Cultivated wogan should have good plant shape and complete root system, especially without the pathogen of citrus Huanglongbing, canker and decline disease. Ziyang Orange, Lime Orange and Red Orange should be used as rootstocks on dry sloping land or alkaline soil, and Fructus Aurantii Macrophyllae should be used as rootstocks in paddy field (with Fructus Aurantii and Fructus Aurantii as rootstocks, Mu Yi appears yellow symptoms due to lack of elements).

Second, garden soil cultivation

Choose loose, fertile, well-drained, leeward or paddy fields to build gardens. If the slope is small, the whole garden will be deeply ploughed and ploughed with a high-power tractor and a single plow. When the soil moisture is not high, plow the land in the direction of contour line or vertical road. A plow can plow 60 ~ 70cm at a time, and then rake it once or twice until it is flat. Then according to the drainage situation of sloping land, flat land or paddy field, the drainage ditch is excavated with a hook machine. You can also hook the whole park to a depth of more than 60 cm with a large hook machine, and then rake it flat. Or dig a planting pit with a length and width of 1 m and a depth of 0.6 m, put in 50 kg of organic manure and calcium superphosphate 1 kg to mix with the soil, and then return to the pit, and the soil will be higher than the ground.

Third, the planting techniques of Vogan

1. Planting density: Vogan planting spacing is 2 ~ 3m, row spacing is 3 ~ 4m, and 56 ~ 1 10 plants are planted per mu, which can be selected according to planting preference and management level.

2. Planting time: The planting time of Wogan is from February to early May in South China, with rainy days when the temperature rises, or from September to 165438+ 10. Container seedlings can be planted all year round.

3. Planting method: The naked root seedlings of Wogan can be soaked in 0. 1% potassium permanganate solution for about 2 minutes, taken out and dried for about 3 minutes, and then washed with clean water once, which can kill the germs on the plant surface. Then, the roots of Vogan seedlings are soaked in sterilization, insecticide, nutrient solution and other solutions for about 8 hours, and then the seedlings can be taken out, and the yellow mud beaten with this solution is stuck and planted.

Fourthly, young tree management in Vogan.

1, fertilizer and water management: Wogan is extremely strong, and it needs big water and big fertilizer. Install a drip irrigation device integrating water and fertilizer as far as possible, mainly including fertilizer dissolving tank, water tank, filter, water pump, main water pipe, branch pipe, switch, drip irrigation belt and emitter. Young trees aim at rapid cultivation of crown, and apply it frequently and thinly, and the ratio of nitrogen, phosphorus and potassium is reasonable. Only once a year, the organic fertilizer is used as the base fertilizer, and each plant is about 15kg, and the compound fertilizer is about 2 kg.

2. Plastic trimming: Vogan has a strong shooting ability. Under the condition of good water and fertilizer conditions in Nanning, Guangxi, young trees can sprout new buds 6-7 times a year. If not controlled, they are often overgrown with short and weak branches. After the seedlings are planted, the height of the main stem is about 20 ~ 30 cm, and then pruning is carried out according to the guiding ideology of "one fork and three branches", that is, about three branches with uniform thickness are left on each branch, and the redundant branches are erased. Too long branches are cut short when they are mature, and the length of each branch is kept 20 ~ 25 cm. This method has a clear guiding ideology for plastic surgery, simple operation, and can make the whole tree reasonable and the branches thicker.

Verb (abbreviation of verb) management of Vogan tree

1, fertilizer and water management: It can be summarized as three sentences: "Nitrogen application in spring, potassium application in summer, compound application in autumn, drenching bran water in expansion period, and re-application after harvest to promote recovery". Each plant is applied with 50 kilograms of fermented organic fertilizer every year, together with peanut bran and calcium superphosphate. In September-June, water and fertilizer irrigation should be strengthened, and in June, 65438+February, the application should be diligent and thin.

2, plastic pruning: can be summarized as four sentences "leave spring shoots, cut summer shoots, put autumn shoots uniformly, and strictly control winter shoots". That is, when the spring shoots are 5 cm long, each branch should leave 2-3 strong shoots in different directions. The principle of keeping buds is sparse, short, long, weak and strong. Keep 6-7 leaves for the shoots that grow too vigorously, and cut all the shoots in summer. From the first ten days of August to the first ten days of September, autumn shoots should be uniformly placed and scattered buds should be erased. If the tree is weak, a small number of late autumn branches can be left, and the rest and winter branches can be completely smoothed. Winter pruning is based on the principles of ventilation, light transmission, reasonable branch distribution and compact crown. Cut off the branches of pests and diseases, burn them centrally, and clean up the garden at the same time

3. Flower and fruit management: Wogan has more flowers, high fruit setting rate and less fruit dropping in the later stage, which is easy to cause insufficient nutrition supply, poor growth and development of flowers and fruits, small fruits, rough skins and poor quality, and also easy to cause fruit bearing in different years. Therefore, we should pay attention to fruit thinning in the new year, which can be divided into two times, and then fruit thinning after physiological fruit drop, and there will be about 300 fruits left in the second time. Calculated by 3 1 kg, 40-50 kg is needed for each fruit tree in 3-4 years. Pay attention to spraying foliar fertilizers such as potassium dihydrogen phosphate in small years to protect flowers and fruits. Only in this way can we have a bumper harvest every year.

4. Timely harvesting: Wogan can be harvested in early June at 5438+ 10, with a high maturity around mid-February, which can mainly supply two important festivals: Spring Festival and Lantern Festival. It should be harvested before early March, not too late, so as not to affect the next season's flowering. The clean Vogan can be stored for more than 1 month at room temperature, and the unclean peel surface is vulnerable to Penicillium and Penicillium. The main processes of commercial treatment of Wogan include harvesting, treatment, cleaning, bactericide treatment, waxing, grading, labeling and packaging. Bactericide treatment can be 2000 mg/kg, 2000 times of 45% propafenone, etc.