After the corn has sown, there is no sprout in the roots.
Answer: The roots of corn are well developed after sowing, but there is no bud or only a little bud, and then no longer grow. This phenomenon occurs every year. If it is allowed to develop, it may lead to an unacceptable harvest.
There are several main reasons for this: 1. Too deep sowing, poor soil permeability, affect the germination of young shoots, resulting in rootless shoots. 2. Excessively high soil moisture can also lead to poor soil air permeability, which prevents maize seeds from germinating normally. 3. Simultaneous sowing of seed fertilizers, close spacing of fertilizers, and burning of chemical fertilizers. 4. Problems with seed quality. For example, when the seeds are broken during sowing, the germs are damaged. 5. The amount of seed coating agent is too large. 6. The temperature is low.
What if there is a rootless bud in the ground? The lighter condition (about 10% of plots) can be left untreated. Slightly severe cases (20% to 40% plots) should be replanted in a timely manner. Very serious situation (more than 50% of plots), to buy precocious species, timely deforestation.
When corn has no buds, can it be prevented? First of all, to control the depth of corn sowing, generally a reasonable depth of 3 to 5 cm, sowing should be uniform. Second, corn seedlings should be strengthened in management. If there is excessive accumulation of water in the fields, they should be drained in time to reduce soil moisture. Third, seed fertilizer isolation, under normal circumstances, seed and fertilizer interval 7 cm or more. Fourth, pay attention to the completeness of the seed and pay attention to the amount of seed coating agent for secondary coating.
Polysaccharide is a polymeric carbohydrate composed of more than 10 monosaccharides and sugar chains bound by glycosidic bonds. Polysaccharides composed of the same monosaccharides are called homopolysaccharides, such as starch, cellulose and glycogen; Polysaccharides composed of different monosaccharides are called heteropolysaccharides. For example, gum Arabic is composed of pentose and galactose. Polysaccharide is not a pure chemical substance, but a mixture of substances with different degrees of polymerization. Polysaccharides are generally insoluble in water, have no sweetness, can not form crystals, and have no reducibility and rotation change. Polysaccharides are also glycosides, so they can be hydrolyzed. In the hydrolysis process, a series of intermediate products are often produced, and finally monosaccharides are obtained by complete hydrolysis.
Ganoderma lucidum polysaccharide is a secondary metabolite of the mycelium of Ganoderma lucidum, which exists in the mycelium and fruiting body of Ganoderma lucidum.
Ganoderma lucidum polysaccharide has unique physiological activity and clinical effect, and is safe and non-toxic. It can be widely used in medicine, food and cosmetics industries. Ganoderma lucidum polysaccharide can improve the body's immunity. When the body's immunity of cancer patients is damaged by radiotherapy and chemotherapy, it can be combined with radiotherapy and chemotherapy to cure the disease. In addition, Ganoderma lucidum polysaccharide can also inhibit the release of allergic reaction media, so as to block the occurrence of nonspecific reaction, so it can inhibit the recurrence and metastasis of cancer cells after operation. Ganoderma lucidum preparations that have been put into use include tablets, injections, granules, oral liquids, syrups and wines, all of which have achieved certain clinical effects. As a functional factor, Ganoderma lucidum polysaccharide can be made into health food, and can also be added into beverages, cakes and oral liquids as Food Additives, which greatly enrich the food market. Because Ganoderma lucidum polysaccharide has the effect of anti free radical, it can be used in cosmetics to delay aging.
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