Lettuce planting: how to grow pollution-free lettuce?

How to grow pollution-free lettuce? Is there any way? You help to introduce lettuce as a leafy vegetable, it is easy to fail to meet the quality standards due to pesticide residues of diseases and insect pests. There are many diseases and insect pests in lettuce, and the treatment is very difficult. It is easy to use chemical methods (pesticides) to control, and the effect is quick, but it affects the quality of lettuce and does great harm to the health of diners. Therefore, the use of cultivation methods (mainly rational fertilization) for control is an effective way to produce pollution-free lettuce. In addition to the basic fertilization methods, the production of pollution-free lettuce should pay special attention to the following two points: 1. Full fermentation of organic fertilizer: the production of pollution-free lettuce should be based on organic fertilizer and less chemical fertilizer. When using organic fertilizer as base fertilizer or topdressing, it is necessary to pay special attention to the fact that organic fertilizer must be fully mature and had better be treated with a professional starter. This can not only reduce the loss of nutrients, but also completely remove bacteria, eggs and other harmful substances in organic fertilizer, and solve the source of diseases and insect pests. 2. Application of high-quality bacterial fertilizer: biological bacterial fertilizer contains not only a large number of active bacteria for nitrogen fixation, phosphorus solubilization and potassium solubilization, but also organic matter, humic acid and trace elements, which can be applied in combination with other fertilizers in any period when lettuce needs fertilizer. High-quality bacterial fertilizer can not only save the amount of fertilizer, but also enhance the disease and insect resistance of lettuce and solve the problem of soil consolidation. Click for more lettuce planting techniques click to get more vegetable planting techniques