So, what is the premature aging of strawberries? How to recover? What about premature aging of strawberries? Look down together.
How is strawberry premature aging? 1. Strawberry is weak in Vivi stage, but it blooms and bears fruit too early in flower and fruit stage, and its root absorption capacity is not strong, and its photosynthetic efficiency is not high. In the later stage, the continuous growth of stems and leaves consumes a lot of nutrients, and the nutrient absorption rate can't keep up, so it can't supply reproductive growth and nutritional growth at the same time, which leads to a sharp decline in yield.
2. Improper fertilization can promote cell division, plant respiration and nutrient absorption, and enhance crop stress resistance.
However, if excessive phosphate fertilizer is applied, the respiration of plants will be too strong, the reproductive organs will mature prematurely, and strawberries will blossom and bear fruit in advance, leading to premature aging. Moreover, excessive phosphorus application can also lead to element deficiency.
3. Improper use of hormones and drugs. Low concentration of regulators can promote rooting and other positive effects, but high concentration will cause phytotoxicity, so improper use of plant growth regulators will cause premature aging.
What causes premature aging of strawberries? 4. Lack of trace elements in leaves leads to premature aging. Although trace elements are needed in small quantities, they are characterized by element deficiency when lacking. For example, when iron, magnesium and zinc are deficient, the leaves will turn yellow, the photosynthesis of the leaves will be blocked, and the photosynthetic rate will decrease, which is also one of the reasons.
5. Strawberry seedlings did not control their overgrowth in time at the early stage of vigorous growth, and no measures were taken to control their overgrowth in time. In the middle and late stage, the growth motivation is insufficient, and there is still not enough nutrition to support the normal growth of plants, which leads to premature aging and affects fruit yield.
6. Diseases such as pathological premature senility brown spot, leaf blight and snake eye disease infect leaves, and the damage of leaf function will affect photosynthesis and cause premature senility, as well as insects biting leaves; Root rot and anthracnose affect the roots, which directly leads to the whole strawberry plant withering when it is seriously aging.
How to restore premature senescence of strawberry 1, and clear the stolon of strawberry in time after picking fruit. Mature strawberry fruits will produce a large number of stolons after harvesting, which will consume a lot of nutrients in strawberries, reduce flower bud differentiation of strawberry plants, reduce stress resistance of strawberries and increase the probability of diseases.
2. Taking off the old leaves in time and keeping only the newly released leaves can stimulate strawberry to sprout more new buds, reduce the occurrence of stolons, increase the number of flower buds in the later period of strawberry, and lay a foundation for increasing production in the future.
3. Pay attention to nutritional supplements. Foliar spraying combined with strawberry needs nutritional supplement every time it bears fruit to promote plant recovery. We can apply balanced potassium fulvate and rare earth water-soluble fertilizer to promote the healthy growth of roots and supplement the nutrients needed by plants. In addition, the foliar fertilizer containing boron and calcium containing organic titanium should be sprayed continuously for 2-3 times, so as to facilitate strawberry to set a large number of fruits and improve photosynthetic efficiency.
4. Pay attention to the maintenance of root system. As mentioned above, the application of mineral source potassium fulvate and rare earth water-soluble fertilizer is to promote the healthy growth of roots and supplement nutrients. Combined with biological bacteria with their own nutrients, other nutrients such as organic matter, amino acids, protein and vitamins are supplemented by fertilization to improve the soil. This can make the roots of strawberries more active, enhance the resistance of strawberries to low temperature and improve the comprehensive absorption of nutrients.
5. Pay attention to the prevention of pests and diseases. This period is mainly powdery mildew, gray mold, aphids, red spiders and so on. Once it happens, measures must be taken, otherwise the loss will be great. When spraying pesticides, it is suggested to add organic fluorine synergist which can eliminate the drug resistance of pests and diseases, improve the effect of commonly used drugs and reduce pesticide residues.