Virus disease, leaf spot disease, scab disease, sweet potato plague, sweet potato trailing cut disease, sweet potato soft rot and so on.

Disease control methods

The first step is to use detoxified seedlings and sterilize the seedlings; the second step is to carry out pharmaceutical control according to different diseases.

For the control and prevention of physiological diseases: due to soil deficiency, physiological deficiency, poor environment and other factors (over-drying, over-humidification, sunburn, high temperature, low temperature), causing deficiency disease, sunburn, aging, weakness, wilting and other physiological diseases.

Prevention methods: choose resistant varieties or insensitive varieties; choose robust varieties with strong growth potential; appropriate watering, so that the ground surface, the plant to keep dry; maintain an appropriate density; planting plots to maintain crop rotation can be reduced.

For non-invasive diseases, control with sulfur and copper preparations. For bacterial diseases, such as soft rot, water properly while watering to keep the ground and plants dry. Fungal diseases, such as downy mildew, rust and other soil-borne diseases, can be controlled by taking measures of mulching and drip irrigation and keeping the environment dry.

Viral diseases, by controlling aphids. I. Nutritional composition:

Sweet potato tuber contains 60%-80% water, 10%-30% starch, about 5% sugar and a small amount of protein, oil, cellulose, hemicellulose, pectin, ash, etc. If 2.5Kg of fresh sweet potatoes are folded into 0.5Kg of grain, its nutrient composition in addition to fat, protein, carbohydrates, etc. content is higher than that of rice and flour, and the protein composition of sweet potato is more reasonable. Sweet potato protein composition is more reasonable, essential amino acid content is high, especially grain and cereal food in the lack of lysine in the sweet potato content is high. In addition sweet potato is rich in vitamins (carotene, vitamin A, B, C, E), and its starch is also easily absorbed by the body.

1. Carotene

Vitamin A is known as "eye protection little guardian", vitamin A is transformed from carotene. Sweet potato is rich in carotene, can provide rich vitamin A, vitamin A content can be as high as 40mg/100g fresh white groundnut, carotene is absorbed by the human body, can be converted into vitamin A. Vitamin A can maintain normal visual function.

2. edible fiber

White groundnut contains fiber equivalent to 10 times the rice noodles, its texture is delicate, does not hurt the stomach, can accelerate the digestive tract peristalsis, help defecation, clean up the digestive tract, shorten the retention time of the toxic substances in the food in the intestinal tract, to reduce constipation caused by the human body's own toxicity, to reduce the concentration of intestinal carcinogens, prevention of hemorrhoids and colorectal cancer. At the same time cellulose can absorb part of the glucose, so that the blood contains less sugar, help prevent diabetes.

3. Sugar and protein binding substances

White groundnut is rich in mucin, which is a mixture of polysaccharide and protein, the human body has a special protective effect, can maintain the digestive tract, respiratory tract, joint cavity, membrane cavity lubrication and the elasticity of the blood vessels, due to the substance can prevent substances in the arterial wall of arterial sclerosis caused by the deposition of the liver and kidneys, and other organs can prevent the liver and kidneys and other organs Connective tissue atrophy, can slow down the aging of human organs, improve muscle immunity. White groundnut also contains glycoproteins, has a very good anti-mutagenic, lipid-lowering and enhance the role of immunity.

4. Potassium

White groundnut is high in potassium, which can alleviate the drawbacks brought about by excessive intake of salt. Potassium is also an important factor in protecting the heart. As potassium is an alkaline element, white groundnut has a pH value of 10.31, which is physiologically alkaline and has the effect of neutralizing body fluids. Appropriate consumption of white groundnut is conducive to maintaining the acid-base balance of blood, which is beneficial to people's health, development and intellectual development.

5. Anti-cancer substances

White groundnut there is a physiologically active substances called "deoxyepiandrosterone" can prevent colon and breast cancer, brain cells and endocrine glands and the vitality of the endocrine glands have a great role to play in promoting the slow decline in intelligence and increase the body's resistance. Contains more carotene, lysine, plant fiber, dehydroepiandrosterone, can prevent intestinal cancer and breast cancer.

Two, therapeutic:

Tubers are often in addition to food for consumption, but also sugar and brewing, alcohol, but also starch, pectin extraction, etc., the starch can be made to make vermicelli and vermicelli can be made to create delicious dishes. Sweet potato is rich in starch, vitamins, fiber and other essential nutrients, but also rich in magnesium, phosphorus, calcium and other mineral elements and linoleic acid. These substances can maintain the elasticity of blood vessels, and are very effective in combating habitual constipation in old age. Unfortunately, most people think that eating sweet potato will make people fat and dare not eat. In fact, on the contrary, sweet potato is an ideal diet food, its calories only 1/3 of rice, and because it is rich in fiber and pectin and has a special function to prevent sugar into fat [8].

