What are the problems that most easily occur with the latest greenhouse strawberries?

Through greenhouses and conservatories, strawberries can be cultivated even in winter in a timely manner, and this has now become an important way for farmers in various regions to generate income and become wealthy. Some achieve considerable returns, but others, for various reasons, have low yields or poor quality. The main reason is that several problems are extremely prone to occur during the cultivation process, seriously affecting economic returns. Let's take a look below.

1. Only flower buds, no blooming

Many farmers report that the strawberries they grow have thick rhizomes, dark green leaves, and normal leaf growth, but they only form flower buds and do not bloom, and the reason is puzzling. There are many reasons why strawberries only form flower buds but do not bloom. First, excessive application of nitrogen fertilizer during fertilization causes excessive vegetative growth of the plant, which is not conducive to flower bud differentiation. Some farmers also apply large amounts of plant growth hormones to regulate flower bud formation, using gibberellin and auxin, which is also not conducive to flower bud differentiation. Temperature and light are also important factors affecting the formation of strawberry flower bud differentiation. If temperature and light are not properly regulated, flower bud formation will be hindered. In addition, excessive watering of strawberries, when fertilizer is sufficient, leads to leggy growth, causing too many leaves or insufficient leaves, which can also delay flower bud differentiation.

Solution: In response to the above reasons for only forming flower buds and not blooming, during cultivation it is necessary to fertilize reasonably. On the basis of controlling nitrogen fertilizer, increase the application of phosphorus and potassium fertilizer. Routinely remove leaves, especially old leaves, to reduce nutrient consumption, increase nutrient accumulation, and promote flower bud differentiation.

2. Poor coloring

Many fruit growers find that when entering the harvest period, the fruit colors unevenly, appearing pink, or the areas between fruits are still green. Although this does not affect taste or flavor, it seriously affects market appearance and prevents selling at a high price. The main reason for poor coloring of strawberries is low temperature and poor light, which affect the formation and expression of endogenous hormones in the fruit, affect chlorophyll degradation and anthocyanin formation, and thus cause poor coloring. Strawberries need to be kept at 10-25 degrees to color normally, with 20-25 degrees being optimal, giving good coloring results and fast coloring. If continuous low temperature occurs, or the temperature is too high and light is too strong, anthocyanin formation will be slow, resulting in poor coloring.

Solution: Therefore, when cultivating strawberries, it is necessary to control the temperature and light conditions in the greenhouse well. During the fruit expansion period, control the daytime temperature at 20-25 degrees, and at night it must not be lower than 5 degrees. When the nighttime temperature is too low, add straw curtains. During the growing period, spraying brassinolide can promote rooting, improve cold resistance, and promote coloring.

3. Harm from powdery mildew

Strawberries are extremely susceptible to powdery mildew in low-temperature and high-humidity environments. From the seedling stage to the mature stage, the leaves, flowers, and fruits of strawberries can be repeatedly infected, causing premature aging of the plant and reduced fruiting. After infection, growth stops, fruit rot occurs easily, and the quality, yield, and storage tolerance of the fruit are seriously affected.

Solution: To prevent and control powdery mildew well, start from the seedling stage when making beds. First, cultivate strong seedlings, transplant at the right time, and plant at a reasonable density. The base fertilizer should mainly be decomposed farmyard manure and phosphorus and potassium fertilizer. During the growing period, apply an appropriate amount of nitrogen-phosphorus-potassium compound fertilizer as a top dressing, and do not apply nitrogen fertilizer alone. After flower bud formation, pay attention to water management. Drip irrigation under plastic film is recommended; do not use flood irrigation. Apply medicine promptly at the early stage of disease onset. Chlorothalonil can be sprayed, once every 7-10 days, for 2-3 consecutive times. Each spray should be even, and both the front and back sides of the leaves should be sprayed.

  The above is an introduction to the three problems that are extremely prone to occur in greenhouse strawberries. We hope it can help you. If you want to learn more related knowledge, please follow us.