Li Gang, Liu Jingjing, Tian Yu, Chen Han, Ren Haiying
Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
Plants (Basel). 2022 Dec 6;11(23):3394. doi: 10.3390/plants11233394.
The rampant bayberry decline disease has been regarded as related to soil with the long-term plantation bayberry. These parameters, hydrogen, aluminum, other alkali cations, and plant-related nutrients, were measured from the soil around diseased tree roots 10, 20, and 30 years old. The pH significantly declined in topsoil with increasing tree age and rose with increasing depth of the soil layer with an age of 10, 20, and 30 years. The concentration of exchangeable aluminum has risen significantly with the increase of the tree ages in the top soil layer and also in 0 to 40 cm soils layer with ten-year-old trees. In the top soil layer with a depth of 0 to 10 cm, the cation concentrations of Ca, Mg, and K has fallen significantly with the increase of tree ages. A higher concentration of exchangeable aluminum was observed in the soil with trees more seriously affected by the disease and was accompanied with lower concentrations of Ca, Mg, and K. The correlation analysis showed that the soil pH is significantly positively related to the concentration of exchangeable Ca, total nitrogen, and total phosphorus and negatively to exchangeable aluminum. These findings provided a new insight to mitigate the disease by regulating the soil parameters.
杨梅衰退病的猖獗被认为与长期种植杨梅的土壤有关。对树龄为10年、20年和30年的病树根际土壤中的氢离子、铝离子、其他碱金属阳离子以及与植物相关的养分等参数进行了测定。随着树龄增加，表层土壤pH值显著下降，而在树龄为10年、20年和30年的土壤中，pH值随土层深度增加而升高。表层土壤以及树龄为10年的树木0至40厘米土层中，交换性铝浓度随树龄增加而显著上升。在0至10厘米深度的表层土壤中，钙、镁、钾阳离子浓度随树龄增加而显著下降。在受病害影响更严重的树木的土壤中，观察到更高的交换性铝浓度，同时伴随着更低的钙、镁、钾浓度。相关性分析表明，土壤pH值与交换性钙浓度、总氮和总磷显著正相关，与交换性铝显著负相关。这些发现为通过调节土壤参数减轻病害提供了新的见解。
