Cultivation techniques of Rich Tree
The rich tree is a potted plant with high demand, and its economic value is relatively high, and there are many people who cultivate it, so what is the cultivation technique of the rich tree? How should the rich tree carry out pest control?
I. cultivation techniques of rich trees
The main results are as follows: 1. Choose the sandy loam with fertile and good drainage, and the nursery should be in the position of leeward and sunny.
Generally, the nursery bed is made into a border surface with a width of 1 meter and a length of 10 meters, which is suitable for the north-south direction. Before planting, the border surface should be turned deeply, the topsoil is removed, and the lower layer is covered with a layer of 3 cm thick gravel. The upper layer is covered with 10 to 15 cm thick fresh river sand and slag mixed at 2:1 matrix sand.
2. Rich trees need sufficient light during the growing period, generally without shade in spring and winter, and shade in summer and autumn when the light intensity is strong.
Rich trees belong to Chinese and Japanese plants, generally 75% shading is appropriate after sprouting, and generally use 1 layer of 50% shading net.
3. If the temperature and humidity in the shed are kept at 25-38 ℃ and 50%, 75% respectively, the rich tree will grow better.
In hot summer and dry autumn, the ground should be often sprayed with water at noon to humidify and cool down.
4. Fertilize properly according to the growth of the rich tree, and pay attention to ventilation.
After sprouting in the pot, the three-element liquid fertilizer was sprayed once a week, for example, the compound fertilizer with nitrogen, ∶, phosphorus, ∶ and potassium was 20 ∶ 20 ∶ 20, and organic fertilizer or phosphorus and potassium fertilizer could be applied to the soil once a month. It is forbidden to apply nitrogen fertilizer in the growing season.
II. Prevention and control of diseases and insect pests of rich trees
1. Insect pests: insect pests include shell insects, whitefly and leaf roller. The control method is to spray with 1000 times of imidophos EC.
2, disease: common leaf spot disease harm, the control method is to use 50% carbendazim 1000 times liquid spray control.
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