There are many reasons for the yellowing of the branches on the crown of Mahuiju, such as insufficient fertilization, too dry soil, difficult for plants to absorb normally, pests and diseases, etc. It is suggested that after autumn shoots are released, foliar fertilizer should be added to protect leaves and branches on the basis of sterilization and pesticides, so as to observe the effect and take other investigation measures. Brassinolide, potassium dihydrogen phosphate and foliar fertilizer can be sprayed on the crown for many times.

It should be due to the unreasonable fertilization structure and insufficient fertilization amount in August and September, which led to the phenomenon of fruit shoots competing for fertilizer after autumn shoots were released, and the autumn shoots turned yellow and failed to turn dark green. For the fertilizer used to strengthen fruit and promote shoot, it is necessary to combine the quick-acting chemical fertilizer with the fully decomposed organic fertilizer, use the quick-acting chemical fertilizer to promote premature germination of autumn shoots, and use the organic fertilizer to support fruit expansion and autumn shoot growth for a long time.

At present, the weather is getting colder and colder, even if organic fertilizer is added, it is difficult for plants to absorb and utilize it. It is suggested to spray high-quality foliar fertilizer on the crown several times to delay plant aging and increase plant nutrients.