During lettuce elongation, sufficient nitrogen and potassium fertilizers are needed to expand rapidly. The specific cast is as follows:
Nitrogen and potassium fertilizers were applied once at the beginning, middle and later stages of lettuce elongation, each time applying 15 to 20 kg of urea, 8 to 10 kg of potassium sulfate, or 20 to 25 kg of potassium nitrate to water or biogas slurry or After the decomposed human and animal dung water is 150 to 200 times, it is evenly sprayed on the soil around the roots of the lettuce plants, and it is appropriate that the fertilizer liquid completely penetrates into the soil and does not flow out. In addition, during lettuce elongation and expansion, 0.3% urea, 600 times potassium amino acid mixed solution, or 0.5% potassium nitrate aqueous solution should be sprayed 2 to 3 times every 7 to 10 days. Spray all the leaves evenly, and it is advisable to start dripping water drops, and supplement the nitrogen and potassium fertilizers from the leaves.
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Anthocyanidin, also known as anthocyanin, is a class of water-soluble natural pigments, flavonoid compounds, widely found in plants. It is also the main coloring substance in plant petals, and most of the colorful colors of fruits, vegetables and flowers are related to it.Anthocyanins belong to the flavonoids (flavonoids) of the phenolic compounds.
Anthocyanins provide a variety of benefits to the human body. Fundamentally, anthocyanins are a powerful anti
oxidizer, which protects the body from damage caused by a harmful substance called free radicals. Anthocyanins also enhance the elasticity of blood vessels, improve the circulatory system and smoothness of the skin, inhibit inflammation and allergies, and improve the flexibility of joints.
Also used in cosmetics, such as red anthocyanins for lipstick. These commercial pigments (in addition to grape skin pigment) is a common feature of light, heat, oxygen stability, microbial stability. Generally soluble in water and ethanol, insoluble in vegetable oil.
There are over 300 different anthocyanins in nature. They come from different fruits and vegetables such as purple sweet potatoes, lingonberries, cranberries, blueberries, black goji berries, grapes, elderberries, blackcurrants, purple carrots, and red kale, ranging in color from red to blue. These anthocyanins mainly contain Delchindin, Cyanidin, Petunidin and Peonidin. Of these, blueberries contain the largest amount of anthocyanins and have the most nutritional value.
Anthocyanins,Cyanidin,Proantho Cyanidins
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