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What are the key management points for field roses after a flood?
1. Pests and diseases are unlikely to occur, especially downy mildew, the most lethal disease in the growth of cut roses. The reason: the key point of the tall-stem rose cultivation technique is that the nutrient branches are placed on the two sides of the ridge respectively, and the rose stems are about 50 cm above the ridge surface. There are no leaves below the stems, so ventilation and air permeability are very good, which is unfavorable for the growth of pests and diseases and can effectively...