It is distributed in the southwest to the western part of Sichuan Province, Yunnan, Guizhou and other provinces, and to the northwest to Shaanxi and southern Gansu. It is suitable for cypress cultivation from February to March every year, and the survival rate of transplanting is also higher. The planting depth should be that the soil surface of the original seedling rhizome is equal to the current planting ground. After planting, water immediately, every 15 days or so.
First, cypress generally has few diseases, but once the disease occurs, it needs to be prevented and treated as soon as possible.
1. Disease
Cypress pear rust, cypress apple rust and cypress heather rust, these are overwintering hosts, winter should pay attention to prevention and killing, try to clean the branches and leaves in winter, so as not to overwinter insect eggs. Cypresses are planted on the outside of the building to make the area also enjoy the scenery during the cold winter months.
2. Prevention
Spraying 1% equal Bordeaux liquid, or 80% 100 times the liquid of su402, in May can play a role in the control of pests and diseases. After entering the winter, it is necessary to carry out reasonable thinning between forests, remove harmful trees in time, ensure the density of the entire stand structure, and strengthen the ventilation and light transmission between forests.
3. Afforestation
In the process of forest cultivation and management, do a good job in cleaning up dead branches, pay attention to cleaning up the dead branches and leaves on the canopy of Qilian cypress, collect and then bring them out of the forest for centralized treatment.
4. Potted plants
Cypress pot cultivation needs to turn its pot every 3 to 4 years, the pot is carried out in the rainy season, when turning the pot, it is appropriate to remove part of the old roots, replace half of the soil, and add a little fertile and loose sandy culture soil.
Second, the maintenance temperature of cypress saplings can not exceed 30 degrees in summer, and the northern region can take cold and warm measures in winter planting, and the resistance of newly transplanted seedlings is not strong, and it needs to be well maintained.
1. Watering skills
Cypress is shade tolerant, likes cool and warm climate, it can withstand drought, in late spring to early autumn when the plant grows vigorously, need to topdress 2-3 times, usually watering is not too diligent, summer can be appropriate amount of watering.
2. Fertilization skills
The cypress pile scene cannot apply too much fertilizer, and a little thinner fertilizer can be applied from March to May every year. Thin fertilizer should be applied 2 to 3 times a year from March to May, and 1 to 2 times a thin fertilizer should be applied in autumn, and the combination of watering and fertilization is more conducive to fertilizer absorption.
3. Trim attention
The cypress selects the first main branch, prunes the excess branches, and removes individual branches and any dead branches that grow in the wrong direction. Winter pruning is carried out in the winter of each year, pruning diseased branches and dense branches, and after years of cultivation, the first form can be seen.
Third, the precautions for the cultivation of cypress
1. Planting depth
Cypress is more shade-tolerant, prefers cool and warm climate, transplantation is carried out in the autumn and early spring with soil, the soil ball should be appropriately large when excavating, and the planting depth is flat with the transplanted tree soil ball and the transplanted ground.
2. Build support
In the early spring from March to April, the climate will gradually heat up, and the saplings will be watered reasonably, and if they are dry, they will not be watered. After the soil is poured through the water, the force capacity is greatly weakened, and the pole needs to be fixed in time.
3. Cold protection and freeze protection
The newly transplanted saplings have low cold resistance, and the method of wrapping the trunk with grass rope is adopted to prevent frost and cold and protect the branches from frost damage. In winter, pay attention to leaving last year's autumn shoots, and cut off some diseased branches, bad branches or overly dense branches to avoid affecting overwintering.
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