How to plant Platycladus orientalis seeds
This article provides a comprehensive explanation of how to plant Platycladus orientalis seeds and the cultivation and maintenance methods for Platycladus orientalis, following which our station editor will introduce the content.
With the continuous expansion of the planting area of Platycladus orientalis in Qianshan, Anhui Province, researchers have also developed new techniques in the planting of Platycladus orientalis. However, it is necessary to fully grasp the living characteristics of Platycladus orientalis in combination with the actual conditions of Qianshan, Anhui Province, and complete the planting work in suitable seasons to fully utilize the advantages of seedling raising, afforestation, and planting techniques, and apply appropriate methods to improve the quality and efficiency of Platycladus orientalis planting, thereby further improving the cultivation and management level of Platycladus orientalis.
1 Characteristics of Platycladus orientalis
1.1 Botanical characteristics
Platycladus orientalis is a type of tree that can grow to a height of about 20 meters, with the main trunk's chest height about 1 meter from the ground. The tree crown of young trees is pyramid-shaped, while that of mature trees is round. The bark is light gray with longitudinal cracks. The leaves are erect or oblique, forming a flat surface. Platycladus orientalis is a monoecious plant, with female flowers spherical in shape, about 2 mm in diameter, and male flowers yellow and round, about 2 mm in length. The fruit of Platycladus orientalis is 1.5-2.5 cm long, the seeds can be about 7 mm long, the flowering period can last about 4 months, and the fruit matures from October to November each year.
1.2 Ecological characteristics
Platycladus orientalis has strong resistance to drought and high temperatures, prefers sunlight, and does not have high soil quality requirements. It is suitable for growth in acidic or slightly saline-alkaline soil types. Annual precipitation of 300-1600 mm and temperatures between 6-18℃ are suitable for the growth of Platycladus orientalis. Slightly acidic or alkaline soil is more suitable for young trees, which have a certain cold resistance but cannot withstand excessive flooding. Therefore, during the growth of young Platycladus orientalis trees, it is necessary to improve lighting conditions to ensure that the trees receive ample sunlight for healthy growth.
2 Cultivation techniques of Platycladus orientalis
2.1 Seedling raising techniques for Platycladus orientalis
2.1.1 Selection of land, land preparation, and fertilization Preferably select flat land with good drainage and fertility conditions for planting seedlings, while ensuring good irrigation conditions. Do not choose low-lying or highly clayey soil types, nor should you choose locations exposed to wind for planting Platycladus orientalis.
It is necessary to deeply plow and fertilize the soil in the seedling raising area to ensure that the soil fertility meets the requirements. Typically, the land can be plowed to a depth of about 25 cm in autumn; the soil is shallowly plowed by about 15 cm in spring. During the autumn plowing, it is also necessary to apply 2500-5000 kg/667 m² of human manure, after which the soil is restored to a flat state.
2.1.2 Seed priming treatment before sowing To increase the germination speed of seeds, appropriate technical means can be used for priming treatment. There are many empty seeds in Platycladus orientalis seeds, so water washing can be performed first to remove the empty seeds floating on the water surface. Then, immerse the seeds in a 0.3%-0.5% copper sulfate solution for 2 hours to completely eliminate diseases in the seeds, followed by seed priming treatment.
2.1.3 Sowing of Platycladus orientalis seeds Sowing can usually be completed in spring. However, due to climate differences in different regions, the sowing time may vary. Since the growth cycle of Platycladus orientalis is long, early sowing can be carried out based on the climate conditions of the planting area to extend the growth period of seedlings.
2.1.4 Management of seedlings during the seedling stage After priming, seeds usually germinate about 10 days after sowing and enter the seedling stage in about 20 days, at which time irrigation can be carried out.
2.1.5 Transplanting of seedlings Platycladus orientalis is generally harvested after 2 years, with transplanting taking place in the following spring. To cultivate large绿化 seedlings, it is necessary to undergo about 3 transplanting treatments, which can cultivate seedlings with ideal growth conditions and complete the out-plot planting.
2.2 Planting techniques for Platycladus orientalis
2.2.1 Digging holes The depth and size of the holes need to be determined according to the specifications of the soil ball, with the hole diameter needing to be 40-100 cm larger than the soil ball diameter. If the height of the soil ball is 40 cm, the depth of the hole should be 80 cm.
2.2.2 Placing stones Place stones in the hole, which can filter water and provide high-quality water sources for the plants. A stone thickness of 10-15 cm is ideal.
2.2.3 Backfilling soil Choose a soil type with high fertility and suitable pH for planting Platycladus orientalis, and do not use concrete or other soil types for planting, which can create a good soil environment for the plants. In Qianshan, Anhui Province, it is more suitable to plant Platycladus orientalis when the temperature reaches 10-17℃, usually from March to April each year. A horizontal trench method can be used to complete the planting work, digging an area of 50 cm long, 40 cm wide, and 30 cm high to intercept and store water in the soil. Then, place about 20 seeds in each hole and cover them with about 3 cm of soil, providing good growth conditions for the seedlings. During the planting of Platycladus orientalis, it is necessary to choose suitable planting methods according to the climatic characteristics of different regions to ensure that Platycladus orientalis can grow smoothly in Qianshan and achieve ideal planting results.
2.2.4 Points for attention during planting
2.2.4.1 Treatment of seedlings A thorough inspection of the seedlings on-site is required for any signs of injury. If there are wounds on the seedlings, it is necessary to first check whether there is dirt around the wounds. If there is, it should be cleaned. Then, use tools such as knives to smooth the wounds and apply medicine to the wound areas. The same method should be used for the treatment of the root wounds of the seedlings. Rooting powder can be scattered on the soil ball during the treatment of the root system. The amount of rooting powder can be determined based on the size of the tree and survival rate, usually about 2 packs for trees with a diameter of about 10 cm and about 4 packs for trees with a diameter of 20 cm or more.
