Detailed Explanation of Greenhouse Strawberry Cultivation Techniques and Management Points
Growing strawberries in a greenhouse requires close attention to the temperature inside the greenhouse, timely covering with plastic film, and timely ventilation management. Arrange watering and fertilizing according to the growth and clearing of the strawberries to prevent the occurrence of early buds and early flowers. Field management focuses on preventing deformed fruit and pests and diseases, and harvesting can be done only at the appropriate time.
Greenhouse Strawberry Cultivation Techniques and Management
1. Preventing Early Buds and Early Flowers
To avoid early buds and early flowers in strawberries, the following points should be achieved during propagation: First, choose suitable varieties. For greenhouse cultivation, varieties with relatively shallow dormancy should be selected. If varieties with relatively strong dormancy are chosen, insulation protection should not be too early. Second, during the seedling raising process, fertilize reasonably, strengthen management, and cultivate strong seedlings. Through measures such as removing old leaves, removing flower clusters, straightening runners, and spraying gibberellin, strengthen the management of the mother plants and produce high-quality strong seedlings.
2. Strengthening Fertilizer and Water Management
Greenhouse strawberries have a long fruiting period, so on the basis of heavy application of base fertilizer, reasonable topdressing is needed to meet their nutritional requirements. Topdressing adopts the principle of “large amount, many times”. From covering the greenhouse to bud emergence, shallow watering and fertilizing can be done once about every 10 days, applying 10 kg of urea, 5-8 kg each of superphosphate and potassium chloride per mu each time.
3. Preventing Deformed Fruit
Interplanting some varieties with a large amount of pollen among the main cultivated varieties is an effective method to prevent deformed fruit in greenhouse strawberries. The local main cultivated variety is Baojiao Zaosheng, and the pollinating varieties are Chunxiang, Fengxiang, etc., generally interplanted at 5%-10%. Pesticides cannot be sprayed during the strawberry flowering period, to avoid reducing pollen germination rate, affecting fertilization, and producing deformed fruit.
4. Preventing and Controlling Pests and Diseases
For insect pests, before planting, 25% phoxim can be mixed with water or fine soil and scattered in the soil, or trichlorfon powder can be scattered in the soil for control. For diseases, after mulching with film, promptly spray 40% thiophanate-methyl 300-400 times liquid or 240 times Bordeaux mixture.