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How to keep vegetables fresh in scientific papers
Now introduce several applicable methods:

freshness protection package

Save index ★★★★★★★

Suitable for tomatoes, eggplant, apples and so on.

1. Put the tomatoes in a big fresh-keeping bag, tie the mouth of the bag tightly and put them in the shade.

2. Open the bag mouth and breathe for 5 minutes every day. If the water drops condense, dry them with a clean towel, and then tie the bag tightly. It can keep fresh for more than ten days.

Preservation by package method

Preservation index ★★★★

Suitable for leafy vegetables such as spinach and oil wheat.

1. Vegetables don't need washing, just spray a little water on the leaves.

2. Wrap it in newspaper or toilet paper, put it in the refrigerator face down, and keep it for about 1 week.

Hydroponic preservation

Preservation index ★★★★

Suitable for celery, leek, chrysanthemum, vanilla and so on.

1. Buy fresh celery, remove the yellow leaves and tie it loosely in the middle with a string.

2. Put a proper amount of water into the basin, soak the celery root in the water and keep it fresh for 3~4 days.