2022.04.12
As we all know, flower pots are not suitable for growing vegetables, because there are holes in the bottom, and the water storage is very poor. As soon as it is watered, it leaks out, and it also takes away soil nutrients. Compared with the hollowed-out flowerpot at the bottom, the foam box is airtight. As long as a hole is dug on the side of the box, water can penetrate in, which is definitely better than the flowerpot.
Professionals say that common foam boxes or plastic boxes are organic substances, which are relatively stable in themselves, and the polymeric molecular structure is firm and large. Even after natural high temperature exposure, the decomposition is extremely limited, and it is difficult for plant roots to absorb foam box substances. If foam or plastic is said to be toxic, it may refer to additives in foam boxes or plastic boxes, or toxic substances such as heavy metals that have been loaded in factories. Foam boxes generally used for fruit should be relatively safe.
However, the composition of the foam box is polystyrene, which is obtained by suspension polymerization of styrene monomer and then adding a foaming agent. It is a colorless and transparent thermoplastic. When the external temperature is higher than 100 ° C, it will It will naturally soften, and when the temperature reaches 200 ℃, it will completely melt into a liquid.
When planting vegetables, it is best not to use discarded foam boxes to grow vegetables. The use of these discarded foam boxes is unclear, and it is possible that the box body is contaminated with harmful ingredients during use. Planting vegetables in such foam boxes is definitely unhealthy. .
Growing vegetables on the balcony is a very popular way of life for urban residents, and the phenomenon of using plastic foam boxes as flower pots is also very common. In addition, the foam box is easy to soften and decompose. If it is used for growing vegetables, it is best to change it every year, which can better ensure the safety of soil and vegetables.
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