Strawberry is a kind of herb that is cool and cool, and is not resistant to high temperature and drought. The suitable temperature for growth and development is 17 °C~26 °C, and the growth above 30 °C is blocked. If the summer is poorly managed, the plants will develop severe physiological disorders and even cause a large number of dead seedlings. Whether it is a strawberry garden that has been planted for many years, or a nursery that is planted every year, measures must be taken to prevent high temperature and drought and ensure safe and summer.
Irrigation and moisturizing, shading and cooling, the roots of the strawberry are shallow, the plants are small, but the leaf area is large, and it is not resistant to drought. If the soil is not wet, the soil will be wet and it will easily cause the stems and leaves to wither and die. Therefore, when the local surface is cracked, the plots with irrigation conditions should be irrigated at night, and the water should be irrigated after the seedlings are infiltrated. If there is no condition for irrigation, it should be splashed and drought-proof every morning and evening. The soil is moist and reduces the surface temperature. In addition, it is best to put a shade of 1 meter high on the strawberry compartment, cover some grass and other shades on the top, or plant some high-stalk crops around the car, such as beans, corn and other scaffolding. Vegetable crops, but should not be planted too densely to avoid poor ventilation and insufficient light, which affects the normal growth of strawberries.
Directional pressure vines, rooting and promoting the growth of summer and autumn after strawberry fruit picking, the stems will produce 3 to 5 seedlings one after another. In order to make each seedling grow into a strong seedling, it is necessary to timely and rationally arrange the stolons during the emergence of the seedlings, and arrange them evenly. Combined with the cultivating and weeding, the new plants will be slightly pressed with the soil to promote the new roots. If you do not need to breed new seedlings, you should remove them in time to avoid consuming nutrients from the mother plants and reducing the yield of strawberries in the next year.
Strengthening fertilizer management After strawberry picking, the main task is to strengthen the management of fertilizer and water, laying the foundation for flower bud differentiation. When fertilizing, the main application of nitrogen fertilizer, potassium fertilizer, combined with some calcium, magnesium, phosphate fertilizer, avoid the application of potassium chloride, strawberry is a chlorine-free crop. Generally, 5 kg of urea per acre, 7.5 kg of phosphate fertilizer, and 2.5 kg of potassium sulfate are applied, and the application is carried out with water, and the fertilization is generally applied once every 10 days. After fertilization, pay attention to watering to ensure that the fertilizer dissolves quickly and is absorbed by strawberry plants.
In the cultivating and cultivating soil, the occurrence of new roots of drained and smashed strawberry has the characteristics of increasing growth year by year. Therefore, the strawberry should be cultivated at the base after one year of growth, mainly after the fruit harvesting and before the occurrence of a large number of new roots. The thickness of the soil is suitable to expose the seedlings. The cultivating can be carried out together with topdressing and cultivating soil, and the cultivating can be appropriately deepened before the roots grow vigorously. The old leaves, diseased leaves, yellow leaves and dried stems of the nursery seedlings should be stripped in time and concentrated. Weeds in the seedbed should be removed, and the cultivating soil should keep the soil in the seedbed loose and breathable, creating a good environment for the growth of new roots. The nursery nursery of strawberry should plan the irrigation channel reasonably. When the strawberries are watered or there is accumulated water in the rain, they should be removed in time to prevent the dead water from being caused by the internal water.
The temperature of pests and diseases in the field is as high as 25 ° C ~ 30 ° C, strawberries, especially strawberry seedlings in nurseries, prone to black spot disease. At this time, black spots with a diameter of 5~8 mm are produced on the diseased leaves, and they are in the shape of a wheel. The center of the lesion is dark brown, with arachnoid mold layer. The yellow spot is often outside the lesion, and the petiole and the stolon are damaged. There are small brown spots on the brown. For prevention and treatment, 25% leaf spot emulsifiable concentrate 2000~3000 times solution or 40% fluorosilicone emulsifiable concentrate 8000 times solution can be used for mixed spraying. During the summer and autumn growth of strawberries, the most harmful pests to strawberries are underground pests such as cockroaches. Adult cockroaches often lay eggs on unfertilized fertilizer piles. Therefore, rational application of fully decomposed organic fertilizers can effectively reduce the occurrence of pests and diseases. The nursery can be used to control the nursery with 800 times of trichlorfon or 1000 times of dichlorvos. It can also be combined with field operations for artificial killing.
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