I, seedling propagation
1, seedbed construction: Andrographis paniculata seeds fine, seedlings out of the soil ability is poor, the need to turn the seedbed land 2 ~ 3 times, broken soil, and then up bed, every 30 square meters bed with fully fermented rotting manure 200 kg, manure and soil fully mixed, leveling the bed.
2, sowing time: the sowing time of Andrographis paniculata is selected around the Ching Ming Festival, before sowing with 40 ~ 45 ℃ warm water soaked 1 ~ 2 days (or with fine sand mixed with seeds rubbed seed coat method of treatment), sowing the seeds fished out and mixed with the grass ash sown in the seedbed, covered with a thickness of about 3 millimeters of fine soil, and immediately drenched with water with a sprayer so that the soil is moist.
3, seedbed management: after sowing cover the film, cover the straw on the film, heat preservation and moisture. Sowing amount per 30 square meters seedbed sowing 50 ~ 60 grams appropriate (cultivated seedlings can be 1 ~ 2 acres of field planting). When the seedbed germination 50% ~ 70%, immediately peeled off the ground film and straw, watering after the emergence of seedlings, every 7 days watering dilute manure, to promote rapid growth of seedlings.
Two, field preparation
1, field selection: before transplanting, select the soil ph value between 5.6 ~ 7.4, flat terrain, wind and sunny, fertile and loose, easy drainage and irrigation of the mountains and flat as a transplant field.
2, the application of adequate fertilizer: deep turning of the field, per mu Shi rot pig and cow dung 2000 kilograms, calcium magnesium phosphate 20 kilograms as fertilizer, and then rake flat for 120 ~ 130 cm wide, 15 ~ 20 cm high border, the field around the opening of a 30 cm deep drainage ditch.
Three, transplanting and planting
1, transplanting with soil: Andrographis paniculata seedling 1 month later, seedling height of 10 cm, the growth of 4 to 5 pairs of true leaves can be transplanted to the cultivation site. The day before transplantation, the first nursery watering water, from the seedbed to select robust seedlings with soil transplantation, planting plant distance of about 2020 cm or so, planting 12,000 plants per mu.
2, seedling management: seedlings transplanted a week after the watering of a light manure, to promote the growth of fixed roots.
Four, field management
1, water management: Andrographis paniculata is afraid of moisture and drought, sensitive to the water response, to often keep wet, but not too wet. Seedling management focuses on keeping the ridge moist. If there is no rain after transplantation, watering 1~2 times a day. After slowing down, you still need to keep the ground moist and water every 3~7 days.
2, reasonable fertilizer: through the lotus production requires a lot of nitrogen fertilizer, must be timely fertilizer. General requirements of 3 times fertilizer. After slowing down the seedling, add water diluted human urine 3000 kg per mu or urea 10 kg seedling. In the future, every 20~30 days fertilizer, 15~20 kg of ammonium sulfate per mu or other nitrogen fertilizer. After the plants are monopolized, fertilizer can be applied with water when irrigating.
3, topping cultivation: Andrographis paniculata whole herb for medicine, seedling height of about 30 centimeters can be taken off the top, to promote the growth of side shoots. At the same time combined with the cultivation of soil and weed control, to prevent the collapse. If you want to keep the seed, in full bloom without topping, while removing the inflorescences that can not bear fruit and mature.
Five, pest control
1, standing wilt, occurring 1 to 2 pairs of true leaves period, can reduce soil moisture, 50% carbendazim treatment of the soil, or 1000 times the liquid watering of the diseased area.
2, sudden collapse disease occurs when there are 2~3 pairs of true leaves, you can control the temperature, pay attention to ventilation, and strengthen the seedbed management.
3, black stem disease occurs in the adult plant period, can strengthen field management, timely removal of stagnant water, prohibit continuous cropping, the onset of 50% carbendazim 1000 times liquid spray or irrigation of the diseased area, and epidemics, viral diseases and other hazards.
4, insect pests such as cotton bollworm, insect pests.
Six, harvesting and processing
Andrographis paniculata can be harvested when it grows to flowering buds, harvested with a sickle in the stem base of the 2-3 section harvested to dry. Cultivation of Andrographis paniculata can be harvested 2 times a year, the product per acre up to 500 ~ 800 kg, sun-dried Andrographis paniculata dried products to the body dry, color green, leafy, no impurities, mold for the best.