等方面也起着不可忽视的作用。在营造速生丰产林的过程中，施肥是一项关键措施，多项研究结果表明，施肥对杨树树高、胸径的生长具有促进作用，不同施肥处理对杨树生长的影响不同。水和肥（主要是N肥）是影响杨树生长的重要因素，一直以来， |
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| Bibliography: | poplar plantation ; drip irrigation ; fertilization ; N, P, and K nutrient 11-1221/S Taking ‘107＇ poplar clone （ Populus x euramericana cv. ‘74/76＇ ）plantation cultivated with surface drip irrigation at sandy land of ancient Yongding River bed in Beijing as the research object, the effects of N, P, and K absorption and accumulation as well as different N fertilization gradient on the growth of 2- and 3-year-old ‘107＇ poplar clone were studied so as to determine the optimum amount of fertilization for young （2 or 3 year-old） poplar. The results showed that ： （ 1 ） The nutrient uptake of 1- to 3-year-old ＇ 107＇ poplar clone increased year by year, the uptake in the third year was significantly greater than that in the previous two years, and the demand for various nu- trients in the order of N 〉 K 〉 P. （2） The growth of 2-year-old ‘107＇ poplar clone showed no significant difference among various treatments, the minimum N fertilizer （30 g per tree） was the best, the corresponding P was 15 g per tree, K 20 g per tr |
| ISSN: | 1001-1498 |