Sweet potato is not only healthy food, or a good medicine to get rid of diseases. The Compendium of Materia Medica records that sweet potato has the effect of "replenishing deficiency, benefiting vitality, strengthening the spleen and stomach, and strengthening kidney yin". "Sweet potatoes are steamed, cut, sun-dried and harvested, and are used as food, called yam grain, which makes people live longer and less sick." Gleanings from the Compendium of Materia Medica says that sweet potatoes can nourish the middle, harmonize the blood, warm the stomach and fatten the five organs. The Golden Potato Record says that it has six medicinal values: treating dysentery and diarrhea; treating wine accumulation and heat diarrhea; treating dampness-heat and jaundice; treating spermatorrhea and leucorrhea; treating blood deficiency and menstrual disorders; and treating chancre in children. The Lu Chuan Materia Medica says that sweet potatoes can generate fluids and quench thirst, and cure thirst from fever.

Sweet potatoes contain a lot of fiber and pectin that are not easily destroyed by digestive enzymes, which can stimulate the secretion of digestive juices and gastrointestinal peristalsis, thus playing a laxative role. In addition, its rich content of beta-carotene is an effective antioxidant, helping to remove free radicals in the body. In fact, sweet potato is also an ideal food for weight loss.

Remedies:

1, fried sweet potato:

Raw materials: sweet potato 250 grams.　　Preparation and use: oil, salt fried, eaten once, 2 times a day.　　Efficacy: the treatment of constipation.

2, brown sugar sweet potato leaves:

Raw materials: raw sweet potato leaves.　　Preparation and use: sweet potato leaves mashed, adjusted brown sugar, stick belly button.　　Efficacy: can cure urinary and fecal impassability.

3, decoction of sweet potato vine:

Raw materials: dried sweet potato vine appropriate amount.　　The method and use: water decoction.　　Efficacy: can cure thirst.

4, fried sweet potato vine:

Raw materials: fresh sweet potato vine

Production: the first stem regeneration fried

Effects: antihypertensive

Sweet potato recipes:

1, sweet potato chips

Materials: sweet potato

Products: sweet potato peeling, washing, steaming, mashing into a puree, add the auxiliary ingredients again mixing. Spread flat and dry, cut into small diamond-shaped pieces, into the frying pan fried.

Features: fragrant, crispy, crunchy, glutinous. No additives, handmade, not only to maintain the nutrients of sweet potatoes are not lost, there is a great extension of the preservation period of sweet potatoes, is a very good leisure food.

2, groundnut snack

Materials: 1 groundnut, white fungus 3, honey.

Practice: peeled and cut into pieces of groundnut, white fungus softened and chopped, the two together with water to cook, add honey to taste, when the snacks to eat. Suggestions: Eat 2 times a day, between meals. Taste: sweet and crunchy.

3, sweet potato cake

Take sweet potato flour 1000 grams, 300 grams of flour, 300 grams of sugar, 8 grams of soda and the right amount of warm water and mix well, fermentation is complete and put into a steamer basket with a high fire steamed. Remove from the fire and let it dry until warm, then spread sesame oil on the surface, sprinkle with green and red threads and sesame seeds, and cut into pieces for consumption. If you add some food coloring and red dates to the ingredients, it will become a fancy cake, or red date cake, which is nice in color and soft and delicious.

4, sweet potato scallion cake

Sweet potato washed and steamed, peeled and mashed into a paste, add an equal amount of flour and an appropriate amount of warm water, green onions, pepper, salt, etc. Mixed into palm-sized round cake, put into the pan, cooked in oil that is. The cake is golden in color, fragrant with green onion and sweet in taste.

5, sweet potato cake

With fermented sweet potato dough, sprinkle a little oil, made into a cake, the face of the brush on the caramelized sugar water, dipped in sesame seeds in the oven or frying pan can be baked.

6, sweet potato soup

Sweet potatoes, wash the right amount, remove the rough skin and cut into small cubes, pan hot into the vegetable oil frying, pouring into the cubes stir-fried, add water to cook sweet potatoes. Add salt, monosodium glutamate, a small amount of lard, sprinkled with chopped green onions, dripping sesame oil can be.

7, groundnut soup

Materials: groundnut 100g, white cauliflower 50g, 1.5 bowls of boiling water, 1 tsp of cornstarch

Practice:

Groundnut washed and peeled and cut into cubes, and put into the electric pot to steam. Put it into a juicer and puree it. Wash and cut the cauliflower into small pieces.

Bring the water to a boil, add the cauliflower and cook for 2 minutes, then add the groundnut puree and cook for another 30 seconds, then turn off the heat. Mix the cornstarch with 20c.c. of water and add to the soup to make a paste.