2.2.4.2 Soil disinfection It is necessary to sprinkle disinfectant evenly in the hole. The medicine can eliminate pathogens in the soil, preventing the roots of the plants from being infected by pathogens in the soil and affecting the overall growth quality of the plant.
2.2.4.3 Scientific backfilling Place the prepared seedlings in the hole, ensuring that they are upright, and cover the soil evenly. During the backfilling process, use a stick to compact the soil around the soil ball to increase the tightness of the soil and soil ball contact, then implement backfilling. The thickness of the backfilled soil should be about 5 cm; if the soil is too thin, the roots of the plant will be exposed to the air; if the thickness is too great, it will reduce the soil's breathability, and the plant is more likely to be negatively affected by waterlogging.
2.2.4.4 Ample watering Watering is required during the planting process to supplement water for the roots. A steel pipe about 1 meter long can be tied to the pipe head to ensure that the water for setting the roots can be directly delivered to the roots, fully soaking them. After the watering process, the looseness of the soil will also increase, at which time it is necessary to straighten the seedlings to avoid damage.
2.2.4.5 Binding support poles After ample watering, the soil's bearing capacity will significantly decrease, at which time it is necessary to use support poles to stabilize the seedlings and prevent the roots from being damaged by other causes. The binding must be firm to achieve the expected fixing effect. To prevent frost damage to the seedlings, grass ropes can be wrapped around the seedlings to strengthen frost damage prevention.
3 Management of Platycladus orientalis
Usually, manual methods can be used to complete the nurturing and management of Platycladus orientalis, scientifically managing the process of young forest growth to mature forest, which can significantly improve the growth quality and ability of the trees. Against the background of the development of forest farms, actively optimizing the surrounding environment of the plant planting area can achieve ecological balance.
3.1 Water and fertilizer management
During the nurturing period, it is necessary to fully understand and analyze the specific growth conditions of the young forest, ensuring that loosening the soil and weeding are completed at the beginning of planting, as well as irrigation and other tasks, which need to be continued for about 3 years. During the specific operation, high-nitrogen fertilizer should be selected as the fertilizer to effectively improve the chlorophyll of the seedlings and achieve regulatory effects, overall improving the absorption effect of Platycladus orientalis on water.
3.2 Thinning between nurseries
In forest farms, thinning between nurseries can fully promote the smooth implementation of afforestation work. Artificial Platycladus orientalis forest areas can implement thinning every 2 years, which can significantly increase the biodiversity in the forest area. Through practice, thinning with higher than moderate intensity is more suitable for increasing the diversity of plants such as Platycladus orientalis, and appropriate thinning can also optimize the lighting conditions in the forest. This can significantly improve the quality of artificial afforestation and maintain the diversity of the forest area. If it is found that the plants in the forest area are degenerating and pose a threat to the entire ecosystem, it is necessary to reconstruct Platycladus orientalis. After 2 years of thinning Platycladus orientalis, a significant increase in the number and quality of plants can be seen. Based on the experience of afforestation work in recent years, efficient thinning can improve the diversity level of Platycladus orientalis and also create more ideal lighting conditions during thinning, increasing the temperature in the forest area and reducing the probability of diseases and pests.
4 Control of diseases and pests of Platycladus orientalis
4.1 Platycladus orientalis caterpillar
4.1.1 Agricultural control Improve the quality of forest management and complete tree pruning and other processes at suitable times. During the overwintering period of the pest, the bark can be ring-peeled and burned, or a large area of larvae can be killed manually.
4.1.2 Physical control Use the phototactic characteristics of the pest to kill with black lights.
4.1.3 Biological control Use natural enemies of the pest to control the pest when the amount is small, such as parasitic wasps.
4.1.4 Chemical control If there are many larvae, it is necessary to take measures for prevention and control early. A 25% chlorpyrifos solution can be evenly sprayed, with a dosage of 23-45 g/667 m², which can achieve an ideal control effect. Note that the medicine should be sprayed under good weather conditions and low wind speed.
4.2 Leaf blight of Platycladus orientalis
The control methods for this type of disease include: one is to remove diseased leaves in autumn and winter to completely remove the pathogen, focusing on the comprehensive control of overwintering pathogens. The second is to spray a 1:1:100 Bordeaux mixture every half month from May to August to prevent the disease. If the plant is initially infected with the disease, it should be dug up to prevent the disease from spreading widely. The third is that if the density of Platycladus orientalis is too high, it is necessary to cut down appropriately to ensure good lighting conditions in the forest, reducing the probability of disease occurrence.
4.3 Leaf blight of Platycladus orientalis
The control methods for this type of disease include: first, prune branches and stems reasonably to optimize the growth conditions of Platycladus orientalis and reduce the probability of pathogen infection. Second, increase the supply of fertilizers to provide good conditions for the growth of Platycladus orientalis. Third, during the peak release stage of ascospores, a 40% carbendazim solution can be used for control. Fourth, select seed types with higher disease resistance to improve the plant's own resistance.
5 Summary
With the continuous development of Platycladus orientalis cultivation techniques, during the comprehensive cultivation of Platycladus orientalis, it is necessary to develop more complete cultivation and management plans according to specific cultivation areas, strengthen the application level of Platycladus orientalis cultivation techniques, and comprehensively improve the application and management level of Platycladus orientalis cultivation techniques, further providing effective guarantees for the development of forestry resource construction work.
The above is the complete content of[] on how to plant Platycladus orientalis seeds and the cultivation and maintenance methods for Platycladus orientalis, for your comprehensive understanding and reference!