If the balcony is closed, it will be more difficult to plant, especially for high-rise balconies, where the glass is double-layered and ultraviolet rays are filtered out a lot, so the same vegetables grow well in the open air and not well on the closed balcony, so the first thing to pay attention to is to choose the vegetable varieties suitable for balcony planting.
According to our experience in planting vegetables on balconies in recent years, the varieties suitable for balconies, especially closed balconies, include lettuce, oil wheat, fennel, chicken feathers, Chinese cabbage, chrysanthemum, arugula, leeks, shallots, cherry radishes, spinach, peppers, Dutch melons, sprouts, and of course others, so I won't list them here.
What should I pay attention to when growing vegetables on the balcony? There is a big difference between planting vegetables on the balcony and planting vegetables in the open field. It is difficult to see rain when planting vegetables on the balcony, and the ventilation ability is poor, the illumination is not ideal, the cultivation soil is limited, the organic fertilizer is difficult to apply, and the space is limited, so it is not convenient to grow vegetables on the balcony. When planting good dishes on the balcony, we must pay attention to the following points:
First, the limitation of space, pay attention to the choice of varieties. Because the sunshine height does not exceed 3 meters, the place is narrow and the space is very limited. Planting vines should not be too much, which can not affect the planting of dwarf vegetables. Therefore, vine vegetables with larger area should be less and arranged reasonably. The varieties planted should be diversified as far as possible, and the layout should be reasonable considering the wind direction and sunshine.
Second, the preparation of soil. Planting vegetables on the balcony, without soil, depends entirely on manual handling. There are flowerpots, foam boxes, waste barrels, brick walls and so on in the soil. Soil preparation should be based on the common characteristics of most vegetables. We like neutral and acidic soils with good porosity and permeability, rich humus and good semi-sandy drainage. Soil preparation is to select 5 parts of high-quality cultivated soil, 2 parts of river sand, 2 parts of high-quality humus soil and high-quality organic fertilizer 1 part in the field, stir them evenly and plant them in a pot.
Third, pay attention to watering. Growing vegetables in the sun has largely lost natural rainfall and rain dew. Vegetables are basically watered manually, and water supply is the first priority whether it is sunny or rainy. No vegetables can grow well without water. When planting vegetables on the balcony, water should be filtered to avoid long-term water accumulation and diseases in the cultivated soil and keep the cultivated soil in a wet state for a long time. The principle of cultivating soil moisture should be dry but not dry, and wet without soaking. Especially in summer, the weather is hot and the water evaporation is large, so the seedlings should be watered almost every day. Vegetables grow on the balcony, water management is good, vegetables grow normally and vigorously.