Seedling Protection Technology of New Zaosheng Tea
In recent years, Chun'an County has accelerated the development pace of clonal early tea. By the beginning of 2007, Chun'an County had planted 53,000 mu of clonal early tea (1 mu =667 square meters, the same below), 38,000 mu had been put into production, and 15,000 mu still needed to strengthen drought resistance and seedling protection, so as to improve the survival rate as the goal of management. Especially for tea plantations planted last winter and this spring, the following measures must be taken to protect seedlings.
1. Paving grass in time can keep water and cool down, loosen soil, and is the key technology of drought resistance. It is best to mow and spread the grass before mildew, and it will be better if you can spread it early. More than 1000 kilograms of grass are laid per mu of tea garden. Spread on both sides of the tea row, more than 10 cm thick.
2. Weeding and seedling protection weeds in the tea line should compete with tea seedlings for fertilizer and glory, and must be removed in time. Available hand pull out, but not moving the soil, pull out the grass time best before and after the mold season, shall not use glyphosate.
3. Thin fertilizer and frequent application of tea garden root and long leaves consume a lot of nutrients, although the base fertilizer has been applied at the time of planting, but the tea seedlings have not been absorbed and utilized in that year, so a small amount of fertilizer must be applied in time and many times. After the tea seedlings survive, it is generally required to fertilize once every half month. Start with 10% water manure irrigation, after June, apply once a month, apply tea fertilizer 10kg or urea 5kg per mu, dig a hole 6cm away from the tea bush.
4. Watering drought resistance into the summer dry season, every half month watering enough water once. The amount of watering per mu shall not be less than 3000 kg, so as to replenish water in time to moisten the soil at the root of tea tree; it is best to sprinkle irrigation with sprinkler irrigation where conditions permit. Watering and sprinkling should be carried out before 9 am or after sunset.
5. Young tea plants are most vulnerable to small green leafhopper, mites harm. Discovered diseases and insect pests should be prevented and controlled in time, 35% Saidan 50~ 70ml per mu, or 10% imidacloprid 15~ 20mg, or 20% tetramite 50~ 70ml spray on water.
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How does Dandong cuckoo spend summer in the south
Dandong rhododendron likes the warm, cool and humid environment. Dandong rhododendron cultivated in southern cities must be shaded by curtains in summer, otherwise, the sun will burn the leaves and affect the growth of pregnant buds. At the same time, lay a layer of grass bags or sawdust on the ground, about 5 cm thick, sprinkled with water. Put a layer of bricks on it, and then put the flowerpot on the brick. In case of high temperature, in addition to wetting the ground, spray on the leaves of rhododendron several times a day to form a cool and humid microclimate suitable for the growth of Dandong rhododendron. Southern cities enter immediately after the end of the rainy season in Huangmei.
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Sowing and Propagation techniques of Rhododendron
Wild cold-resistant rhododendron grows naturally on the mountains of Kuandian and Fengcheng, and has adapted to the cold, moist and acidic soil environment on the mountain, so it is not easy to be introduced and transplanted down the mountain, and garden scientists have made many efforts but failed. Since 1998, we have carried out experiments on downhill transplanting, cutting propagation and sowing propagation of rhododendron, and only the sowing method has been successful. The seedlings of Rhododendron frutescens reproduced by sowing have well-developed roots and fast growth, but they need to be cultivated for 5-6 years before they can enter the flowering stage. 1. Seed harvested in October
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