1. Film covering time: After strawberries are planted in the fall, they are usually covered with plastic film during two key periods—before winter and during early spring budding. In colder regions, it is more beneficial to cover them before winter sets in. The ideal time is when the daily average temperature drops to around 3-5°C. Covering too early may cause regrowth of the plants, while covering too late could lead to freezing damage. In Liaoning and Jilin provinces, this is generally done at the end of October. In Central Hebei, it's around late November, and in Central Henan, it's typically late December. In warmer areas, the timing can be adjusted accordingly, allowing for a later coverage. 2. Film covering method: Before applying the film, it’s recommended to apply some nitrogen, phosphorus, and potassium compound fertilizer. Also, remove any dead branches and rotting leaves to promote healthy growth. Choose a windless day for the process. Lay the film over the strawberry plants carefully, ensuring that the surface is smooth without wrinkles. Secure the edges properly to prevent lifting. If the rows are long, you can press the film laterally at certain intervals to keep it in place and prevent it from being blown away by the wind. In colder areas, adding a layer of straw or wheat on top can help retain heat and protect the film from extreme cold. 3. Film breaking and removal: Once the soil thaws in spring, start by removing the protective material on top of the film. Clean the film surface so that the ground temperature rises, encouraging earlier sprouting of the strawberries. The best time to break the film is just as the buds begin to appear. To do this, make a small hole directly above each plant and gently lift the seedling through the opening. Be careful not to damage the leaves or stems as they pass through the hole. Afterward, compact the soil around the hole to secure the film and improve its effectiveness. It’s important not to delay the process too long. If the temperature under the film exceeds 30°C, it can burn new leaves and cause old leaves to dry out, reducing their ability to perform photosynthesis. 4. Removing old film: After the fruit harvest, it's crucial to remove the used plastic film promptly. This is because old film is difficult to decompose and can pollute the soil, affecting the health of future crops. Proper disposal helps maintain a clean and sustainable growing environment for the next planting season. Anti Inflammatory Cosmetic Ingredients Anti Inflammatory Cosmetic Ingredients,Gotu Kola Extract,Centella Asiatica Extract,Gotu Kola Extract Powder Youth Biotech CO,. Ltd. , https://www.youtherb.com
Plastic film covering technology