2. Top dressing. After the strawberry begins to grow, some fertilizers need to be applied before the flowering period, which is beneficial to the strawberry growth. Generally, urea 9- 10 kg, potassium sulfate 4-6 kg, urea 1 1- 13 kg and potassium sulfate 7-8 kg are applied during berry expansion. After a large number of fruits are produced, topdressing can be carried out according to the specific situation.
3, foliar fertilizer. Strawberry leaves should be sprayed with foliar fertilizer before and after flowering, and humic acid organic and inorganic liquid fertilizer can be sprayed generally, which can improve fruit setting rate, fruit quality and single fruit weight. Spraying 0.2% calcium sulfate and 0.05% manganese sulfate at the initial and full flowering stages can improve strawberry yield and fruit storage performance.