Planting technique of Polygala tenuifolia

Polygala tenuifolia is a commonly used Chinese herbal medicine, Polygala tenuifolia medicinal value is particularly high, is regarded as a top-grade medicinal materials, taste slightly bitter, for the treatment of expectoration, amnesia, sedative and many other symptoms have a particularly good effect. So how does Polygala grow? Let's find out how to plant Polygala together with Xiaobian below!

Cultivation techniques of Polygala tenuifolia

Land selection and preparation

According to the growth habits of Polygala tenuifolia, select loam or sandy loam with high dry terrain and good drainage, and also select general farmland planting. Because Polygala is perennial plants, plowing must be applied with sufficient base fertilizer once. Apply 2500- 3000kg of fully decomposed manure per 667 square meters, deep ploughing 25- 30cm, 50kg of calcium superphosphate can be applied when ploughing, then rake fine and make flat bed.

2, planting technology

Seed propagation, direct seeding. Generally, water the whole plot and sow it after the water completely seeps down. Sowing quantity is 2kg per 667m2, soaking seeds in water for 12 hours before sowing, mixing with 3- 5 times fine sand after taking them out, opening shallow furrows on the ridge surface according to row spacing of 18- 21cm, spreading seeds evenly into the furrows and covering with soil. After sowing, slightly suppress and water. About 15 days after spring sowing, seedlings emerge in the spring of the second year after winter sowing.

3. Field management

(1) Thinning and replanting seedlings. When the seedling height is 3--5cm, thinning seedlings according to the plant spacing of 3--6cm, and supplementing seedlings in time in places lacking seedlings.

(2) Loosening and weeding. Polygala plant short, seedling growth slow, should pay attention to loose soil weeding, so that there is grass that pull out. Loose the soil shallowly. Use rake to loosen the ground evenly and shallowly. Keep the soil loose and moist twice in succession. Avoid weeds covering the plants.

3) Water and fertilizer. Polygala love dry, in addition to seed germination and seedling stage need appropriate watering, in the late growth period generally do not need regular watering. In winter and spring and April-May every year, topdressing once, mainly phosphorus fertilizer, cake fertilizer 20--25 kg or calcium superphosphate 20kg per 667 square meters.

(4) topdressing. From mid-June to mid-July every year, spray 50--60kg of 1% potassium sulfate or 80--100kg of 0.3% potassium dihydrogen phosphate every 667 square meters, spray once every 10 days, spray 2--3 times continuously, spray time after 5 pm is best. Spraying potassium fertilizer could enhance disease resistance, promote root growth and expansion, and further improve root yield.

Propagation method of Polygala tenuifolia

1. Seed collection: Polygala tenuifolia can be propagated by seeds, direct seeding or seedling transplantation. Since the capsule of Polygala tenuifolia dehisces when it matures and the seeds are easy to be scattered on the ground, the seeds should be harvested when the fruit matures in July to August.

2. Field direct seeding: spring sowing is carried out in the middle and late April, autumn sowing is carried out in the middle and late October or early November, seeds are evenly scattered into ditches on the whole ground, covered with soil of 1~2 cm, shallow ditches are drilled according to the row spacing of 20~23 cm, the seeding amount per hectare is 11.25~15 kg, after sowing, slightly suppressed and irrigated with sufficient water, about half a month after sowing, autumn sowing begins to sprout in the spring of the following year.

3. Seedling transplanting: in the first and middle of March, drill on the seedbed, cover the soil with 1 cm after sowing, keep the seedbed moist, the seedbed temperature is 15~20℃, the seedlings emerge about 10 days after sowing, and the seedlings can be planted with a height of about 6 cm. The planting should be selected on rainy days or in the afternoon, according to the row spacing of 22*5 cm.

Pest Control of Polygala tenuifolia

blight

Damage characteristics: the lower leaves of the plant began to disease, gradually spread upward, the early stage of the disease leaves produced brown round spots, then the disease spots continue to expand, the center was gray brown, and finally the leaves scorched, the plant died.

Control methods: Mancozeb 800-1000 times solution or 800 times solution of poison mildew foliar spraying, generally 7 days spray once, twice can control harm.

aphids

Damage characteristics: damage to tender leaves of plants from late may to early june.

Control methods: available 40% dimethoate emulsion 2000 times spray kill, spray once a week, spray twice to control its damage.

Douyuanqing

Damage characteristics: June to August, damage leaves and tender stems.

Control methods: 5-10 mg/L of enemy kill spray kill, spray 2 times, 5-7 days apart, can kill all.

Analysis on Market Benefit of Polygala tenuifolia

Polygala tenuifolia is a large quantity of medicinal materials, which is in great demand. Due to a large number of mining, wild resources are gradually withered and brown. Polygala tenuifolia commodity shortage day by day, especially for export of medium and high grade Polygala tenuifolia tube has been rare, Polygala tenuifolia meat in 1985 only 7~8 yuan/kg, now to 30~58 yuan/kg, export standard Polygala tenuifolia tube price as high as 95 yuan, and there is a continuing upward trend. Polygala tenuifolia can produce 7~ 10kg seeds per mu in the second year. The third year seed can reach 10~15 kg/mu. The yield of medicinal materials is 250~300 kg, with a total yield of more than ten thousand yuan per mu in three years and an average annual yield of more than 3000 yuan per mu. The artificial cultivation of Polygala tenuifolia is mature and there is no technical problem. Polygala tenuifolia L. has been a best-selling medicinal material for export for many years. Wild Polygala tenuifolia L. resources are exhausted, so it is a good variety for developing medicinal material cultivation. Plant characteristics: perennial herbs, plant height 30-50 cm, cylindrical slender roots, brown. Above-ground stems tufted from base, erect or oblique, simple leaves alternate, glabrous. Racemes, born on top of stem, flowers sparsely arranged, green-white, margin purple, seeds ovate, gray-black, with white tomentose. Flowering from April to July, fruiting from May to August.

Through the above content we understand the planting technology of Polygala, I believe everyone has a certain understanding. Polygala's medicinal properties are particularly good. I believe many people have heard of it. It has good effects on many diseases and is known as a life-nourishing medicine. How does it seem that the planting prospects of Polygala are very broad.