Fertilization technology: The production of pollution-free vegetables emphasizes the use of abundant organic substances such as livestock manure, green manure, cover crops, and compost. The application of organic fertilizer can improve the soil structure, maintain the decomposition of soil moisture and nutrients, and enhance plant resistance. Organic fertilizer generally decomposes slowly, so it should be applied to the soil earlier (more than three weeks) to promote the decomposition of nutrients and the absorption of plants. The organic fertilizer is well decomposed before application to avoid poisoning and disease. The decomposing of organic fertilizer is generally completed by the composting process, and the current composting process is divided into two types: traditional and rapid composting. Traditional composting uses only microorganisms in organic fertilizers for natural fermentation, and the time is usually 1-3 months. Rapid composting is mainly to inoculate a kind of microbial fermentation strain in the composting raw material, artificially speed up the fermentation process, and the time is generally 1-3 weeks. Pest control: In the cultivation of pollution-free vegetables, biological and physical cultivation measures are mainly used to control pests and diseases. Mainly include: 1. Selection of resistant varieties and virus-free seedlings. 2. Adopt a reasonable rotation system, such as vegetables, fruits, vegetables and food. 3. Use biological pesticides such as Bt emulsions. 4. Use natural enemies. 5. Physical measures, you can use physical moth lights. 6. Tillage measures: covering weeds, controlling temperature and humidity, etc. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Stomach Tube,stomach tube sizes,Feeding Tube,tube feeding Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesia.com