The fog weather often occurs in winter. In this weather, the sunlight in the greenhouse is less than 1/5 of that in sunny days, the relative humidity in the air is above 95%, and the indoor temperature is below 15°C. Such bad weather not only limits the photosynthesis of strawberry leaves, reduces photosynthetic products, and delays ripening of strawberries. For example, a few days of foggy days during the flowering period of strawberries will greatly reduce the fruit setting rate of strawberries and cause malformed fruit, leading to a decline in yield. Poor quality.
Management measures: First, increase artificial auxiliary lighting. An incandescent lamp can be used as a light source for heat treatment. Each 100 watt lamp is about 7.5 square meters. Every day from 5 to 10 pm, it is heated for 5 to 6 hours. Strawberry can increase production by 30% to 50%, and deformed fruit can be reduced by 50%. The second is a reasonable temperature control. Temporary heating equipment is installed, heating is generally performed at night, and ventilation is performed for short periods of time before and after noon. The daytime temperature in the control booth is about 20°C and the nighttime temperature is above 10°C. The third is auxiliary pollination. During the strawberry flowering period, the stocking bees assist in pollination, and pollination by the bees can increase the fruit setting rate by 50% to 70%.
30% apple Polyphenols Apple Extract is a kind of Apple Extract, is our company's Fruit&Vegetable Power with apple fruit as raw material, after extraction, concentration, drying and become white or light yellow powder.
Apple are native to central and southeastern europe, central and western asia, and xinjiang in china.later, the romans began cultivation and grafting.in the 18th century, j.b. Montessori and t.a. Used natural hybridization to select and breed seedlings and gradually promoted cultivation.
Apples are native to central and southeastern Europe, Central and western Asia, and Xinjiang in China.In Europe, m. P.Cato recorded varieties of apple in 300 BC.Later, the Romans began cultivation and grafting.In the 18th century, J.B. Montessori and T.A. used natural hybridization to select and breed seedlings and gradually promoted cultivation.After the discovery of the New World, European immigrants brought apples to America, where many new varieties were bred.Japan introduced apples from Europe and America during the Meiji Restoration.Since then, Oceania, Africa have also been introduced into the apple.Over the past hundred years, the world's five continents have apple cultivation.The earliest Europeans had eaten, improved and bred apples, some of which were seen more than 2,000 years ago, and hundreds of varieties were known in Europe before the colonization of the Americas.With the wave of immigrants to North America, seedling apple varieties spread everywhere, becoming itinerant ambassadors for local legends who played a major role in the spread of the apple
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