Effect of apple pruning branch returning treatments on soil properties and plant photosynthetic performance
In this study,apple branches after winter pruning were crushed,composted and charred.These treated branches were,and then added to the substrate of potted Malus baccata at a rate of 3%of the pretreatment weight to investigate the effects of different treatments on soil fertility and plant photosynthetic performanceseedling growth.The results showed that all three treatments improved soil fertility and photosynthetic parameters of seedlings compared to with the control(gar-den soil only).Among them,the treatment with branch crushing,composting and then returning to the field was the most effective,which significantly increased the content of alkaline nitrogen,avail-able phosphorus,available potassium,and organic matter contents of the substrate soil,the activi-ties of soil urease,sucrase,and β-glucosidase,as well as the net photosynthetic rate,stomatal conductance,and transpiration rate of the seedling leaves of seedlings.
万方数据
维普
