Among the best fruit rankings recommended by the World Health Organization, strawberries ranked second. Now that the strawberry is on the market, if you have a variety of strawberries on the market with different shapes and tastes, do you have the following confusion? For this reason, a reporter from the "Life Times" interviewed Zhang Yuntao, a researcher at the Beijing Academy of Agriculture and Forestry Sciences who specializes in the breeding and cultivation of strawberry resources.
1. Why are there more and more varieties of strawberries on the market, such as the more popular butter strawberries in the past few years, what is the difference between them and the previous strawberries?
China's domestic strawberry varieties include Tianxiang, Shuxiang, and Beijing peach aroma. In recent years, China has introduced a number of foreign varieties, such as the Japanese varieties Hongyan, Fengxiang, Zhang Ji, etc.; Europe and the United States sweet Charlie, Dacelekite, Kamei Rosa. Different varieties have different textures and generally have a deep red flavor. Zhang Ji has a milky aroma and is therefore also known as “creamy strawberryâ€. Peking has a deep yellow flavour. Therefore, "cream strawberry" is not a new variety obtained through genetic modification, but is introduced by China from Japan. Different varieties of strawberries are not very different in nutrition.
2. How to pick a sweet strawberry?
1. Look at the color. The strawberry with uniform color and ruddy color has good taste, and different varieties have their inherent color, such as red color is bright red, Fengxiang is orange-red, and the fragrance of the book is dark red.
2. Look at the color of the strawberry sepals and stalks. Bracts and stalks with green strawberries are more fresh.
3. Look at the head. Jiang Guihua, deputy director of the Gardening Institute of the Zhejiang Academy of Agricultural Sciences, pointed out that the bigger the strawberries are, the better the taste of the big strawberries will be. Therefore, a strawberry that is a bit bigger and ruddy than a quail egg has a good taste.
3. What is the best time to eat strawberries? Can the anti-season strawberries be eaten?
The anti-quarter strawberries planted in the greenhouse can also be eaten with confidence. Strawberries are perennial herbaceous evergreen crops, which require high light and moisture. At the same time, they need to be cultivated in an environment with moderate temperature, moderate humidity, and a large temperature difference. Therefore, they are suitable for growing in greenhouses. The strawberries thus produced have higher sugar content and more flavor. Foot, quality is better than open ground. At present, the strawberry in the northern greenhouse enters the second market and the strawberry in the south will enter the end. The open field strawberries are picked from the middle of May and their sweet and sour taste is strong.
4. It has been reported in the media that large, hollow or deformed strawberries may hit ripening agents or bulking agents. Is this true?
In fact, there is no effect on ripening agents for strawberry. First, because strawberry results are fast and the growth cycle is short; second, its fruit is small and it is difficult to achieve a single spray; and third, the strawberry is a fruit that is not resistant to storage and after picking The storage period is very short, so there is no need to use ripeners, otherwise it is very easy to deteriorate during transportation. Some people found that the water turned red when they washed strawberries. They mistakenly thought that they had hit ripening agents. This is because the natural pigments contained in strawberries are soluble in water.
Normally grown strawberries are usually conical or wedge-shaped. If there are irregularities on the surface, malformed protrusions, or uneven colors, they are closely related to the variety and light. For example, red varieties, Tianxiang and other varieties of good pollination, it is not easy to produce deformed fruit; some strawberries half red and white, may be caused by uneven light.
5. Always worry about washing when strawberries are not clean, whether there is excessive pesticide or residue problems?
Most strawberries are safer. The strawberry itself is a plant with fast results, short cycle, and less pests and diseases. In addition, the strawberry seedlings after replacement have stronger adaptability and less pests, and basically do not need to hit pesticides. In addition, the shed's cultivation environment is relatively clean. Generally, a layer of plastic film is laid over. Even if there are insects in the soil, it will not climb up to the strawberries. Therefore, consumers do not need to worry about it.
Strawberries are more difficult to clean, because of their rough appearance, and the skin is very thin, a wash to break, you can first rinse with tap water, and then light salt water soak for two or three minutes, do not remove the pedicle head when cleaning, otherwise the dirt easily enter the strawberry inside.
6. When the strawberries are left for a period of time, some of them are white and feel like being blisters. Can you still eat them?
Strawberries are not easy to store, especially washed strawberries, stored for less than 1 day, or eat fresh, it is better if white, taste may have changed, it is best not to eat, it is recommended that strawberries do not buy too much at a time.
7. How can strawberry keep fresh?
In strawberry preservation, low temperature can inhibit the rot of the strawberry. Some people have done experiments, the rate of rotting was 36% after 36 hours at room temperature (15°C), and the rate of rotting was 7.3% at 1.7°C. Therefore, it is best to put the unwashed strawberries in the refrigerator and store them in a single layer for better preservation.
8. Is everyone suitable for eating strawberries?
Strawberries are cool, and you need to control the amount when you eat them, especially those who have a cold stomach and are prone to diarrhea. In addition, people with gastrointestinal disorders, urinary tract stones, and poor kidney function should also be aware that strawberries contain more oxalic acid and improper consumption may increase the condition of these patients. â–²
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