Tea tree spraying fertilizer technology for drought resistance and disaster reduction

First, the type of fertilizer

1, urea: urea a quick-acting nitrogen fertilizer, nitrogen content of more than 45%, is the common fertilizer fertilization.

2. Potassium dihydrogen phosphate: Potassium dihydrogen phosphate is a kind of quick-acting phosphorus and potassium compound fertilizer, containing 51.7% of phosphorus pentoxide and 34.6% of potassium oxide. It is easily absorbed and utilized by plants.

In the production of tea, urea and potassium dihydrogen phosphate are suitable for foliar spraying. Fertilizers are applied directly to tea plants to increase the deficiency of nitrogen, phosphorus and potassium nutrients under drought conditions, enhance photosynthesis, and increase the resistance of tea plants to high temperatures. ability. Promote the synthesis and accumulation of sugar, improve the quality of tea, and achieve the purpose of production and quality assurance.

Second, spray method

1, spraying time: tea leaf fertilization should be at a certain suitable temperature, only have obvious results, generally in the morning and evening and cloudy spraying, the effect is good; sunny should be selected before 10 o'clock in the morning, 4 o'clock in the afternoon After spraying, cloudy days can be sprayed all day.

2, spraying concentration: tea leaf surface fertilizer concentration is generally 0.3% -0.5% urea plus 0.2-0.4% potassium diazoxide mixed application, avoid high concentrations, otherwise it will cause the leaves coke, curl or even fall off, increase drought.

3, spraying method: tea leaf surface fertilization from the back of the spray spray to facilitate the tea tree absorption; on the tea garden during mining, pay attention to only spray into the leaves, do not spray on fresh leaves to be picked.

4. Picking interval: After spraying foliar fertilizer, usually picking after 5-7 days, in order to facilitate the development of fertilizer efficiency, improve the quality of tea.

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