Management method of strawberry in middle and later stage of sustainable fruit nutrition consumption in large greenhouse

At present, strawberry production in greenhouse has entered the middle and later stage. In terms of 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. Therefore, the following problems should be paid attention to and corresponding measures should be taken in production.

Strawberry

1. Irrigating is uneven. In order to save water and reduce greenhouse humidity, some farmers use drip irrigation, which will not make the greenhouse temperature drop too fast and reduce the occurrence of strawberry diseases, so as to increase strawberry yield. However, due to the reason of water quality, in the later stage, part of the drip was blocked, resulting in uneven irrigation and affecting the blooming and fruiting of strawberries.

Management measures: according to practical experience, drip irrigation was changed to flood irrigation under plastic film in later irrigation. The specific operation method of under-film irrigation: uncover the film between the two beds, put the sprinkler in the ditch under the film, pour water, and pour it thoroughly. This method of irrigation can guide water upward from the root of strawberries, reduce the soil consolidation caused by irrigation, and relatively speaking, irrigation under plastic film can also reduce the number of irrigation, which saves both labor and effort. Generally, the clay soil is watered and fertilized every 15-20 days, and the sandy soil is watered once every 10-15 days.

two。 After entering the second result, some strawberries were fattened. At this time, if we do not strengthen the nutrient supply, it is easy to affect the yield and quality of the second stubble fruit, and the flowering stage is not suitable for foliar fertilization, which increases the difficulty of fertilization.

Management measures: with watering, special trace element fertilizers such as strawberry pioneer, spurious treasure and potassium dihydrogen phosphate were applied to increase the content of soil organic matter, supplement the missing trace elements such as manganese, molybdenum, zinc and calcium, and increase the supply of high-efficiency phosphorus and potassium fertilizer. Application method: the diluted high-efficiency fertilizer is applied evenly with water during irrigation, and the general mu is 25 kg of special fertilizer.

3. Diseases and insect pests are more serious. With the increase of temperature, powdery mildew, gray mold, aphids and other diseases and pests aggravated, seriously affecting the quality and yield of strawberries.

Management measures: prevent in advance, hang an armyworm board every 2 meters in the shed, which can reduce the occurrence of aphids. The diseased plots can be fumigated with aerosol after picking strawberries. During the specific operation, the bees used for pollination should be moved outside the shed to avoid harming the bees. It is necessary to seal all the ventilation places, ignite the aerosol fumigant in the evening, and ventilate the next morning.