How to reasonably prevent drought and flood in tea garden? Can damaged tea trees continue to produce tea?

Tea trees mainly grow in subtropical areas with high temperature and rainy weather. The average temperature of their growth is about 15 to 25 degrees, and the requirement for precipitation is 1000 to 2000mm, but the requirement for land quality is acidic soil layer, and the natural environment in mountainous areas is the most suitable for planting. Secondly, we also need to master the types of tea. After all, the types of tea have a great relationship with the future output and quality of tea. At present, the main tea varieties in China are Fuyun 6 and fuding city Daliang. Environmental protection should be paid attention to in tea tree reclamation, and appropriate stages, methods and construction techniques should be selected according to different tendencies and topography. Land reclamation of flat land and gentle slope land with slope below 15 degree; In hilly and mountainous areas with a slope greater than 1.5 ~ 25 degrees, it is necessary to build a high-quality ladder learning park with low inside and strong outside, and build a protective barrier.

Generally, the planting ditch is 50~60cm deep and 70~80cm wide. In order to facilitate the operation, we can pump and build ridges from the foot of the mountain in turn, and turn the subsoil in the upper-level field ladder over to the subsoil of the lower-level field ladder, so that the subsoil can be paved as well as possible and returned to the drainage ditch. Whether Camellia oleifera can quickly grow into a garden and continuously increase its yield after growing depends on deep ploughing and base fertilizer before planting. Deep tillage before planting not only deepened the soil layer, but also created a good standard for the expansion of Camellia oleifera root system, promoted a series of physical and chemical changes in the soil layer, improved the level of water storage and soil consolidation, and brought good water, fertilizer, gas and heat standards for the growth and development of Camellia oleifera. Applying a certain amount of organic fertilizer as base fertilizer can give play to the effect of deep ploughing.

When planting, the large and small seedlings are planted separately, the large seedlings are planted in the weak living environment, and the small seedlings are planted in the land with rich soil layer and good living environment. When transplanting, dig a hole slightly larger than the rhizome in the planting ditch, fill it with soil and tamp it. Remember not to damage the roots and underground stems, but to water them. After transplanting, green straw such as wheat straw or agricultural plastic film should be laid to facilitate moisture retention, water replenishment, heat preservation and control the growth and development of weeds. Spray a new layer of high-fat film in time after planting, keep warm, moisturize and replenish water, and improve the survival rate of seedlings. In terms of transplanting specifications and modes, reasonable close planting should be adopted, and the level of sparse planting should be sensitive to different types, different types of soil layers, different types of management capabilities, different types of natural conditions and different types of topography, and planting density, plant spacing and arrangement should be considered.

On the one hand, too intensive planting consumes tea seedlings and expands the planting labor force, thus increasing infrastructure; On the other hand, poor permeability can easily lead to diseases and insect pests after gardening. Too little planting is not conducive to the garden, delaying production time and affecting production increase. Generally, in tea fields with step width less than 1.5m, one-way strip planting is implemented, with spacing of 33cm, two trees per hole, and 3,000 tea seedlings are planted at 1 mu; In the tea field with step width of 1.5m-2.0m, multi-row strip planting should be carried out, and the spacing between plants should be 33cm up and down, and the spacing between rows should be 45cm up and down. It is most suitable to plant 3,000 tea seedlings per hole 1 mu. According to the biological characteristics of Camellia oleifera, that is, the growth characteristics of fertilizer, the performance of soil texture and the probability of stem falling from the heart soil, the Camellia oleifera should be slightly tilted inward to make it in the middle of the terrace during the tea tree mining period.