Evergreen fruit tree is a kind of fruit tree with long leaves and does not fall off in winter. There is no obvious dormancy period and it grows all the year round. Like warmth, not tolerant of low temperature, mainly distributed in the south of the Yangtze River. Can be divided into woody evergreen fruit trees (such as citrus, loquat, longan, litchi and so on. ) and perennial herb evergreen fruit trees (such as bananas, pineapples, strawberries, etc. ).
Maintenance measures
1. Increase the application of organic fertilizers, especially phosphorus and potassium fertilizers.
From the young age of fruit trees, it is necessary to strengthen the rational application of organic fertilizer, especially phosphorus and potassium fertilizer, rather than partial application of nitrogen fertilizer, to promote the growth and enrichment of branches at all levels and improve the ability to resist snow damage.
2. Do a good job of plastic trimming
First, we should do a good job in shaping fruit trees from small to large, and cultivate trees with stable structure. In production, we must always pay attention to the balanced distribution of main branches and open crowns, and take measures such as bracing, pulling and hanging to keep the branch angle of main branches at 40 ~ 45 and improve the load capacity of branches. Second, before it snows, thin the dense branches to reduce the snow in the canopy.
The method is: sparse the dense branches in the middle and upper part of the crown, open the skylight and retract the transverse branches of the crown appropriately, so that it is not easy to get snow on the crown when it snows in winter, thus reducing snow damage. This work is mostly carried out in late autumn and early winter, which affects the healing of shears and saws and is not conducive to wintering.
3. Protect branches from damage
Branch pests and diseases such as Cerambycidae, Cerambycidae, etc. It is very harmful to branches, so we should pay attention to timely prevention and control. Use a ladder when pruning and harvesting, and don't climb trees to avoid stepping on branches. Don't touch branches when digging, ditching and fertilizing. Before the fruit trees bear too much fruit or the heavy snow comes, the branches can be protected by supporting and hanging branches.