Effect of Phosphorus Levels on Root Development,Seedling Growth and Photosynthetic Performance
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2019年04
- Page:
- 52-58
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Phosphorus Levels on Root Development,Seedling Growth and Photosynthetic Performance
- Author(s):
- TIAN Zhigang1; WANG Pengfei2
- (1.College of Biotechnology,Jinzhong Vocational and Technical College，Jinzhong，Shanxi 030600；2.College of Horticulture,Shanxi Agricultural University，Jinzhong，Shanxi 030801)
- Keywords:
- walnut seedling; phosphorus level; root morphological; chlorophyll; photosynthetic performance
- PACS:
- -
- DOI:
- 10.11937/bfyy.20182460
- Abstract:
- Walnut seedling was used as material,the soil culture experiments were employed to study the effect of different levels on the root morphology and activity,chlorophyll contents,photosynthetic characteristics of walnut seedling,to explore the effect of different phosphorus levels on the root absorption capacity,seedling growth and leaf photosynthesis capcity and provide a scientific foundation of the determination of soil phosphorus diagnostic criteria and phosphorus application for young trees.The results showed that with the phosphorus nutrition levels increasing,the length,surface area,volume,diameter and activity of the roots,plant height and ground diameter,chlorophyll contents,photosynthetic characteristics of walnut seedling increased obviously.The above index of phosphorus levels higher 45 mg?kg-1 processing decreased significantly.The length,surface area,volume and diameter of the roots increased with increasing phosphorus at low levels.The activity and absorption capacity of root increased significantly (P<0.01).Moreover,suitable amount of phosphate fertilizer enhanced the accumulation of dry matter and growth of walnut seedling.In addition,the appropriate phosphorus enhanced the chlorophyll content and net photosynthetic rate,as well as the assimilating capability of the walnut seedling.Comprehensive analysis,the amount of phosphorus for seedling was determined to be 45 mg?kg-1.At this rate,the development of walnut seedling was healthy with strong roots,growth fast-speed,and desirable photosynthetic functions.Therefore,this standard should be used for the management of phosphate fertilizer when cultivating walnut seedlings.
Last Update: 2019-03-22