怎样给果树追肥答陕西读者李新立追肥又叫补肥，即在施基肥的基础上，根据果树各物侯期的需肥特点补给肥料，保证当年丰产的需要和为明年的丰产奠定基础。追肥以速效性的化肥为主，果园常用的化肥有硫酸铵、硝酸铵、尿素、过磷酸钙、磷酸二铵、硫酸钾、复合肥等。追肥的时... How to give top-dressing to fruit trees? Li Xinli, a Shaanxi Readership, is also known as top-dressing fertilizer. On the basis of basal fertilizer, fertilizer is supplied according to the needs of each tree during the post-harvest period to ensure the high-yielding needs of the year and lay the foundation for next year’s high yield. Quick-dressing top-dressing fertilizer, orchard commonly used fertilizers are ammonium sulfate, ammonium nitrate, urea, superphosphate, diammonium phosphate, potassium sulfate, such as fertilizer. Top dressing time ...