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What meteorological factors does jujube tree growth require?
Germination stage: when the daily average temperature reaches 13--14°C, germination begins; at 17°C, leaves unfold. Flowering stage: when the daily average temperature reaches 19--20°C, flower buds appear, and at 20--22°C flowering begins. During full bloom, the optimal temperature is 22--27°C and the relative humidity is 60%--70%. A relative humidity below 25% will cause a large amount of "scorched flowers" and young fruit drop. Fruit ripening stage: the optimal temperature for fruit development is 25--27°C, with relative humidity around 75%. Optimal temperature during the fruit ripening stage 1
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What nutritional roles does protein play in pigs?
Protein is the material basis of all life. Protein is the main component of all cells, accounting for 15%-21% of the body. The muscles, nerves, connective tissue, blood, etc. in the body all have protein as their basic component. The hair, horns, feathers, hooves, etc. on the body surface of livestock are composed of keratin. Enzymes, hormones, antibodies in the body and products such as milk, meat, eggs and hair all contain protein components. The proteins of the organs and tissues of the livestock body are constantly renewed during metabolism. According to research, half of the protein in the body is renewed within 6-7 months. Therefore, even
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How does the rice variety Jiayou 99 perform?
Variety characteristics: This combination was bred by the Jiaxing Academy of Agricultural Sciences and is an indica-type hybrid combination. It has been trial-planted in our city for two years. The full growth period for single-season planting in our city was 154 days in 2001 and 148 days in 2002. It is highly photoperiod-sensitive, with moderate to above-average tillering, a plant height of 121 cm, a large panicle type, 228 total grains per panicle, a seed-setting rate of about 75%, and a 1000-grain weight of 27.9 g. It has good resistance; the flag leaf is erect, with green stems and yellow ripening, and good late-stage ripening appearance; it has good yield potential and extra-premium grain quality, with a yield in 2002
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How to handle a fish after the gallbladder is broken so it does not taste bitter
When preparing fish, never break the gallbladder. This is because the bile is extremely bitter, and once it touches the flesh it makes the flesh very bitter too, and no amount of washing or seasoning will help. What is more, fish gallbladder contains mild toxins, and even high heat will not eliminate the toxicity. So what should you do if you do break the gallbladder? Apply wine, baking soda or baking powder to the contaminated surface of the flesh to dissolve the bile, then rinse with cold water, and the bitterness can be removed.
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What temperature requirements does soybean growth have? Detailed explanation of the suitable temperature range
Soybean is a warm-season crop and has different temperature requirements at each growth and development stage. First, seed germination is very sensitive to temperature: the minimum germination temperature is 6°C, emergence is 8-10°C, and seedlings suffer slight frost damage at a low temperature of -4°C. Throughout the growth period, the optimum growth temperature for soybean is a daily average temperature of 20-25°C, among which the optimum growth temperature for seedlings is 20-21°C, the flower bud differentiation stage is 21-23°C, the flowering stage is 22-25°C, the pod-setting and seed-filling stage is 21-23°C, and the maturation stage is 19-
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What effect does high summer temperature have on Gastrodia elata?
In low-altitude hilly areas, under high temperatures of 32-34°C, lasting 10 days (240 hours) has little effect on Gastrodia elata and can still produce arrow tubers, while when the high temperature lasts 15 days (360 hours), the yield of Gastrodia elata will be affected. Therefore, the baseline of Gastrodia elata's tolerance to high temperature is relatively high. Summering of Gastrodia elata is not only related to the value of the absolute high temperature, but depends even more on the duration of the high temperature. Because under outdoor natural conditions there are monthly temperature differences and daily differences from day-night changes, and in addition artificial cultivation adopts shading and other regulating measures
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Does more dried flowers in jasmine tea mean better quality?
True scented tea is made by scenting the tea base (the raw tea leaf material for scented tea) with fresh flowers. Scenting means the tea base is dried and cooled, then an appropriate amount of fresh jasmine flowers is added, and it is left sealed for a certain time so that, using the tea's adsorption, it fully absorbs the flowers' fragrance; then the flowers are sifted out, and the tea is dried again, giving the finished jasmine tea. High-grade jasmine tea must be scented 3-5 times, even 7 times. The sifted jasmine flowers no longer have fragrance and are called dried flowers or flower dregs. High-grade jasmine tea has no jasmine flower dregs; lower-grade tea, for the sake of appearance, is mixed with a small amount of jasmine flower dregs. From this it can be seen
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Key Technical Points for Feeding and Management of Does During the Breeding Period
The purpose of raising female sika deer is to require does to have high fertility, a healthy constitution, and to produce superior offspring. Whether does can produce superior offspring is not only related to the breed of the doe, but also extremely closely related to feeding and management. Only good feeding and management can enable does to give full play to their superior production performance. According to the nutritional needs and feeding and management characteristics of does at different stages, doe feeding and management can be divided into three periods, described as follows: I. Feeding and Management of Does During the Mating Period Every year
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Does a redder color mean fresher sea fish?
People who like to eat sea fish raw all have this kind of "experience": when choosing seafood such as salmon, tuna and northern scallops, they feel that the redder it is, the fresher it is. But when they buy it home to eat raw, they are very surprised: it is clearly bright red in color, so why does it taste bland and insipid, and have no chewiness or elasticity when chewed? The reporter learned from seafood experts: red-colored tuna and the like must be placed in a cold storage at minus 55 degrees Celsius to maintain fresh and delicious meat flavor. Due to limited conditions for distributors, many of these raw fish chunks and sashimi sold on the market
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What pathogenic effects does feed contamination have on fish?
Because some feed products currently contain bacteria at levels far exceeding the standard, mass fish deaths occur from time to time after fish eat contaminated feed. Based on the disease symptoms in fish, it can be roughly divided into two types: acute type (explosive) and chronic type. 1. Acute type (explosive type): After fish eat contaminated feed, disease onset occurs in as much as 3 to 5 days, or as little as 1 to 2 days, with symptoms appearing; severely affected fish have already died, and the number of dead fish shows a gradually increasing trend, but feeding is not affected, and most fish can eat normally. This kind of
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