Planting Rehmannia glutinosa: how to manage the growing period of Rehmannia glutinosa?

How to manage rehmannia growth period? Please give a detailed introduction to the management of rehmannia growth period can refer to the following methods: 1. Weeding in rehmannia field: After rehmannia enters the growth period, the root system develops rapidly. It is necessary to strengthen intertillage, promote deep root system, keep soil loose, control excessive plant growth and prevent weeds from growing. Strive for higher yields and quality. Dihuang growth period generally cultivated 4-5 times, the depth of cultivation, to gradually deepen. However, attention should be paid not to plough too deep at one time, especially when the moisture content is poor in drought, if the cultivation is too deep at one time, large pieces will be lifted, too many roots of rehmannia will be damaged, and the moisture will be removed by ventilation, which is unfavorable to the growth of rehmannia. After the stem and leaf of rehmannia are sealed, only weeds in the field are pulled out and no longer cultivated. 2. Dihuang plucking buds: In order to reduce the consumption of nutrients and promote the growth of rhizomes, when rehmannia buds, should be combined with weeding to remove buds and remove branches. Advocate one seedling per plant, remove excess bud tips, avoid nutrient consumption, and make plants not overcrowded, conducive to the healthy growth of plants. When the bottom leaves turn yellow in August, remove the yellow leaves in time to keep the field clean. 3. Fertilization and irrigation of rehmannia: In the growth period, topdressing should be carried out as early as possible. In the early stage of growth, nitrogen fertilizer should be applied mainly to promote plant health, and in the late stage of growth, phosphorus and potassium fertilizer should be applied mainly to promote rhizome growth and improve medicinal properties. When the plant grows 10 leaves and reaches 6-10 cm high, 75-100 kg of soybean cake or 10-15 kg of ammonium sulfate are applied per mu. Sprinkle alongside the plants. Note: fertilizer should not adhere to the leaves, so as not to burn seedlings, damage plants. After each fertilization, water should be watered in time to facilitate the full absorption of nutrients. High temperature rainy season, root rot occurs easily, resulting in yield decline, or even harvest, should be timely drainage fertilizer, generally 15 kg urea per mu. 4, timely removal of cross-skinned roots: In addition to the taproot, rehmannia can also grow slender underground stems along the surface, commonly known as string skin roots, which will lose more nutrients and should be eradicated in time. Click for more rehmannia cultivation technology Click for more herbal cultivation technology