Matters needing attention in the application of organic fertilizer

Attention should be paid to ensuring that the unripe organic fertilizer contains harmful substances such as pathogens and weed seeds after ripening, which may cause pest breeding, weed spread, crop seedling burning and other problems.

Pay attention to master the method of use

Organic fertilizer can be divided into solid organic fertilizer and liquid organic fertilizer. Generally, solid organic fertilizer is used as base fertilizer and liquid organic fertilizer is used as topdressing fertilizer. In the method of use, powdered organic fertilizer can be applied before tillage, granular organic fertilizer can be applied, and liquid organic fertilizer can be sprayed, irrigated or dripped at different stages of crop growth, combined with solid organic fertilizer to provide nutrients for crops.

Pay attention to the scientific determination of usage

The use rate of organic fertilizer should follow the principle of soil testing and formula fertilization, and formula fertilization should be carried out according to soil nutrient content, target yield and fertilizer nutrient content. in general, field crops apply 300 to 500 kg of solid organic fertilizer per mu, 500 to 1000 kg per mu for vegetables and fruit trees, and 1000 to 2000 kg per mu for organic fruit and vegetable crops. The use of liquid organic fertilizer is determined according to different crop types and different production stages, and generally increases with the seedling stage, stem and leaf growth stage and fruit growth period.