Management Technology of Strawberry in Middle and Late Stage

After the Spring Festival, the first stubble of strawberries in the greenhouse has been harvested, and strawberry production has entered the middle and later stage. In the management, in addition to strengthening the prevention and control of diseases and insect pests and controlling the temperature and humidity, the most important thing is to do a good job of fertilization and watering in the later stage. The following are the problems and suggestions that are easy to occur in production.

Uneven irrigation

The reason is that in order to save water and reduce the humidity of the greenhouse, some farmers use drip irrigation. When irrigating, this method will not make the greenhouse temperature drop too fast, reduce the occurrence of strawberry diseases, and thus increase the yield of strawberries. However, due to the reason of water quality, some drip ports are often blocked in the later stage, resulting in uneven irrigation and affecting the flowering and fruiting expansion of strawberries.

Management measures according to the practical experience in recent years, it is a more reasonable method to change drip irrigation to flood irrigation under plastic film in the later stage of irrigation. The specific operation method of under-film irrigation is to uncover the film between the two beds, put the sprinkler directly into the furrow under the film, and pour the water thoroughly. This method of irrigation allows water to be directed upward from the root of strawberries, reducing soil consolidation caused by irrigation, and irrigation under plastic film can also relatively reduce the number of irrigation, saving both labor and effort. Generally, clayey soil can be watered and fertilized once every 15-20 days, and sandy soil once every 10-15 days.

Strawberry fattening

After entering the second fruit, some strawberries are de-fertilized. If the nutrient supply is not strengthened, it is easy to affect the yield and quality of the second stubble fruit. Moreover, the flowering stage is not suitable for foliar fertilization, which increases the difficulty of fertilization.

Management measures with irrigation increased application of strawberry pioneer, spray Shibao, potassium dihydrogen phosphate and other high-efficiency strawberry special trace element fertilizer, increase the content of soil organic matter, supplement the missing manganese, molybdenum, zinc, calcium and other trace elements, increase the supplement of efficient phosphorus and potassium fertilizer. The application method is to apply the diluted efficient fertilizer evenly with the water during irrigation, generally applying 25 kg of special fertilizer per mu of land.

Serious insect pests

With the increase of temperature, aphids and other pests increased relatively, which seriously affected the quality of strawberries.

Management measures should be taken to prevent in advance. Hanging an armyworm board every 2 meters in the shed can reduce the occurrence of aphids. Plots that have been damaged can be fumigated with aerosol after picking strawberries to kill pests. During the specific operation, we should pay attention to move the pollination bees outside the shed first, so as not to hurt the bees. It is necessary to seal all the ventilated places, order the gas fog fumigant in the evening, and ventilate in the morning the next day.