Causes and solutions of poor strawberry coloring

The color of strawberry is generally red, and the phenomenon of poor fruit coloring is easy to occur in the process of cultivation, although it will not affect the taste of strawberry, but because it does not sell well, it will reduce the desire to buy and seriously reduce economic income. So what is the cause of poor coloring of strawberries? Let's get to know it with the editor.

I. causes of poor coloring

The main results are as follows: 1. after the fruit is fully expanded, its coloring is closely related to the nutrition supply. when there is too much nitrogen and the lack of potash and boron fertilizer, the fruit will be bad. In addition, mineral elements such as calcium, molybdenum and boron can promote the coloring of the fruit, and the lack of them will also hinder the coloring of the fruit.

2. In the peak period of fruit expansion, the lack of moisture will also lead to poor pericarp coloration.

3. Strawberries are stolons, so the fruit will often come into contact with plastic film and bedding grass after fruiting. For a long time, because the contact surface can not receive sunlight, there will also be poor coloring.

4. Fruit coloring is greatly affected by temperature, light and soil conditions, in which the suitable temperature for anthocyanin pigment formation is 20-25 degrees, too high or too low temperature is not conducive to its synthesis. In case of continuous low temperature or lack of light, especially when the greenhouse temperature is lower than 5 degrees, green fruit is very easy to occur; lack of light, low sugar content in berries or insufficient phosphorus and potassium fertilizer will cause physiological ginkgo, all or part of the fruit surface is white or yellowish white. There is also a circle of red near the white fruit, the flavor of the fruit is light, the texture is soft, and the pulp is pink or white.

5. The color of fruit is also related to endogenous hormones, and excessive use of hormones is easy to form green top fruit.

II. Solutions

First of all, it is necessary to regulate the temperature and improve the light conditions in the shed as much as possible, and the base fertilizer should be fully organic fertilizer, reasonable close planting and shading between Jiamusi plants. Keep the greenhouse film bridging to prevent water droplets and dust from being attached to the film surface, and the ground can be covered with silver gray film, aluminum foil or reflective screen to increase the light intensity between plants. Fulvic acid fertilizer and potassium, calcium, molybdenum and boron fertilizer can be sprayed in the fruit shader, which can promote fruit coloring, but not effectively prevent premature senescence of leaves. The leaves that affect the coloring should be removed in time during the fruit expansion period, which can increase the coloring and prevent the coloring of the fruit branches from being affected by overlap and extrusion. The strawberries can be turned over about three days after the strawberry color conversion period, so that the previous side close to the ground can also be exposed to the sun.

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