Growth characteristics and planting and cultivation management methods of Photinia chinensis

Second, pay attention to the adaptation of soil and water and fertilizer conditions. Although the growth of red leaf heather is not strict with the soil selection, the soil of the planting site is required to be loose, ventilated, and have certain fertility. The organic matter content in the soil is required to reach about 2%. According to the experimental observation, the brightness and retention time of leaf color of Photinia rubra planted in alkaline soil with good water and fertilizer conditions in alluvial plain are not as high and long as those grown in slightly acidic red loam soil or loam soil. When planted in the area with high groundwater level in the lake area, the dead seedlings will appear to a certain extent in the area with low temperature and ice weather in winter, indicating that their waterlogging resistance is poor. Therefore, the growth of red leaf heather requires soil moisture content of about 20%-35%. Insufficient soil moisture supply will inhibit growth activities, make leaves age faster, no new leaves grow out, red leaf period will be shorter. In the soil hardening zone planting red leaf heather, need loose soil, timely supplement fertilizer, to ensure timely shoot, poor growth after pruning appropriate fertilizer is conducive to shoot growth, but not excessive. Try to avoid planting in the soil that is often trampled or the tuyere of buildings, not only the growth is affected, but also the redness of the leaves is far less than that of red leaf heather growing in slightly acidic red soil.

Third, reasonable pruning should be carried out in due course. Proper pruning can improve ventilation and light transmission between leaves. Improve the ornamental property of red leaf heather. Generally in early spring, early summer, early autumn before germination or late growth of new shoots, according to planting conditions and the growth of seedlings themselves. Pruning too late is bad for the growth of red leaf heather in the lower stage; pruning too early will prune the good landscape. In order to promote the branching of Photinia rubrifolia, the methods of topping, cutting short, heavy and short cutting can be used to prune the model. In principle, pruning is to remove weak and keep strong, moderate appropriate treatment, to maintain the beauty of the tree. Generally cut the mouth in the node 0.5 cm or so, avoid leaving piles; shoot too fast should be many times to pick the core, in order to promote branching, to prevent disconnection and tree thin high. Note that in the summer high temperature season, it is not suitable to use short or heavy short shear, otherwise it is difficult to restore plant growth and affect landscape effect.