Who will talk about how to fertilize Chinese rose?

The fertilization of roses is mainly topdressing in the growth period, and the principle of thin fertilizer and diligent application should be mastered. The thin one is 7 parts water and 3 parts fertilizer, and it is applied once a week. Under no circumstances can undiluted fertilizer be directly poured into the basin. Generally, in March, before the Chinese rose begins to sprout and spread its leaves, it can be topdressing with dilute liquid to make the branches thick and leafy. April-June and 9- 10 are the vigorous growth periods of Chinese rose, so fertilization should be done once a week. In addition to applying cake fertilizer and water, phosphorus and potassium fertilizer should also be applied from flower bud differentiation to bud pregnancy, such as spraying 0.2% potassium dihydrogen phosphate on leaves and topdressing outside roots. Rose is afraid of heat, and the high temperature period (temperature above 30℃) in July and August is close to semi-dormancy, so topdressing or less fertilization is not suitable. Fertilization should be stopped at the end of autumn to avoid promoting autumn shoots and freezing in winter. In addition, during the whole growth period of Chinese rose, whether it is budding or defoliation, attention should be paid to the inadvisability of fertilization.