How Should Isatis Tinctoria Grow It? What Are The Key Points Of Field Management Of Banlangen?

Isatis Tinctoria, also known as Isatis INDIGOTICA, INDIGOTICA, root and leaf medicine, is commonly used in Chinese medicine.

How does Isatis Tinctoria grow it?

 1, seed seedling: the Year of the root does not seed, in plane harvesting banlan root, choose the root straight, thick not bifurcated, thick no pests and diseases of the root, according to the plant, row spacing 30 cm x 40 cm transplanted to the fertile retained seed field. Timely watering, in late November and then spread a thin layer of soil miscellaneous fertilizer against the cold. The next spring when returning to green, watering loose soil, seedling height 6 ~ 7 cm, topdressing, watering, promote vigorous growth. When flowering, top with fertilizer again 1 time, make the seed is full. After the seeds are mature, harvest them in batches, dry them in time after harvest and keep them in good condition.

 2. Seed Treatment: Soak the seeds in 30 °C warm water for 3 ~ 4 hours before sowing, remove the seeds and mix them with dry fine soil to sow.

 3. SOWING: Spring sowing and summer sowing. Spring sowing is carried out between Qingming and grain rain; summer sowing is carried out at the summer solstice. The spring sowing commodity quality is superior, the sowing method may use the drill or the broadcast sowing, generally uses the drill. In the good border, wide furrow for sowing, row spacing 18 ~ 20 cm, sowing width 4 ~ 5 cm, after sowing covered with soil, slightly suppressed, that is watering. The sowing amount is 1.5 ~ 2 KG/667 M2, and the seedling can be produced in 5 ~ 10 days.

What are the key points of field management of Banlangen?

 1. When the height of fixed seedling was 4 ~ 7 cm, the seedling was fixed according to the plant distance of 3 ~ 4 cm, combined with loosening soil and weeding. After fixed seedlings, should be dry and not wet in the early growth stage, to promote the root under the bar, the late growth of soil moisture to promote nutrient absorption. Pay attention to drainage in high temperature and rainy season.

 2, shovel, weeding loose soil, root deep, fork less, leafy. During the whole growth period, three shovels were needed: the first shovels were carried out at the end of May, the depth was 15-20cm; the second shovels were carried out at the end of June, the depth was 20-25cm; and the third shovels were carried out at the end of September. If using herbicide weeding, can choose"Jing Ke Cao Neng", when the weed 3 ~ 5 leaves when spraying, 40 ml per mu of water 50 kg spray. 

3. topdressing and leaf cutting topdressing in early June, 40 ~ 50kg of ammonium sulfate per mu and 7 ~ 15kg of compound fertilizer containing calcium and magnesium were applied. Under the conditions of sufficient water and fertilizer and good growth, the leaves can be harvested twice in late June and late August with stubble heights of 3 ~ 5 cm. Every time after cutting leaves should be timely fertilization, irrigation, avoid the use of ammonium bicarbonate, so as not to burn the leaves.