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Litchi fruit tree winter shoot control method
In winter, the management of lychee trees should pay attention to controlling the winter shoots, which is an important measure to promote the high yield and stable production of litchi in the following year. The winter tip of the litchi fruit tree is controlled by the following methods: First, the young shoots of the old mature lychee trees in the early winter shoots will be taken out in late October. The method is: spraying 0.2% urea and 3% potassium dihydrogen phosphate to spray the leaves, spraying once every 7 to 8 days, and spraying 3 to 4 times. If it is drought, it should be filled with water to speed up the green shoots. Second, deep boring and digging ring ditch control of winter shoots 11 to the middle of the 12th, in the canopy near the drip line, deep plowing 20 to 30 cm or outside the canopy outside the excavation of the ring groove 30 to 50 cm, which can cut the horizontal lateral root. However, it should be noted that for a vigorously growing result tree, a part of the lateral roots can be broken, and those old trees should not be cut off and excessively damaged. Third, the use of drug control tips in the winter shoots should not be used to control the tip, can be manually picked tip or other methods. When the winter shoots are as long as 4 to 5 centimeters, the use of 700 ppm ethephon has a good effect. However, the weak tree should be slightly reduced the concentration of pesticides to reduce the harm.