Interaction of water and fertilizer on seedling height for first-year growth Populus × euramericana ‘74/76’ with drip irrigation
-
摘要: 水分和氮肥是影响欧美107杨Populus euramericana 74/76生长的重要因素。以1年生欧美107杨为试验材料,采用田间裂区试验设计,研究不同灌溉、氮施入量对欧美107杨苗高的影响,并建立水苗高的水肥回归模型。结果表明:不同水肥处理下苗高之间有极显著差异(P<0.01),各因素效应顺序为氮施入量>水肥互作>灌溉量。欧美107杨苗高在300~360 cm的水肥方案为灌溉量8.45~19.25 kg株-1,施氮肥量4.57~9.12g株-1,即施尿素413.94~826.31 kghm-2;苗高在360~400 cm的水肥方案为灌溉量36.02~41.87 kg株-1,施氮肥量8.68~11.43 g株-1,即施尿素786.08~1 035.05 kghm-2。水肥优化管理方案可为定向培育1年生欧美107杨苗木提供理论依据。表3参14Abstract: Water and nitrogen fertilizer are important influences on plants. To optimize irrigation and fertilizer schemes for cultivation of high quality first?鄄year growth Populus euramericana 74/76,a split plot design with four water treatments,three nitrogen fertilizer treatments and three replications was used with ranges of seedling height growth. Water treatments were supplied at watering to 100%,80%,60% field capacity or no watering for trees;nitrogen treatments were supplied at 0,8.00 or 15.08 gtree-1. Based on a quadratic regression of seedling heights,a regressive math model between seedling heights (y) and irrigation water (x1),nitrogen (x2) was established:y=297.378+1.737x1+5.382x2-0.008x12-0.197x22-0.015x1x2. Results showed significant differences for seedling heights (P<0.01) with an influence of nitrogen > water and nitrogen > water. For seedling heights between 300 and 360 cm,the optimum combination was:irrigation water of between 8.45 - 19.25 kgtree-1 and nitrogen of between 4.57 - 9.12 gtree-1;for seedling heights between 360 and 400 cm the best combination was:irrigation of between 36.02 - 41.87 kgtree-1 and nitrogen of between 8.68 - 11.43 gtree-1. This research could contribute to water and fertilizer saving for cultivation of high quality Populus euramericana 74/76. [Ch,3 tab. 14 ref.]
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2012.01.006
计量
- 文章访问数: 3542
- HTML全文浏览量: 313
- PDF下载量: 995
- 被引次数: 0