How is the sable? Cultivation techniques and precautions of Aster

The sable is aliased to scorpion, scorpion and so on. It is a kind of herbal medicinal material for the treatment of cold and cough. It is a kind of herbal medicine for treating cold and cough. Many cough medicines are made from purpura. With the fiery heat of the medicinal planting industry in recent years, sable cultivation is also loved by growers. .

First, the morphological characteristics

Herbs perennial, plant height 30 to 150 cm. Rhizomes are short and thick, with many fibrous roots, densely grayish red or purplish red. The base leaves are clumped. Stem leaves alternate, sessile; leaf blade elliptic or oblong, irregularly serrate serrate margins, sparsely pubescent on both sides, base cuneate. Flowering period from July to September, fruiting period from September to October.

Second, growth habits

Purple scent is warm and humid, and it is cold-tolerant, more resistant to phlegm and afraid of drought. Hi-fertilizer, but the soil conditions are not strict, except for saline-alkali land and arid sand, it can grow, but it is better to use humus-rich loam and sandy loam.

Third, cultivation techniques

1. Selection of land and land preparation: Ziyan Xifei, it is better to choose loose and fertile loam or sandy loam soil, and poorly drained depression and sticky soil should not be cultivated. Each acre of farmer's fertilizer is 4000 kilograms, deep-turned, flattened, and made 1.3 meters wide.

2. Propagation method: Propagation with rhizomes. Planted in the winter season from December to January. Before planting, the rhizome with thick, purple, internodes and buds was planted and cut into small pieces of 4-6 cm. The section should have 2 to 3 buds, and the groove with a row spacing of 25 to 30 cm and a depth of 6 to 8 cm, according to the plant spacing of 15 to 20 cm, into the rhizome section 1 to 2, the soil is slightly pressurized and watered. 15 to 20 kg of rhizomes per acre.

3. Field management:

(1) After cultivating and weeding, after the seedlings are out, the cultivating and weeding should be carried out in time. The initial stage should be shallow, and after summer sealing, the grass should only be pulled by hand.

(2) Appropriate amount of water is needed during the irrigation period. After June, a large amount of water is needed. In the rainy season, attention should be paid to the accumulation of water.

(3) Topdressing should generally be carried out 2 times, in the second time in June, the second time in July and mid-July, each time the per mu of ditch is applied to 2000 kg of human waste water, and 10 to 15 kg of superphosphate is applied. In addition, the flower buds should be destroyed before flowering from June to July to promote the growth of the underground.

4. Pest control:

(1) Leaf blight: It occurs frequently in summer, especially in the hot and humid seasons, which mainly affects the leaves. Control method: rotation; before the onset and early onset, use 1:1:120 Bordeaux mixture 200 times liquid anti-mildew spray.

(2) Powdery mildew: occurs from June to October, which harms the leaves. The control method is the same as leaf blight.

(3) Pests: There are mainly underground pests such as tigers, crickets and crickets.

Fourth, harvesting and processing

In the late October of the year, the leaves were harvested from green to yellow before the spring. Cut the leaves and leaves, remove the roots, remove the soil, dry or cut into sections and then dry.

Precautions for the cultivation of Zijing:

1. The rhizome of the purpura needs to be treated before sowing, the treatment method is as follows: the rhizome is soaked in the nutrient solution for 20 minutes, and the dry stem is taken out, and the nutrient solution contains gibberellin 0.2 mg/L. , thiourea 1mg / L.

2. The rhizome has a seeding depth of 2 cm.

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