How to grow the blueberry in the greenhouse

Blueberry is a fibrous, shallow-rooted plant with no taproot. Its roots are fibrous and thin. Blueberry roots prefer a humid environment but are not waterlogged. This characteristic determines that the irrigation strategy for blueberries is to use a small amount of irrigation at a time but with a high frequency. The drainage and air permeability of the substrate must be good. Excessive irrigation can easily cause poor root breathing, hinder growth, affect flower bud differentiation, reduce yield, or even kill the plant.
Moreover, blueberries are oligotrophic plants, especially the demand for nitrogen fertilizer throughout the entire growth period of blueberries, which places higher requirements on the amount of fertilizer and fertilization technology. The blueberry root system is very sensitive to pH. Blueberries are acidophilic, so they must not only be cultivated in an environment with a pH value of 4.0-5.5, but also cannot be used with alkaline fertilizers. Therefore, good fertilization and water management are very important.
Reasonable irrigation is determined by the following aspects: water quality, irrigation amount, fertilization plan, etc. There are many knowledge points that need to be paid attention to in each link.

Water quality: Blueberries have strict requirements for water quality, so it is very necessary to test the water quality before planting, such as the determination of EC value, pH value and other trace elements.
Fertilization plan: Blueberry is a typical oligotrophic plant that requires relatively little fertilizer, which requires us to accurately allocate the amount of fertilizer. Fertilization too little will not help the growth of the plant, and too much will cause fertilizer damage. Shengda's integrated water and fertilizer machine has intelligent and precise control, which can effectively avoid fertilizer damage to the plant.
When too much phosphorus fertilizer is applied to blueberries, not only will the yield not be increased, but the fruit maturity will be delayed.
Potassium fertilizer has a significant effect on increasing the yield of blueberries, and helps the fruits to mature early, have high quality, and enhance stress resistance. However, if the dosage exceeds the standard, there will be negative effects. If the solidification becomes smaller, overwintering damage will occur, etc. Blueberries should avoid alkali, and do not use alkaline fertilizers when fertilizing. Incorrect fertilizer use may result in severe yield loss or even plant death.
The irrigation amount of blueberries considers two factors: the maintenance of root moisture and the collection and detection of drainage fluid.

Water: Blueberries like moist spaces and are sensitive to water. The soil must be kept moist but not waterlogged. Blueberries have different water requirements at different growth stages: ① Bud and flowering stages: Adequate water supply can guarantee a basis for budding, flowering and fruiting. During this period, the relative water content of the substrate can be maintained at around 60%-65%. ② The water requirement during the fruit expansion period is relatively large: the water content can be maintained at around 70%-80%. ③ During the color change and maturity period, we need to control water. The water content of the substrate can be around 60%-65%. After picking, we need to restore the water supply to promote the nutritional growth of blueberries.
④ After entering autumn, from mid-autumn to late autumn, in order to prevent excessive growth in the later period, you can appropriately reduce the supply of water and control the water content at around 50%-60%.
Drainage:
Especially for substrate cultivation, drainage is a very important observation factor.
Drainage can help us flush the substrate and prevent the accumulation of excessive salt. Drainage can take away excess water in the substrate, and the temperature of the substrate can be stabilized by irrigation and drainage;
And after the drainage is thoroughly disinfected, the valuable nutrients and water can be reused, which not only improves the utilization rate of fertilizers, but also saves costs and avoids environmental pollution.