Vitamin is a kind of trace organic substance that humans and animals must obtain from food in order to maintain normal physiological functions. It plays an important role in the process of human growth, metabolism and development. Vitamins in the body neither participate in the formation of human cells, nor provide energy for the body.
Scientific studies have found that at least 30 different compounds are considered "Vitamins", of which more than 20 vitamins are known to be necessary for biological health.
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Peanuts promote calcium production
Peanuts are hi calcium crops. Compared with rice, corn, barley and other crops, the production of equal amounts of products requires twice as much calcium as soybean, three times as much as corn, five times as much as rice, and seven times as much as large wheat. Applying calcium fertilizer to peanuts can promote the growth of peanut roots, enhance root activity, prevent premature aging of peanuts, and enhance the ability to penetrate the soil under fruit needles and increase the number of preserved fruits. It can also promote the fullness of peanut kernels, increase the protein content of 100-grain weight and kernels, and increase the resistance of peanuts to diseases. The effect of increasing production is obvious. However, the following issues must be taken into account when applying calcium fertilizers. 1, due to soil due to fertilizer should be appropriate. Since peanuts are not resistant to salinity, they use calcium-containing acidic fertilizers (such as superphosphate, gypsum, and phosphogypsum) on salt-alkaline soils that are deficient in calcium, and saline-alkali soils in the Huang-Huai-Hai Plain, which is the main producing area of ​​peanuts in China. Can meet the needs of peanuts for calcium, but also to neutralize the soil, alleviate, cure or treat the harm of salt alkali to peanuts. For the acidic soils in the south (peanuts are mostly on the hills and red soils, the soil is mostly acidic), it is advisable to apply alkaline fertilizers containing calcium, such as calcium magnesium phosphate fertilizer, lime, etc., not only can reduce the acidity of the soil, but also improve The calcium nutrition of peanuts is conducive to the growth and development of peanuts. 2, should be timely application. As peanuts grow new roots, young roots, and fruit needles, they must not be deprived of calcium. Therefore, calcium should be used as a base fertilizer for early application and be topdressed one week before fruit needles are dispensed. Basal fertilizer accounted for 60% of the total application of calcium fertilizer, top dressing accounted for 40%. 3, the amount of application. When the application amount is too small, the effect of increasing production is not obvious, the application amount is too large, waste is caused, the economic benefit is reduced, and the calcium content of the soil is too high, which prevents the absorption of potassium by peanuts and causes soil compaction. Generally, 30-35 kg of calcium phosphate, 30 kg of gypsum, 40 kg of phosphogypsum, 35 kg of calcium magnesium phosphate, or 50 kg of lime may be applied per acre of peanut ground. In addition, during the flowering period of peanuts, 1% of superphosphate solution should be sprayed on the leaves for 2-3 times, which has a good effect of increasing production. China Agricultural Network Editor