Four ripening methods for watermelon ripening
The development of watermelon fruit needs a certain period of time. Under normal circumstances, early maturing varieties require 28 to 30 days from the opening of female flowers, medium-maturing varieties require 30 to 35 days from the opening of female flowers, and late-maturing varieties require 35 to 40 days. Moderately ripe watermelon has a sweet taste, good tan color, good tannins and juice, less fiber, good flavor, and good quality. At present, the main methods for judging the ripeness of watermelon are visual inspection, hand touch or tapping, marking, and specific gravity. 1. Visual measurement After the fruit matures, the peel is hard and bright, the pattern is clear, the umbilical and peduncle parts of fruit are inward contraction and depression, the yin of the fruit confession turns arbitrarily yellow and rough, most of the villi on the stalk are shed, and 1 to 2 of the guava section are observed. The knot tends to wither and so on, these can be used as a sign of watermelon ripening. 2, hand touch or flapping method Mature watermelons have a smooth feel when touched; immature watermelons have astringent feeling when touched. In addition, when you use your hands to hold melons, tapping or fingering the melon, if you give out the low voiced sounds of pipa, pimple and quail are mostly cooked melons, on the contrary, if you give birth to pipa, pipa and pipa, the solid sound is mostly raw melons. 3, mark method It is based on the maturity of each species requires a certain amount of accumulated temperature and days, based on flowering pollination, single flag melon. According to the accumulated temperature or number of days required for the maturity of each species, the maturity period is calculated. By combining the dates of the melons and the check of the cut melons, it is possible to ensure the ripeness of the collected watermelons. 4, the proportion of law The proportion of ripe watermelon and water is different at room temperature. The specific gravity of water is 1, while that of mature ripe melons is 0.9 to 0.95. Put the watermelon in water and observe. If the watermelon is completely submerged, it indicates that it is raw; it is surfaced to a large extent, indicating that the specific gravity of the melon is less than 0.9, and the watermelon is too ripe; if the surface is not large, it indicates that the melon is ripe. In practical applications, in order to accurately determine whether a watermelon is ripe, comprehensive consideration should be given to various factors. It cannot be asserted by a single factor alone. Harvest maturity should also be determined based on market conditions. If the local supply can pick nine ripe melons, supply the market in the afternoon or the following day. Transportation and harvesting of eight ripe melons can be harvested in the field. The quality of the watermelons currently available on the market is poor. Except for the nature of the varieties and the degeneracy of the varieties, the picking of raw melons is an important reason. In addition to the lack of identification experience for the maturity of watermelons, it is mainly human factors. Some melon farmers believe that early melon prices are high and raw melons are heavy, and early harvesting is beneficial to later growth and results, regardless of the impact of raw melons on quality. The nutritional value of chicken
3.
Chicken has more vitamin A than other meat, but its content is worse
than that of vegetables or liver, but the content of vitamin A is much
higher than that of beef and pork.
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1.
Chicken protein content is high, and easily absorbed into the body to
use, there is to enhance physical strength, strong body function. In
addition, chicken also contains fat, calcium, phosphorus, iron,
magnesium, potassium, sodium, vitamin A, B1, B2, C, E and niacin and
other ingredients.
2. Chicken potassium sulfate amino acid content is also very rich, it can make up for lack of cattle and pork.
1.
Chicken sex, warm, sweet, spleen, stomach; can be warm, supplement
essence and marrow; for the treatment of Consumption thin, the less
virtual diet, diarrhea, dizziness, palpitations, irregular menstruation,
postpartum milk less , Diabetes, edema, frequent urination, tinnitus and other deafness.
2.
Chicken on malnutrition, cold chills, fatigue, irregular menstruation,
anemia, weakness and so have a good therapeutic effect. Chinese medicine believes that the chicken has warm, tonic fill fine, spleen and stomach, live blood, strong bones effect.
3. eat chicken cooking flowers can enhance the liver's detoxification function, improve immunity, prevent colds and scurvy.