The word "expanding" makes the Raspberry friends feel that they are both love and fear. "Love" is the use of the bulk of the fruit and the length of the fruit. "Fear" is that listening to the legend will affect people's growth and development. In fact, plant hormones and animal hormones are completely unrelated. Hormone (expanded) is actually a plant growth regulator . It is not a novel pesticide, nor is it an illegal chemical. It is widely used in fruits and vegetables in European and American countries where food safety requirements are strict. The following content of the raspberry housekeeper and the raspberry friends analyze the type of swelling and the advantages and disadvantages of using it on strawberries.
Main types of expanded
1, gibberellin
The main product of gibberellins is gibberellic acid, also known as 920. After use, it can promote the elongation of cells in strawberry fruit. The direct expression is that the fruit is elongated and plays a role of expanding fruit. The characteristic of gibberellic acid (920) is that the spray is long. Under normal growth conditions, avoiding whole plant spray, it is easy to cause strawberry plants to grow, and spray should only be applied to flowers and fruits.
The defect of gibberellin is that when the cells are elongated and the nutrients are not supplied simultaneously (especially potassium and calcium), the fruit is soft and the fruit is light.
2. Cytokinin
The components of cytokinins mainly include benzylaminopurine, chlorpyrifos, and thiabendazole. When used, it is recommended to spray only on flowers and fruits.
This is because after the fruit is used, the nutrients produced by the strawberry leaves and the nutrients stored in other parts are continuously transported to the part where it is located, so that the strawberry flower and the fruit have a competitive advantage over the strawberry. Other parts promote cell division and lateral expansion, which means that the diameter of the fruit (thickening) can be increased after spraying.
3. Auxin
The auxin is mainly composed of naphthaleneacetic acid and indolebutyric acid, and the auxin swelling agent can rapidly promote fruit expansion after being used at a reasonable concentration.
First, it has an effect similar to gibberellic acid, promoting cell elongation of the fruit;
Second, the auxin-like swelling agent has a strong effect of attracting and transporting nutrients, so that nutrients are continuously transported from other parts of the strawberry to the fruit, and the fruit is absorbed to absorb more nutrients for expansion, which is related to cell division. There are similarities.
One of the most striking features of auxin-like swells is that the high concentration of the swell can cause the seedlings to collapse, usually 2-3 days to recover naturally. When using this type of auxil, it is necessary to supplement the silicon and calcium foliar fertilizer at the same time to avoid causing the fruit quality to decrease.
Most of the above-mentioned expansion factors are not present in real identity, and most of them are invisibly added as the "secret recipe" of the manufacturer. After talking about the characteristics of these kinds of swelling agents, let's talk about the most important ones. Whether these swelling agents can be used or not, under what circumstances can be used.
Inflatable conditions
Whether you use or not to use bulking, the roots of the strawberry are absorbed and the nutrition of the leaves is fixed. Some raspberry friends believe that after spraying the swelling, I can use a little more fertilizer, but the fact is that the use of the expanded root system will not absorb more nutrients, and the leaves will not increase photosynthesis. It is often the use of fertilizer that does not have the corresponding effect, but instead causes the fat to "burn root", the most typical symptom of fat "burning root" is the edge of the old leaves.
Then the problem comes. The fruit of the expanded strawberry will expand rapidly. If it is swollen, it needs to consume nutrients. Since it can't absorb more nutrients, where does the nutrients needed for swelling come from?
As mentioned above, the characteristics of the inflated protein have been said. After spraying the expanded pigment, the fruit will be continuously regulated from other parts of the strawberry (leaf, stem, root). If the strawberry seedling is not strong enough, it will inevitably be sprayed. It consumes the nutrients stored in roots, stems and leaves, causing weak roots and premature senescence of plants. It is said to be called "this long-term elimination", which is equivalent to killing chickens and taking eggs. It is not worth the loss, especially in the low temperature season, the roots are weak, and photosynthesis is also Low, it is even more inappropriate to use inflated.
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