Strawberry growth in spring may affect yield

In the spring, the weather becomes warmer, the air humidity increases, and human factors such as fertilization can easily cause strawberries to flourish and affect the yield.

1. Reasons for prosperous growth

1. Water too often. Strawberries absorb too much water, their nutritional growth is greatly enhanced, and they begin to grow vigorously, consuming photosynthetic nutrients and mineral nutrients, and the nutrients allocated to the fruit, root system, and flower buds will be relatively reduced. It is difficult for the fruit to grow and flower buds. The formation and root growth are inhibited, and the flowering branches will also elongate in the later stage.

2. Too much nitrogen fertilizer. If you use too much nitrogen fertilizer, the increase in nitrogen will cause excessive growth, green color, soft plants, easy to be damaged by humans, and further cause *** disease. The stalk is thin and the petiole becomes thinner, which makes it easy to fall down; too many leaves will make the ventilation and light transmission worse, and it is easy to make the middle and lower leaves aging prematurely.

3. The temperature is higher. The optimum temperature during the day is 23～25℃, and the night is 8～10℃. This is not only good for flowering, but also good for pollination and fertilization. Temperature starts to rise in spring, plant growth speeds up, combined with sufficient fertilizer and water, just like the high temperature in summer, strawberry seedlings grow fast, causing excessive growth.

4. Unreasonable use of growth regulators. Excessive gibberellin dosage will make plants grow extraordinarily long, with long petioles, especially inflorescences.

Two, the solution

1. The most fundamental reason for prosperous growth is excessive fertilizer and water. A large amount of basal fertilizer has been applied before planting. If the water is not controlled at this time, the plant will absorb a large amount of nitrogen, and the result must be prosperous. So the simplest and most direct method is to control water content and reduce available nitrogen fertilizers.

2. Increase ventilation to reduce the temperature in the shed. At this stage, it is necessary to increase the ventilation opening in sunny days to effectively reduce the temperature in the shed, especially the night temperature. Control the temperature within a reasonable range. If the night temperature is too high, you can leave the air vents off.

3. While carrying out chemical control, low-concentration potassium dihydrogen phosphate can be added to increase leaf thickness. Do not spray potassium dihydrogen phosphate on leaves during blooming season. Phosphorus and potassium fertilizer can be applied appropriately, and the multiple is controlled at 300-500 times. So as to control the growth of stems and leaves.

4. The large amount of lateral buds should be removed in time to avoid excessive lateral buds wasting nutrients. Generally, 1-2 lateral buds per plant are enough. The ripe strawberries on the plant should be removed in time to avoid affecting the subsequent strawberry growth.

If the plant is too dense, the old leaves, diseased leaves and too dense overlapping leaves should be cut off in time to create a ventilated and light environment for the strawberry plant to facilitate its growth and avoid the occurrence of aphids and other hazards. When the leaves are too dense, it is not easy to control .

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