| Relationship between orchard herbage biomass and soil nutrient factors in Weibei |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2016.05.26 |
| Key Words: orchard herbage nutrient factors herbage biomass path analysis |
| Author Name | Affiliation | | FANG Kai-kai | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHANG Yu-dai | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Shu | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Zhi-kang | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | DU Yi-fei | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Hui-ke | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China |
|
| Hits: 1739 |
| Download times: 1052 |
| Abstract: |
| Interplanting herbage in orchard, an advanced orchard management mode, plays a significant role in improving orchard soil conditions. By using the methods of Person correlation and path analysis, this paper studied herbage biomass and soil nutrient factors under six species of management mode in apple orchards, including clear tillage mode, Trifoliurn repens L. mode, Trifolium pretense mode, Coronilla varia L. mode, Dactylis glomerata L. mode and Lotuscorniculatus mode. The relationship between herbage biomass and soil nutrient factors was thereby explored, providing a reference for the rational choice of orchard herbage planting and its effective management. The results showed that total biomass by five herbages was each between 150～300 g·m-2. Coronilla varia L. had the maximal total biomass. However, Trifoliurn repens L. resulted in the minimum. The order for biomass from high to low by different modes was Coronilla varia L.＞Lotuscorniculatus＞Dactylis glomerata L.＞Trifolium pretense＞Trifoliurn repens L. From the path analysis, the sequence of soil properties based on their direct effect on herbage biomass was: Bulk density＞Total N＞Available K＞Organic carbon＞Nitrate nitrogen＞Ammonium nitrogen＞Available P, meaning that direct (0.847 and 0.917, respectively) and indirect path coefficient of soil bulk density and total nitrogen were both the highest. These were the most important factors that affect herbage biomass. Available potassium and organic carbon were the secondly important factors that influence the herbage biomass, whereas nitrate nitrogen, ammonium nitrogen and available phosphorus had weak effects on herbage biomass. |
|
|
|