The problems of strawberries in greenhouse

Through greenhouses and greenhouses, strawberries can be cultivated in winter in time, which has now become an important way for local farmers to generate income and become rich. Some have achieved considerable benefits, but some have low yield or poor quality due to a variety of reasons. The main reason is that there are several problems in the process of cultivation, which seriously affect the economic benefits. Let's take a look at it.

1. Only budding but not blooming

Many farmers report that the strawberries planted by themselves have strong roots, dark green leaves and normal growing leaves, but they only show buds but do not blossom, and the reason is puzzling. There are many reasons for strawberry budding but not flowering. First of all, too much nitrogen fertilizer is applied in the process of fertilization, resulting in excessive vegetative growth of the plant, which is not conducive to flower bud differentiation. Some farmers use a large amount of plant growth hormone to regulate flower bud formation, gibberellin and auxin, which is not conducive to flower bud differentiation. Temperature and light are also important factors affecting the flower bud differentiation of strawberry. If the temperature and light are not adjusted properly, the flower bud formation will be blocked. In addition, strawberry overwatered, in the case of sufficient fertilizer, the emergence of overgrowth, resulting in too many leaves or insufficient leaves, will also delay flower bud differentiation.

Solution: in view of the above reasons why buds do not bloom, reasonable fertilization must be achieved in the process of cultivation, and then increase the application of phosphorus and potassium fertilizer on the basis of controlling nitrogen fertilizer. Usually pick the leaves, especially the old leaves, reduce the nutrition consumption, increase the nutrient accumulation and promote the flower bud differentiation.

2. Poor coloring

Many fruit growers enter the harvest period, the fruit coloring is uneven, the fruit is pink, or the fruit is still green, although it will not affect the taste and flavor, but seriously affect the sales phase, can not be sold at a high price. The main reason for poor coloring of strawberry is low temperature and poor light, which will affect the formation and function of endogenous hormones in fruit, chlorophyll degradation and anthocyanin formation, resulting in poor coloring. Strawberries need to be kept at 10-25 degrees in order to color normally, among which 20-25 degrees is the best, with good coloring effect and fast coloring speed. If there is continuous low temperature or too high temperature or too strong light, it will lead to slow anthocyanin formation and poor coloring.

Solution: so in strawberry cultivation, it is necessary to control the temperature and light conditions in the greenhouse, during the fruit expansion period, the temperature should be controlled at 20-25 degrees during the day, not less than 5 degrees at night, and the grass curtain should be covered if the temperature is too low at night. Can spray brassin in the growing period, can promote rooting, through frost resistance, promote the effect of coloring.

3. Powdery mildew harm

Strawberry is easily infected with powdery mildew in the environment of low temperature and high humidity. from seedling stage to mature stage, the leaves, flowers and fruits of strawberry can be infected repeatedly, resulting in premature senescence and decline of fruit. The fruit will stop growing after being infected with the disease, and the fruit will rot easily, which will seriously affect the quality, yield and storability of the fruit.

Solution: in order to control powdery mildew, it is necessary to make beds at the seedling stage, first cultivate strong seedlings, timely transplant, reasonably close planting, base fertilizer mainly rotten farm manure and phosphorus and potassium fertilizer, and apply appropriate amount of nitrogen, phosphorus and potassium compound fertilizer during the growing period. Pay attention to water management after budding, recommend drip irrigation under plastic film, not flood irrigation, timely use of medicine at the initial stage of the disease, can be sprayed with chlorothalonil, every 7-10 days, 2-3 times in a row, each spray should be uniform, both the front and back of the leaves should be sprayed.

The above is the greenhouse strawberry extremely easy to occur three problems, hope to help you, want to know more related knowledge, please follow us.