It is suitable for cultivation in an area with an average temperature of 8-10 °C. The cold resistance can be improved with the addition of seedling age. Annual wheat seedlings seeded with seeds may be frozen at around 10 °C. The citron is light, more resistant to moisture, suitable for people who are good at riverside and fertile soil around the yard. Generally, sandy loam is good. Suitable soil pH is pH 5.5-8.0. The cultivation management methods of camphor are as follows:

1. Selection of categories. Generally, it is mainly based on the selection of red citron.

2. Cultivate seedlings. It is advisable to use arch sheds and greenhouses for seedlings. The average acreage is 2-3 kg, and the number of seeds per kilogram is 10-12 thousand. However, the germination rate of the seeds of the citronella is low. It should be soaked in warm water of 25-30 °C for 12 hours before sowing. After soaking the seeds, the seeds are mixed with the fine sand and directly sown on the seedbed. The seedbed should be selected in areas with high topography, loose and plump conditions, and good drainage and irrigation conditions. The fertilizer should be applied early, and a layer of straw should be covered after sowing to facilitate watering. The fertilizer is mainly organic fertilizer, and it is suitable for cultivation in March-April.

3. Seedling management.

(1) Germination period. It takes 7-10 days for seed germination after germination, and 15-20 days for soaking seeds. During the cultivation to emergence, the soil should adhere to a certain humidity, and water should be poured every 1-2 days, the daytime temperature is 25 °C, and the nighttime is not lower than 8 °C.

(2) Wheat seedling stage: seedling height 6-7 cm, 2-3 pieces of real leaves are poured once, and combined with loose soil weeding, the root of the seedling is 0.5 cm thick, sprayed with 100-200 times of liquid urea, and sprayed with water. Pouring seedlings. Miao Chang has 4-5 true leaves and a height of about 10 cm. The spacing between the seedlings, the seedlings and the seedlings is 25 cm and 30 cm, and about 10,000 seedlings per mu. Shade nets can be used around noon.

4. Post management. From June to August, it is the fast-growing period of seedlings production. The amount of phosphorus and potassium fertilizer can be compensated for in the right amount. The base fertilizer can not be topdressed. The surface of the leaves is sprayed 1-2 times with potassium dihydrogen phosphate. The base fertilizer lacks 10-15 kg of urea. After August, it is no longer topdressing. Defender.

5, seedlings processing. The dwarf treatment of seedlings is a key technical measure for the cultivation of camphor. The seedling height is controlled at 1-1.2 meters and the tree shape is fixed. There are 2 ways: (1) manual treatment: seedlings up to about 60 cm topping, side branches growing to 30 cm to bud, and so on, but this method is not conducive to material accumulation; (2) paclobutrazol treatment: from late June to early July Spraying 2-3 times with 15% paclobutrazol 500 times solution every 5-7 days, the effect is better.

6, fake planting. Spray 700-800 mg/kg of ethephon in late October to accelerate nutrient reflux and accelerate defoliation. When the seedlings are raised, the roots should be kept more, and the root length should be more than 20 cm. The fragrant leaves have a natural dormancy period of 17 days, and they can break their dormancy with fake plants. The method is: dig a ditch with a depth of 0.5 m and a width of 1-1.5 m at the back of the sun. After the seedlings are slightly packed, turn the head to the west or south and swing into the ditch. The roots are sprinkled with water, and the temperature is below 10 °C for 20 days. The low temperature can be.

7, greenhouse cultivation

(1) Transplanting: Through the planting, the camphor seedlings are transplanted into the greenhouse. The fertilizer in the shed should be based on organic fertilizer and phosphorus and potassium fertilizer. It can apply 300 kg of decomposed organic fertilizer, 50 kg of superphosphate and 50 kg. The ternary compound fertilizer has a culture density of 100-150 seedlings per year and 80-120 seedlings per year. After planting, it is sprinkled with water and covered for 5-10 days.

(2) Training: The temperature of daytime is controlled at 20-25 °C, and it can be more than 10 °C at night; depending on the seedlings, it can be sprinkled once every 10 days. After the axillary buds are harvested, 15-20 kg of urea is poured into the acre, and it can also be sprayed with potassium dihydrogen phosphate. The axillary buds can be harvested by growing to 20 cm or more. When harvesting, the first bud is harvested after the top bud is harvested, and the harvest is usually taken once in 8-10 days, and can be harvested 5-7 times. The top buds are all picked, and the lateral buds leave 2-3 leaves in the stem, which can harvest about 1200 kg per acre. 2-3 days before each harvest, foliar spray fertilizer, after harvesting, apply 10-15 kg of urea and sprinkle water in time.

8, seedlings management. Before and after the Qingming to Guyu, the temperature is stable above 10 °C, and the seedlings are 3-5 days. The camphor seedlings are moved to the outside, transplanted by 20 cm and 30 cm, 8000 plants per mu, and the ground part is cut at 15 cm above the root. Others apply the same as above. Generally, the seedlings can be produced for about 5 years.

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