The top-dressing fertilizer was applied from the end of September to the beginning of October to the top of the leaves of Toona sinensis by spraying 0.1% potassium dihydrogen phosphate solution or spraying the fertilizer on the leaves to increase the content of the seeds. Timely Harvest When the fruit is 90% yellow, full grain, bright appearance, and strong flavor, it is timely harvested. The method of harvesting is inconsistent with the maturity of the fruit on the tree. The fruit on the top of the sun should be harvested first, and the middle part of the fruit should be harvested according to the color of the fruit to ensure that the quality of the entire batch of seeds is consistent. To minimize damaged branches when harvesting, it is best to use a long rod with a hook at the top to pick it. Store the harvested fruit and immediately spread it to dry it so that it bursts. The separated seeds are air-dried to a moisture content of less than 12%, and they are graded into sacks or sacks (disabled plastic bags with poor air permeability) and marked. Place in a dry, ventilated, rodent-free place (preferably cold storage to extend the storage period). According to the weather conditions, conduct ventilation, if necessary, dry and dry.