FAQ】 How to fertilize tea plantations? What are the methods and precautions for fertilizing tea gardens?
[Expert answers] Fertilizer application in tea gardens should be combined with the fertilizer characteristics of tea trees, and a variety of fertilizers should be applied in a timely and appropriate manner to achieve the promotion of tea tree growth, high quality and high yield of tea, and the restoration and improvement of soil fertility. Combine.
In principle, the application period of basal fertilizer is to stop the growth of the above-ground part of the tea tree, which should be carried out sooner rather than later. Generally, the tea areas in the middle and lower reaches of the Yangtze River should be applied in the middle of October, and the tea areas in the south can be postponed appropriately.
The amount of basal fertilizer application depends on the age of the tree and the productivity of the tea garden. Generally, 250-300 kg of biological organic fertilizer is applied to tea garden acres.
The base and method of fertilizer application in tea garden are determined according to the tree age:
1-2 years old tea trees are opened at a distance of 10-15 cm from the root neck, about 15 cm wide and 15-20 cm deep.
Tea plants of 3-4 years old are applied with bio-organic fertilizer at a depth of 20-25 cm at a depth of 35-40 cm from the root neck; adult tea gardens are ditched along the vertical vertical position of the crown and the depth is 20-30 cm;
If the tea plantation has been closed, a ditch shall be opened between the two rows of tea trees. If it is ditched alternately, the fertilization position shall be changed every year. The sloping field or narrow cascade tea garden shall be replaced. Orientation to reduce fertilizer loss.
Tea garden topdressing should be applied in batches according to different periods:
The first fertilization was applied before the spring tea, when the spring shoots were in the scales and the fish leaves were first displayed, and it was best to finish the tea in the middle and lower reaches of the Yangtze River in early March.
The second fertilizer application is performed after the spring tea is over or when the growth of the spring shoots has basically stopped, and it is generally applied before the end of May.
The third time was after the summer tea was picked or when the growth of summer shoots stopped basically.
For tea gardens with high temperature or high yield, a fourth or more top dressing is required, and the top dressing time should be determined according to the actual situation. 100 kg of bio-organic fertilizer was used for topdressing of tea gardens per acre. Young tea gardens were ditched 10 cm away from the outer edge of the tree canopy. Adult tea gardens were ditched vertically along the canopy.
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