1. Adding organic fertilizer
It is recommended to apply human and animal waste, domestic garbage and commercial organic-inorganic compound fertilizer which are harmlessly treated by heap decomposing or biological high-temperature fermentation. Improve soil fertility by returning straw to the field and planting green manure.
2. Balance the application of large and medium trace element fertilizers, focusing on controlling the amount of nitrogen fertilizer
The essential elements of nitrogen, phosphorus and potassium and medium and trace elements necessary for crop growth cannot substitute each other. The lack of any nutrient element will affect the yield and quality of crops. According to the relevant information, cauliflower, amaranth, garlic, cabbage and other relative nitrogen needs more, beans, kidney beans, radish, long melon, cucumber, celery, Chinese cabbage and other relative phosphorus needs more, spinach, carrots, cowpeas, kidney beans, white, Lettuce, winter melon and other relative potassium needs more. Bulb vegetables such as onions, green onions, garlic, ginger, etc., the demand for sulfur is large, the cruciferous vegetables such as rapeseed have a large demand for boron, and the edible melon is thin (8)榷 舾 舾 舾 舾 ∮ ∮ ∮ ∮ ∮ ∮ ∮ ∮ 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 More fertilizers such as superphosphate.
3. Application of new fertilizers and fertilizer synergists
It is recommended to use slow release and controlled release fertilizers, and add nitrification inhibitors to nitrogen fertilizer to prevent leaching and volatilization loss of chemical fertilizers.
The microbial fertilizers allowed for the production of pollution-free agricultural products include rhizobial fertilizer, nitrogen-fixing bacterial fertilizer, phosphorus bacterial fertilizer, silicate bacterial fertilizer, and compound microbial fertilizer. Microbial fertilizer can expand and strengthen the activities of beneficial microbes in crop rhizomes and improve crop nutrient conditions. It is an auxiliary fertilizer and should be selected for quality products that the country allows. Humic acid fertilizers, etc., are also auxiliary fertilizers for the production of pollution-free vegetables, and should be selected according to the actual needs of production.
4. Pay attention to the time of fertilizer application.
Generally speaking, vegetables should not be used for 8 days before harvest, and fruit trees should not be used for 20 days before harvest. Grain crops should not be applied with nitrogen fertilizer and other foliar fertilizers 15 days before harvest to prevent excessive levels of nitrate and heavy metals in agricultural products.
It is recommended to apply human and animal waste, domestic garbage and commercial organic-inorganic compound fertilizer which are harmlessly treated by heap decomposing or biological high-temperature fermentation. Improve soil fertility by returning straw to the field and planting green manure.
2. Balance the application of large and medium trace element fertilizers, focusing on controlling the amount of nitrogen fertilizer
The essential elements of nitrogen, phosphorus and potassium and medium and trace elements necessary for crop growth cannot substitute each other. The lack of any nutrient element will affect the yield and quality of crops. According to the relevant information, cauliflower, amaranth, garlic, cabbage and other relative nitrogen needs more, beans, kidney beans, radish, long melon, cucumber, celery, Chinese cabbage and other relative phosphorus needs more, spinach, carrots, cowpeas, kidney beans, white, Lettuce, winter melon and other relative potassium needs more. Bulb vegetables such as onions, green onions, garlic, ginger, etc., the demand for sulfur is large, the cruciferous vegetables such as rapeseed have a large demand for boron, and the edible melon is thin (8)榷 舾 舾 舾 舾 ∮ ∮ ∮ ∮ ∮ ∮ ∮ ∮ 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 More fertilizers such as superphosphate.
3. Application of new fertilizers and fertilizer synergists
It is recommended to use slow release and controlled release fertilizers, and add nitrification inhibitors to nitrogen fertilizer to prevent leaching and volatilization loss of chemical fertilizers.
The microbial fertilizers allowed for the production of pollution-free agricultural products include rhizobial fertilizer, nitrogen-fixing bacterial fertilizer, phosphorus bacterial fertilizer, silicate bacterial fertilizer, and compound microbial fertilizer. Microbial fertilizer can expand and strengthen the activities of beneficial microbes in crop rhizomes and improve crop nutrient conditions. It is an auxiliary fertilizer and should be selected for quality products that the country allows. Humic acid fertilizers, etc., are also auxiliary fertilizers for the production of pollution-free vegetables, and should be selected according to the actual needs of production.
4. Pay attention to the time of fertilizer application.
Generally speaking, vegetables should not be used for 8 days before harvest, and fruit trees should not be used for 20 days before harvest. Grain crops should not be applied with nitrogen fertilizer and other foliar fertilizers 15 days before harvest to prevent excessive levels of nitrate and heavy metals in agricultural products.
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