Strawberries are important economic crops. The cultivated area in our country has gradually increased, and the greenhouse strawberry accounts for 2/3. Continuous cropping of greenhouses can lead to soil salinization and salinization. Therefore, in order to fundamentally change the phenomenon of strawberry cultivation in greenhouses, in accordance with the growth characteristics of strawberries and fertilization needs, the greenhouse strawberry is provided with system fertilization technology, thereby promoting the high yield of greenhouse strawberry.
Fertilization before transplanting In August, the film was opened and the land was deeply turned. 15 kg of diammonium phosphate and 10 kg of potassium sulfate were applied during the process of turning the land. Since strawberries grow vigorously in the early stages of growth and reproductive growth is slow, rational allocation of nitrogen and phosphorus inputs is very important. Finally, the soil should be finely chopped and prepared for ridge cultivation.
After fertilization management after transplanting, one week after the survival of the strawberry, spray various fertilizers such as potassium nitrate, potassium dihydrogen phosphate, magnesium sulfate, and zinc sulfate. Wait until the beginning of October, to apply urea and potassium dihydrogen phosphate to it, depending on the growth of the strawberry, and adopt a small amount of multiple methods.
At the beginning of November, the gibberellin was sprayed during sunny days and high temperatures, effectively breaking the strawberry's sleeping period and promoting flowering. When waiting for the emergence of flower buds, it is necessary to timely spray boric acid and other trace elements, and according to the growth of strawberries, reasonable fertilization, reduce the probability of occurrence of malformed fruit. In the two weeks before picking, three times of the stevia-containing foliar fertilizer was applied. The main effect of stevioside was to increase the sugar content of the berry and regulate the sweet-acid ratio of the strawberry.
During the whole process of growth, strawberry is sprayed with liquid silicon fertilizer to promote the growth of plant and fruit cell walls, increase the thickness of the leaves, and increase the firmness of the berries, which plays an important role in guaranteeing the transportation and preservation of the fruits after harvest.
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