One, cutting bed requirements
1. The cutting bed should be selected in a well-ventilated and well-drained land. Press 1 to 1.2 meters of surface and operate the belt with 0.5 to 0.6 meters to build the bed. The surrounding of the bed should be surrounded by vertical bricks, and the boring bed surface should be deepened and leveled to prepare Fill the substrate, the operating zone is hardened with bricks.
2. Substrates: Stone-to-stone powder with good water permeability and air permeability should be used, and clean Xihe sand can be used instead. The thickness of the substrate is generally 4 to 5 cm, and 2 cm thick coarse sand is added to the lower layer.
3. Sunshade: Use solar greenhouses to cover the sunshade with a shading of 65%. No solar greenhouses can also use bamboo rafts or steel racks. Generally, the distance between the north and the south is 20 to 30 meters, and the width is 6 to 8 meters. The scaffold should be firm to prepare for the winter cover film.
4. Micro-spray: due to leaf cuttings in the growing season, micro-spraying is the main measure of cooling and humidification. The nozzles should be distributed evenly according to the diameter of their sprays, and no need to leave dead corners. It is best to use a fully automatic intermittent spray device. Poor manual control is also available.
Second, cutting requirements
1. Cutting time: Cutting from the middle of May to the beginning of August, it is best to start before and after the start of the new growth peak.
2. Mother plant and cuttings: Cuttings are internal factors that affect the survival of cuttings. According to experience, it is better to choose a young plant (1 to 5 years old) that grows robustly and has no pests. The cuttings are selected from annual semi-lignified plexiform branches or monophyly and biennial growth robust plexiform branches, generally not more than three years old branches.
3. The management of the cuttings: The mining strips should be carried out before 10 o'clock in the morning and after 4 o'clock in the afternoon. After the harvest, the cuttings should be arranged in the shade to reduce water loss. Above the base of cuttings, 4 to 5 centimeters are required for branching and leaves, leaving 2 to 3 leafy branchlets at the upper part, leaving 5 to 6 centimeters of cutting tips for leafy branchlets, leaving a certain number of leaves for rooting. Due to the rooting type of the callus in the callus, the wounds caused by the debranching of the base are also conducive to rooting. After the branches are treated, 30 to 50 roots 1 are bundled (basis to be flushed) and immersed in a container filled with 2 to 3 cm of clear water for use.
Third, cutting
1. The base of the cuttings must be thoroughly sprayed with water and must not be inserted dry.
2. Before hormone treatment, the base of 500 g/kg guillotine lychee is used.
3. The row spacing is generally 4 cm 4 cm, or 5 cm 5 cm. It can also be inserted 2 cm 2 cm. After rooting, it can be transplanted. Cutting depth of 4 to 5 cm is appropriate, after inserting the matrix around the shoots should be compacted by hand.
Fourth, post-insertion management
1. Humidity Control: Humidity is a key factor influencing the survival of cuttings. It includes substrate humidity and air humidity. Generally, the moisture content of the substrate should be maintained at 15% to 25%. Excessive water volume and reduced air permeability can cause rotten branches and bad air. Humidity should not be less than 70%. Therefore, the time for microspraying should be determined according to the specific cutting time, weather conditions, and rooting conditions. Prolonging the water spray time in the high-temperature period should be appropriate. However, early, late and rainy days are required. As appropriate, less spray or no spray, the rooting period after the cutting is more than one month after spraying, after the rooting should be less spray, if there is heavy rain, but also timely drainage.
2. Pest control: Because the cutting is in the high temperature season, the humidity is large, and the branches are susceptible to disease. It is necessary to spray carbendazim or chlorothalonil once every other week. If there is leaf insects, it must be promptly administered.
3. If the transplanted plants are not transplanted in the current year, they shall be sprayed once every 15 days. Generally, 0.3% to 0.5% of imported urea or compound fertilizer is sprayed.
4. If transplanted in the same year, remove shading nets and water-controlling seedlings gradually after 2 months, so that the seedlings can gradually adapt to the external environment after planting.
There are different opinions about the origin of tea drinking in Zhong country: some people think that it originated in ancient times, others think that it originated in Zhou, Qin and Han Dynasty, Three Kingdoms, Northern and Southern Dynasties and Tang Dynasty. The main reason for the divergence of opinions is that there was no word "tea" before Tang Dynasty, but only the word "tea" was recorded. Until Lu Yu, the author of the Tea Sutra, the word "tea" was written in one picture. Tea ", so there is a saying that tea originated in the Tang Dynasty. Others are still said to have originated from Shennong and Qin and Han dynasties.
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