Measures to be taken after tea trees are harmed by freezing
1. All the shoots and shoots on the surface of the crown that have been scorched by freezing should be cut off, and the specific depth of pruning should be determined according to the degree of freezing.
2. The suitable pruning time is from February 15 to March 5, that is, the period from Rain Water to sting.
3. Topdressing in time: cutting off the shoots damaged by freezing will consume a lot of nutrients in the tea plant, and timely topdressing can promote the rapid recovery of tea tree growth. Generally, conventional tea gardens can choose to apply 20: 30 kg urea per mu in sunny days. For example, organic tea gardens can spray mineral foliar fertilizer and organic foliar fertilizer twice 10-20 days before spring tea mining.
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Management of tea tree crown
1. Tea pruning is an important measure in crown management. Pruning includes stereotyped pruning in infancy, light and deep pruning in adult tea gardens, re-pruning and table cutting in aging tea gardens. The main results are as follows: (1) stereotyped pruning of young tea trees: 3 or 4 times of stereotyped pruning in young tea trees can inhibit the apical dominance of the trunk of young tea trees, promote the germination of axillary buds, increase the number of backbone branches, and quickly form a robust picking surface with a certain height. The first stereotyped pruning of ① was carried out after the cuttings were transplanted. When the transplanted seedlings are as high as 25cm
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Technical measures for Prevention of Heat damage in Tea trees
The heat damage of tea tree refers to the meteorological disaster which results in the reduction of tea production, the hindrance of tea tree growth or the death of tea plant under the condition of long-term high temperature and dry climate. Tea is native to the subtropics and belongs to perennial evergreen plants. It has the habit of being warm, humid, shady and afraid of drought. When the persistent high temperature and excessive drought, the red sun is hot, the rainfall is less, and the air relative humidity is less than 50%, the transpiration of the leaves is enhanced, and the water absorbed by the roots can not make up for the consumption of the aboveground part, thus withering and falling leaves of the tea tree, and even death. To prevent the heat damage of tea trees, except to choose heat-resistant tea trees.
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