Burdock is a genus of the genus Aster, a two-year or three-year-old herbaceous plant. It is also known as a strong-toned, rooted vegetable. In Shandong and Jiangsu, there is a certain area of ​​planting, mainly spring burdock, mainly exported to Japan, is one of the important export vegetables in northern China.
Burdock is a deep-rooted vegetable with strict requirements for soil. It is suitable for cultivation of sandy soil with deep soil, uniform upper and lower soil layers, well-drained and loose fertile soil.
The burdock needs more fertilizer. Under the condition of 1000 kilograms of meat root per burdock, about 14 kilograms of pure nitrogen, 18 kilograms of phosphorus pentoxide, and 9 kilograms of potassium oxide are needed.
Burdock has a long growing period and requires a large amount of fertilizer. Each acre shall be filled with 2,000 to 3,000 kg of decomposed organic fertilizer or 400 kg of Suichang organic soybean meal, 50 kg of long-lasting compound fertilizer, 25 kg of potassium dihydrogen phosphate, and 25 kg of 50% potassium sulfate as base fertilizer. Groove application.
The top dressing is usually applied twice during the whole growth process. The spring sowing of burdock grows into 4 strong leaves and enters the vigorous growth stage. At this time, it is necessary to carry out the top dressing for the first time. Ditching can be applied at a distance of about 10 cm from the root, and the long-lasting high-nitrogen compound fertilizer can be applied per acre. Kilograms, should not be applied too close to the plant, so as not to hurt the roots of the fertilizer to produce more roots and reduce the quality of many; the roots began to enlarge the fleshy root, in order to promote the rapid growth of fleshy roots, the second top dressing. According to the growing trend, the general stability of long-term high-potassium compound fertilizer 25 kg, 50% of instant potassium sulfate 5 kg. In order to obtain high-yield and high-quality products, combined with the second top-dressing, foliar spray 0.5% of a large number of elements foliar leaf God 2 to 3 times.
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