What methods are there to improve fertilizer use efficiency?
1. Fertilizer application rate. The application rate of compound fertilizer is based on the amount of nitrogen. Compound fertilizers contain multiple nutrients and mostly belong to the nitrogen, phosphorus and potassium three-element type. Except for special fertilizers for legume crops, which are mainly phosphorus and potassium fertilizers, all take nitrogen as the main nutrient, and in the nutrient ratio nitrogen is always dominant, matched with corresponding phosphorus and potassium nutrients. For one...
(1) Master techniques such as balanced fertilization and formula fertilization to improve the level of scientific fertilization.(2) Attach importance to soil testing work and gradually establish a soil index system for fertilization. Promote soil-testing formula fertilization technology, carry out targeted fertilization according to the soil characteristics of each area, and achieve the effects of "enough fertilizer without waste" and "supplementing whatever is deficient."
(3) Promote the use of potassium fertilizer to boost the absorption of nitrogen, phosphorus and other nutrients by crops and improve crop yield and quality.
(4) Promote straw return-to-field technology and increase the application of organic fertilizer, which helps raise soil organic matter.
(5) Implement crop rotation and intercropping to improve fertilization results.