| 油茶落叶分解对土壤养分及药用菊花生长的影响 |
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| 引用本文： | 渠心静,李建安,夏宇飞,邓小丽,刘鹏祺,袁军.油茶落叶分解对土壤养分及药用菊花生长的影响[J].安徽农业大学学报,2018,45(5):861-866. |
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| 作者姓名： | 渠心静 李建安 夏宇飞 邓小丽 刘鹏祺 袁军 |
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| 作者单位： | 中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004;中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004;中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004;中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004;中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004;中南林业科技大学经济林培育与保护省部共建教育部重点实验室,长沙,410004 |
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| 基金项目： | 湖南省重点研发项目(2016NK2153, 2017NK2201)资助。 |
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| 摘 要： | 为探究林药套种模式下主栽树种油茶落叶分解规律及其对土壤养分含量及药用菊花生长的影响，以油茶落叶和杭菊扦插苗为试验材料，采用分解袋法检测油茶落叶的分解及养分释放动态，以不添加油茶落叶为对照，取75、130、185和240 g油茶落叶与2 kg土壤混匀作为处理1、处理2、处理3和处理4，采用盆栽试验研究不同油茶落叶施入量对杭菊生长及其养分含量的影响。结果表明，油茶落叶在前4个月分解速度较快，分解量达28.73%，后期分解速度缓慢；氮和磷在分解前期出现富集现象，钾在前3个月释放了总量的78.13%；土壤铵态氮、硝态氮含量随油茶落叶施入量增加而显著降低，各处理有效磷含量显著高于对照组，处理2的速效钾含量最低；杭菊根、茎、叶氮含量随油茶落叶添加量增加而显著降低；油茶落叶对杭菊前期生长促进作用显著，处理4的地径、苗高和SPAD值分别是对照组的1.40倍、1.44倍和2.07倍；4个处理菊花单株干、鲜重分别较对照组提高了78.04%～128.78%和38.50%～118.15%，单株产花量也显著高于对照。研究表明油茶落叶对间种杭菊生长及菊花产量均有显著促进作用，但油茶落叶分解速率以及氮磷钾养分释放速率不均衡，不能满足菊花的生长发育需求，应注意人工施肥以保证养分充分供应。
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| 关 键 词： | 油茶 落叶分解 套种 杭菊 养分含量 |
| 收稿时间： | 2018/3/9 0:00:00 |
Effects of decomposition of senesced oil-tea leaves on soil nutrient content and growth of intercropping Chrysanthemum morifolium |
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| QU Xinjing,LI Jianan,XIA Yufei,DENG Xiaoli,LIU Pengqi and YUAN Jun.Effects of decomposition of senesced oil-tea leaves on soil nutrient content and growth of intercropping Chrysanthemum morifolium[J].Journal of Anhui Agricultural University,2018,45(5):861-866. |
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| Authors: | QU Xinjing LI Jianan XIA Yufei DENG Xiaoli LIU Pengqi and YUAN Jun |
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| Institution: | Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004,Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004,Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004,Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004,Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004 and Key Laboratory of Cultivation and Protection for Non-wood Forest Trees Ministry of Education, Central South University of Forestry and Technology, Changsha 410004 |
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| Abstract: | In order to investigate the decomposition pattern of leaf litter from the main planting tree species of oil-tea, and its effect on soil nutrient content and the growth of medicinal chrysanthemum (Chrysanthemum morifolium) intercropped, a pot experiment was conducted by mixing oil-tea leaf litter into soil as substrate for growing cuttings of chrysanthemum. Decomposition bag method was used to monitor decomposition and nutrient release of oil-tea leaf litter. Five treatments were created by mixing 0 (control), 75, 130, 185, and 240 g of oil-tea leaf litter with 2 kg of soil, labeled as Treatment 1, Treatment 2, Treatment 3, and Treatment 4, respectively. The results showed that the decomposition rate of oil-tea leaf litter was faster in the first four months with a dry mass loss of 28.73%; while it was slower in the later stage. Nitrogen and phosphorus were enriched in the early stage of decomposition, and potassium released 78.13% of the total amount in the first three months. The content of ammonium and nitrate nitrogen in soil decreased significantly as oil-tea leaf litter application increased. The content of available phosphorus was significantly higher in treatments than in the control. The content of available potassium in Treatment 2 was the lowest. The nitrogen contents in the root, stem and leaf of chrysanthemum decreased significantly as the application of oil-tea leaf litter increased. Oil-tea leaf litter significantly promoted the growth of chrysanthemum in the early stage. The ground diameter, seedling height and SPAD value of Treatment 4 were, respectively, 1.40, 1.44, and 2.07 times as high as in the control. The dry and fresh weight per plant of chrysanthemum of the four treatments increased by 78.04%-128.78% and 38.50%-118.15%, respectively, compared with |
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| Keywords: | Camellia oleifera leaf litter decomposition intercropping Chrysanthemum morifolium nutrient content |
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