High-yielding cultivation techniques of Radix asparagi

Tiandong, alias Tianmendong, Xiaoye Qing, three hundred sticks. The use of underground tubers for medicine has the effect of nourishing yin and moistening dryness, clearing the lungs and promoting fluid. It mainly treats deficiency, tuberculosis, fever, lung dryness, cough, hematemesis, injury and thirst, intestinal dryness and constipation and so on. Mainly produced in Sichuan, Guizhou, Hunan, Zhejiang and other provinces and regions.

The morphological characteristics are perennial climbing herbs of Liliaceae, and the whole plant is glabrous. The root is fleshy, fusiform in the middle and proximal end. Stems not erect, up to 1-2 m long, branches angled or narrowly winged; leaflike branches usually clustered, flattened, or slightly triangular, sickle-shaped, degenerated due to keel of midrib; leaves scalelike, apical long-pointed, with woody anatropous thorns at base. Flowers usually 2 axillary, unisexual, dioecious, light green; berries globose, red at maturity, with one seed.

First, growth habits. Winter prefers a warm and humid environment. Happy shade, afraid of bright light. It is better to cultivate sandy loam with deep soil layer, loose and fertile soil and rich organic matter. Heavy clay and saline-alkali land are not suitable for planting.

Second, soil preparation and fertilization to select high-lying, well-drained shady slope land, intensive cultivation. Combined with soil preparation, apply sufficient accumulated fertilizer: 5000 kg of soil miscellaneous fertilizer, 26 kg of urea and 50 kg of phosphorus and potassium fertilizer per mu. Then make beds and wait for sowing.

Third, there are two kinds of seed propagation and separate plant propagation. Ramet propagation is often used in production. The sowing time is spring sowing and autumn sowing. Spring sowing before and after the Qingming Festival, autumn sowing after seed collection.

After the seeds are propagated and dried, the seeds are easy to lose their vigor. Therefore, after the seeds are ripe and harvested, they should be rubbed and peeled immediately, cleaned and sown in time. If it is too late to sow seeds, they can be stored in the proportion of 1:3 mixed with wet sand. When sowing, first open a shallow ditch on the finished border surface, and then spread the asparagus seeds evenly into the ditch, cover the soil, water, cover weeds to preserve soil moisture, in order to facilitate seedling emergence. After the seedlings were collected, the field management was strengthened, and after growing for one year, it was planted on the finished border surface according to the row spacing of 30 × 20 cm. The sowing rate is 10 kg per mu. Raise seedlings and transplant 10 mu.

In ramet propagation, the healthy and pest-free asparagus mother plant was divided into 5 clusters, with 2 buds in each cluster and 3 tubers in 2 Mel. According to the row spacing of 30 × 20 cm, it was planted on the finished border. Watering to preserve soil moisture, in order to survive.

Fourth, after field management, attention should be paid to ploughing and weeding. Timely watering in dry weather and timely drainage in cloudy and rainy weather. Because Tian Dong is afraid of strong light, we can properly interplant corn, sorghum and other tall crops before and after Grain Rain to shade. The Beginning of Autumn should top fertilize once before and after: 10 kg urea and 10 kg potassium dihydrogen phosphate per mu. Spread a layer of soil fertilizer in winter.

Fifth, the prevention and control of diseases and insect pests in winter is less, if found in accordance with the routine control. The main pests are fire spiders which can be sprayed with chlordimeform water agent 500 times. Spray once a week, three times in a row.

Harvest and processing winter was harvested after the aboveground stems and leaves withered in the autumn of 3-5 years after planting. Before mining, cut off the aboveground stems and leaves and then dig out the underground tubers, remove the soil, and leave the mother plants and small tubers as seedlings. Boil the tubers in boiling water for 12 minutes, peel off the skin, and when baked to 80% dry, fumigate with sulfur and then dry. The yield per mu is 300 Mu and 500 kg.