This standard stipulates the use of greenhouses for the cultivation of sorghum, pollution management, pest management, pest control and harvesting. This standard is applicable to the pollution-free production of Artemisia selengensis in the middle and south of the 冀.
First, the greenhouse construction specifications
The warm shed is a plastic shed with a grasshopper, spanning 6 to 8 meters, the rear wall is 1.2 meters high, the ridge is 1.6 meters high, and the length is 30 to 50 meters.
Second, the mouth of the arrangement
The greenhouse can be sown at any time. Sowing in early December, it can be listed in the Spring Festival.
Third, cultivation techniques
1. Variety selection. In the greenhouse, the cultivation of Artemisia selengensis is mainly based on Artemisia scoparia, such as Shanghai chicken feet, Artemisia scoparia and so on.
2. Nursery. (1) Seed treatment. Seeds were soaked in warm water at 30 °C for 24 hours before sowing, and then rinsed out and then spread out slightly, then wrapped in gauze, germinated at 20 °C ~ 25 °C, and sown after 3 to 5 days of whitening.
(2) Soil preparation and fertilization. Before the planting of Artemisia selengensis, 2,000 to 2,500 kilograms of decomposed organic fertilizer and 40 kilograms of all-element compound fertilizer were applied per mu. Spread evenly on the ground, deep ploughing, ploughing, squatting about 1.5 meters wide, and stepping on it with your feet to prevent it from sinking after watering.
(3) Sowing. Striping or spreading, when the line is first, the row spacing is 10-15 cm, and the depth is 1~2 cm. The ditch is watered by the pot, and the seed is poured into the soil after the water seepage. The soil is 1 cm thick. Before sowing, first water the sputum, sprinkle the seeds after the water seepage, and cover the soil 1 cm thick. The amount of seed used for seeding is 1.5 to 2 kg/mu, and the amount used for sowing is 3 to 4 kg/mu.
3. Field management. (1) Control the water and fertilizer. After sowing, the sage must keep the ground moist to facilitate emergence. When the seedling height is 3 cm, the topping is over the water, and the whole growth period needs to be watered 2 to 3 times. When the height of the seedling is 9 to 12 cm, chase the first fat, and rush into the quick-acting nitrogen fertilizer with water to 10 to 15 kg/mu.
(2) Control the temperature. The temperature of A. sinensis can be slightly higher after sowing. The temperature during the daytime is kept at 20 °C ~ 25 °C, and it is kept at 10 °C at night. After 4 to 5 days, the seedlings can be emerged. After the emergence, the daytime temperature is controlled at 15 °C ~ 20 °C, and at night 8 °C ~ 10 °C, be sure to prevent high temperature burning.
(3) Miao Miao. When the seedlings of Artemisia scoparia grow 1 to 2 true leaves, the seedlings start, and the seedlings of the seedlings should be 4 cm square. In the case of strips, the seedlings must be separated.
4. Disease prevention and treatment. The main diseases of Artemisia scoparia in the greenhouse are leaf blight and downy mildew. In the early stage of the disease, spray 40% polysulfide suspension 500 times solution, 70% methyl thiophanate WP 500 times solution or 50% phlegm WP 1500 times solution, spray once every 5 to 7 days. , spray 2 to 3 times in a row.
5. Harvest. Artemisia scoparia plant is as high as 20 cm, and harvesting begins with 12 to 13 true leaves. Harvesting should not be too late, so as not to affect quality. Harvesting can be applied to the ground for one-time harvesting or multiple harvesting. Multiple harvesting can leave 2 to 3 leaves in the base of the stem. After harvesting, the topdressing and watering can promote the growth of the lateral branches. Generally, it can be harvested once every 20 to 25 days. Harvest 2 or 3 times.
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