Answer: Xu Fuli, a consultant from the old Yangling Association for Science and Technology and a researcher at Northwest A&F University, said: First of all, precautions for applying chemical fertilizers: apply deep into the soil, and urea should not be watered immediately after use; ammonium bicarbonate should not be applied in greenhouses and greenhouses; Do not mix nitrogenous fertilizers with alkaline fertilizers; do not apply nitrate-nitrogen fertilizers in paddy fields; phosphate fertilizers should not be applied dispersedly; potassium fertilizers should not be applied in the late crop period; chlorinated fertilizers should not be used on chlorine-free crops; nitrogen-containing compound fertilizers should not be used in large quantities Used in legume crops. Precautions for applying farmyard manure: organic fertilizer should be used after it is completely decomposed; compost should be combined with spring and autumn tillage as base fertilizer; sheep manure is a thermal fertilizer, which is more suitable for mixed application with pig manure, suitable for cool soil And shady slope land; pig manure contains more organic matter and nitrogen, phosphorus, and potassium. The decomposed pig manure can be applied to various soils, especially suitable for hot and humid soil with good drainage; cow manure has low nutrient content and is a typical cooling fertilizer , Applied to sandy soil and sunny slopes; human manure: it can be used directly after fermentation and decomposing, or it can be mixed with soil to make top dressing; poultry fertilizer has high nutrient content and can be used as seed fertilizer and top dressing, and is most suitable for vegetables. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for handling. phone Alarm Burglary Safe,Office Security Burglary Safes,Burglary Safety Box,Burglary Treasury Safes Hebei Yingbo Safe Boxes Co.,Ltd , https://www.yingbosafes.com