Fat before flowering. In the early spring, after the start of the growth of the strawberry to flowering (about the middle of March or so) to meet the flowering needs of various nutrients. Apply 10 kg of urea and 25 kg of phosphate fertilizer per acre, fertilize and then cultivator, irrigation.
After fruit fat. After a large number of strawberry fruits, the plant nutrient deficiency, in order to restore plant growth as soon as possible, the formation of new leaves and new roots, to create conditions for the autumn flower bud differentiation, this fertilizer should be appropriately increased potassium. Per acre can apply urea and ammonium sulfate 10 ~ 15 kg, 15 ~ 20 kg of phosphate fertilizer, potassium chloride 7.5 ~ 10 kg.
Pregnancy This time it was carried out before the differentiation of strawberry flower buds, which played a role in guaranteeing the normal growth and flower bud differentiation of strawberry plants. The main application of phosphorus and potassium fertilizer, with a small amount of nitrogen fertilizer.
In addition, strawberries can be top-dressed (ie, foliar spray). According to the growing situation of strawberries, fertilizers such as urea, potassium dihydrogen phosphate, zinc sulfate, ferrous sulfate, borax, and magnesium sulfate can be used to apply nitrogen, phosphorus, potassium, and some trace elements to foliar fertilizers from the bud to the end of flowering. , Generally 2 to 3 times, spraying fertilizer time should be selected in the cloudy evening or sunny evening, because the large amount of evaporation at noon on the hot, strawberry can easily cause fertilizer damage. The results showed that spraying 0.3% urea solution during flower bud differentiation and flowering and fruit setting can increase the yield by 10% to 20%.
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