Cultivation of strawberries
According to the short production cycle of strawberry, the plants are short and can be controlled artificially during growth and development, and can be cultivated by means of mulching, construction of sheds, plastic greenhouses, and solar greenhouses. On the basis of increasing the yield, the economic benefits can be greatly increased. First, select varieties with high fertility for the main cultivars and pollen varieties rich in pollen, good affinity, close to the main flowering varieties of flowering varieties. And update the seedlings of degraded varieties in time. The best selection of non-toxic seedlings. Second, the cultivation of flower buds of strong seedlings is sufficient, a direct impact on greenhouse yield and quality of strawberries. On the production site, 15 days before planting, measures such as cutting off roots, shading, controlling nitrogen, and removing old leaves were adopted to promote flower bud differentiation. Third, the cover film uses plastic silver gray film, transparent film, black film covering the film, and the black film is the best, can reduce the fruit surface pollution. The black film should be 0.3 mm thick. Wide and narrow line spacing, laying between rows, can be carried out when the inflorescence is significant. Before the shop is spread, one cultivator cultivating soil is used first. Fertilizer can be fertilized if there is not enough fertilizer. The membrane should be close to the ground and the strawberry roots should be tightly cushioned. 4. Flowering bee Although strawberry is a flower of both sexes during flowering period, when the strawberry blooms in greenhouse, it is during the winter season. The temperature inside the greenhouse is low, humidity is high, and insects are few. It is very easy to cause pollen to be scattered, resulting in poor pollination and malformed fruit. Therefore, it is best to put bees in the shed, 5000 per standard shed. Bee pollination time usually starts at 8-9 am and ends at 3-4 pm. The bees in the shed should pay attention to two points: 1 As the first batch of strawberries blooms, the flowering number gradually decreases, and the bees are undernourished, and sugar should be added. 2 If spraying insecticide, the day box must be moved out of the nest. Fifth, the temperature and humidity control of strawberry flowering fruit set period, should always ventilate and drain, cooling. The daytime temperature is generally kept at 22-25°C, and it is maintained at 8°C or more at night, and the relative humidity is controlled at 50%. Use a drop-free membrane to prevent the top of the roof from dripping off the stigma. Six, fertilization and watering To promote the growth and development of strawberries, must be added fertilizer. In the case of applying basal fertilizer, fast-acting fertilizers (diammonium phosphate and multi-element fertilizers, etc.) must be chased. During the flowering and fruit expansion period, 10-15 kilograms of compound fertilizer is applied per acre, which can be applied together with watering. Perforations can also be made on the mulch and the fertilizer can be dissolved in water. Where conditions permit watering, it is best to use drip irrigation to ensure that the soil is moist. VII. After the results of the inflorescence of the sparse fruit and the fruit, the teratogenic fruit can be distinguished. At this point, all malformations should be removed. When there is a lot of fruit set, some of the small fruit can be removed. If the plant grows vigorously, the leaf area is large, and the flowering number is large, especially if the flowers on the third and fourth branching inflorescences are long, as most of them cannot mature, they should be removed as much as possible.