In winter, the process of planting strawberries is prone to problems such as blocked flower bud differentiation, blocked flower fertilization, and blocked fruit development. In particular, rigid fruit is prone to occur. Although the strawberry rigid fruit is physiologically mature, the fruit is extremely small, poor taste, cork, and The texture is hard and loses edible value and commodity value. So, what is the root cause of the rigid fruit? How to prevent strawberry stiff fruit?
cause
1. Too high or low temperature during flower bud differentiation or flowering period, poor development of flower organs or poor fertilization, insufficient supply of assimilation substances, or too many results, loss of nutritional competitiveness, resulting in the hindrance of the formation of seed and pulp gelatin, and the speed of fruit expansion slow.
2. The relative humidity in the greenhouse during the flowering and fruiting period is above 85%, the anthers are not easy to crack, and the ovary is not completely pollinated, which also causes the fruit to deform and form deformed fruits.
3. Excessive application of nitrogen fertilizer can cause excessive plant vegetative growth, inhibited reproductive growth, hindered the absorption of zinc, boron, potassium and other elements, or lacked potassium, zinc, boron and other elements in the reproductive stage to form rigid fruits.
4. Low ground temperature or soil compaction, or other leaves and fruits competing for nutrients, or too much fruit, or plant malnutrition or premature aging, insufficient soil nutrients, or plant root growth and development are inhibited, which affects the nutrient supply for fruit expansion.
5. Due to the lengthy plants in the seedling stage, the high concentration of chlormequat treatment inhibits the normal growth and development of the plants, the internodes of the plants are extremely short, the leaves are clustered and small and thick, and the fruits are not developed.
Prevention skills
1. Reapply organic fertilizer, fertilize the soil, promote the formation of aggregate structure, retain water and fertilizer, and provide an excellent environment for the growth and development of plant roots. The nutrient elements of fertilization are properly matched. It is recommended to choose different formulas of water-soluble fertilizers according to the different periods of the strawberry and the difference in growth, and pay attention to prevent partial nitrogen in the soil. The amount of fertilization is neither lacking nor exceeding, so as to fully meet the physiological needs of strawberry plant growth and development.
2. By controlling the facilities of protected areas, it can fully meet the different needs of grass poison for temperature, light and humidity in different growth periods. Especially in the flowering period and fruit expansion period of strawberry, it is necessary to regulate the nutrients, light, temperature, humidity and other conditions to lay a good foundation for fruit expansion.
3. Raise the ground temperature to promote nutrient absorption and metabolism in the body. At the same time, topdressing growth regulators and nutrients such as potassium, zinc, and boron can supplement the plants with sufficient nutrients.
4. In severe winter, if the sunlight is weak or the night temperature is high in the cloudy and snowy day, the plant produces less nutrients during the day, but consumes more at night. Measures such as supplementing the light at night or lowering the night temperature to a minimum or increasing carbon dioxide fertilizer can be adopted. Reduce nutrient consumption and reduce dead fruit. Thinning flowers and fruits, controlling the amount of results; regular inspections, removing deformed fruits and rigid fruits at any time.
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