In early spring tea gardens, budding fertilizer should be applied
In the early spring, germinating fertilizer should be applied. During the application period, the early stage of overwintering bud scales is the most appropriate; after the spring tea is over, the second and third trimmings should be performed separately. Fertilizers are applied during the growing period of the tea tree grounds, collectively referred to as tea garden topdressing. The function of topdressing in tea gardens is to continuously supplement the needs of nutrients during the growth and development of tea plants, so as to further promote new growth and achieve sustained high yields. It usually takes 3 to 4 times a year. The place where the temperature is high, the rain is abundant, and the tea tree grows longer can be applied for the fourth time.
The fertilization of tea leaf surface is not affected by factors such as soil erosion, leaching and biological fixation, and the fertilizer is economically utilized, and the absorption is quick and the effect is good. At the same time can also be combined with pest control, artificial irrigation and other measures. Outside the root dressing should consider the application of trace elements, spray concentration should be appropriate. The general concentration is 1%~2% of ammonium sulfate, 0.5%~1% of urea, 1%~2% of superphosphate, 0.5%~1% of potassium sulfate, 50ppm of zinc sulfate, 0.01% of manganese sulfate; When the best spraying effect, each 50 ~ 100 kg per mu of fertilizer. When spraying, the front and back sides of the blade should be sprayed at the same time. In particular, attention should be paid to the spraying on the back side. Generally, the backside absorption capacity is more than 5 times higher than the positive side.
The fertilizer applied after the stoppage of growth of the tea tree on the ground is called tea garden basal fertilizer every year. The tea garden basal fertilizer mainly ensures the nutrient required for the root activity of the tea tree after entering winter, and at the same time provides nutrients for the spring tea of ​​the following year. Usually in September-November combined with deep plowing, famous tea production park should be properly applied early. Base fertilizer usage: The annual average of the young tea plantations is 750 kilograms of organic fertilizer per mu, and the conditional units must increase 50 to 100 kilograms of cake fertilizer, 25 kilograms of superphosphate and 15 kilograms of potassium sulfate. The tea plantation is put into operation. Each year, the average application rate is 1500-2500 kg of organic fertilizer, or 100-150 kg of cake fertilizer, 25-50 kg of superphosphate and 15-25 kg of potassium sulfate. Basal fertilizer should be deepened. Mature tea gardens usually have fertilization ditch in the vertical downward position of the tea groves. They can also be used to divide the ditch. Every year, the position is changed, and the ditch depth is 20 to 30 cm. The young tea gardens are treated by the seedlings and fertilization points. The distance from the root neck: 1 to 2 years old tea trees are 5 to 10 centimeters, and 3 to 4 years old tea trees are 10 to 15 centimeters long. Depth 15 to 25 cm.
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