1、 Planting method
1. Sowing time: wormwood is usually sown in early spring, usually from March to April. At this time, the climate is relatively warm, which is conducive to seed germination and seedling growth. If the temperature is too high, it will often restrict its growth, and high temperature and high humidity are also easy to breed bacteria, so as to make seedlings sick p>
2. Land selection and leveling: the medium soil with deep soil layer and rich organic matter is generally used for planting wormwood, and the soft and fertile sandy loam is the best choice. After selecting the land, it is necessary to carry out deep tillage with a depth of more than 30 cm, which can loosen the soil and bury the grass seeds deeply to remove some weeds p>
3. Apply enough base fertilizer: proper fertilization is required during land preparation. Generally, rotten farm manure is used, with about 30-45 tons per hectare. If not, organic fertilizer can be applied, which only needs 750 kg per hectare. Fertilizer must ensure that the content of nitrogen, phosphorus and potassium is more than 20%. At the same time, it also contains a lot of amino acids and organic matter, and does not contain harmful substances such as heavy metals p>
4. The seed should be sown in a layer of fine soil with a thickness of 40-50 cm. Proper watering is required after sowing to keep the soil moist p>
5. Follow up maintenance: after spring, weeding needs to be done well. When the seedling grows to 30 cm high, it needs proper topdressing. Special seedling fertilizer can be sprinkled in rainy days, 60-90 kg per hectare, and liquid fertilizer should be sprayed in sunny days. According to the humid climate, topdressing is generally carried out together with soil loosening. In addition, pay attention to irrigation and drainage in rainy season p>