Fertilizing Technology: Pollution-free vegetable production emphasizes the use of rich organic substances such as livestock and poultry manure, green manure, cover crops, and compost. Topdressing organic fertilizer can improve soil structure, maintain soil moisture and nutrient decomposition, and enhance plant resistance. Organic fertilizers generally decompose slowly, so they should be applied earlier (more than three weeks) to promote the decomposition of nutrients and the absorption of plants. Organic fertilizers are well-established before application to avoid poisoning and pathogenicity. The decomposing of organic fertilizer is generally completed through the composting process. The current composting process is divided into traditional and fast composting. Conventional compost uses only microorganisms in organic fertilizers for natural fermentation. The time is generally 1-3 months. Fast composting is mainly inoculated with a microbial fermentation strain in the compost material, artificially accelerating the fermentation process, the time is generally 1-3 weeks. Pest control: Biological and physical cultivation measures are mainly used in the cultivation of pollution-free vegetables to control pests and diseases. Mainly include: 1. Selection of resistant varieties and virus-free seedlings. 2. Adopt a reasonable rotation system, such as the mode of vegetable, fruit and vegetable dishes. 3. Use biological pesticides such as Bt emulsions. 4. Use natural enemies. 5. Physical measures can use physical moth killer lamps. 6. Tillage measures: cover weeds, control temperature and humidity, etc.
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