8, French fries

Sweet potatoes, washed, peeled and soaked in water for 1-2 minutes, then cut into small fries, and then into the boiling water for 1 minute, drained in a frying pan in the frying pan for about 1 minute, to be soaked enough fries to fry through, picked up and drained, cooled to room temperature and quickly sent to the refrigerator freezer, frozen by the freezer to get the frozen French fries, crispy, crisp and delicious, fragrant (黼闰).

9, sweet potato and egg rice

Rice, sweet potato 250 grams, 4 eggs, vegetarian salt, vegetarian oil each moderate. First put the rice into the pot, add the right amount of water to boil and then switch to simmering, and then the eggs into the pot with a little fine salt, poured into the hot frying pan and stir-fried into pieces, after the stewed sweet potato rice mix evenly, can be eaten

10, baked sweet potatoes

The sweet potatoes, placed around the stove fire, roasted into a slightly charred color, baked and broken open, pungent baked sweet potatoes taste, eat in the mouth! The sweet potatoes are very sweet and fragrant.

Take three bricks to prepare some things to start the fire and then it is fast fire and finally slow fire to extinguish the fire baked sweet potatoes on the good.

Materials: sweet potatoes

Practice: wash the sweet potatoes, into the oven 220 degrees for 35 minutes (depending on the size of the sweet potatoes) can be.

11, sweet potato and silver ear soup

Sweet potato is very nutritious, containing sugar, protein, fat, crude fiber, carotene, vitamin B1, B2, C and calcium, phosphorus, iron and so on. Due to the sweet potato is rich in carotene, can also be used to treat night blindness, sweet potato contains more food fiber, so there is a laxative, reduce the role of blood fat. It is the best of the low-calorie, low-fat food. Sweet potato and silver ear soup, inhibit fat, nourish the face and detoxification, nourish the body, is the most healthy face and detoxification food.

Materials: 120 grams of sweet potatoes, 15 grams of silver fungus, goji berries, 60 grams of rock sugar

Practice: Prepare the silver fungus, sweet potatoes, rock sugar. Early soaking, clean, tear small spare. Sweet potato peeled, washed, cut small pieces of spare. Pour the fungus into the casserole, add the right amount of cold water, boil over high heat, simmer for 20 minutes. Add sweet potato, continue to simmer for 15 minutes. Add rock sugar and simmer for 10 minutes. Stewed silver ear soup into a bowl, warm to eat. 12, sweet potato sausage casserole

Sweet potato is alkaline food, and many fruits and green vegetables, which is the most rare. And the general food is acidic, such as grain, chicken, duck, fish and meat, etc., and the human body's PH value of 7.34, so eating sweet potatoes is conducive to the body's acid-base balance. At the same time eat sweet potato can reduce blood cholesterol, prevent sub-health and cardiovascular disease and other "modern diseases". Sweet potato contains dietary fiber, carotene, vitamins A, B, C, E, and potassium, iron, copper, selenium, calcium and other 10 kinds of trace elements, high nutritional value, is known as nutritional nutrition by nutritionists the most balanced health food.

The shortcoming of sweet potatoes is the lack of protein and lipids, with the right amount of meat with cooking to supplement the lack of nutrients. Sweet potato sausage casserole, soft and sweet, nutrition with balanced. When you are alone, a simple pot like this is also a good meal.

Materials: 120 grams of sweet potatoes, sausage, salt, 80 grams of rice, sesame oil, moderate

Practice: Prepare rice, sweet potatoes, sausage. Sweet potato, Chinese sausage washed and cut into small pieces spare. Wash the rice, pour into the rice cooker, add sweet potato. Pour in the sausage, add the right amount of salt, mix well. Add cold water. Turn the rice cooker to simmer. When the electric gate trips open, continue to simmer for 10 minutes before turning it on again. Drizzle in sesame oil, mix well and serve. 13, millet sweet potato porridge

Materials: sweet potato 100 grams, 30 grams of millet, salt, sugar, a little

Making order: pour millet into the pot and wash, bleach away the broken, not full of particles. Peel off the skin of the sweet potato, wash and cut into cubes and pour into the pot of millet. Add a pinch of salt, not too much, too much salt will destroy the nutrients in the sweet potato. Cover the pot with a lid and bring to a boil over high heat, then switch to low heat and simmer until the sweet potatoes are fully softened. Add sugar, more or less according to personal taste. Food value: sweet potato millet porridge has a tonic, laxative, laxative effect, for some beer belly, postpartum no appetite, postoperative, dry stool patients have very obvious effect, especially gastrointestinal dysfunction is a very good therapeutic good.

14, sweet potato flour round

Main ingredient: sweet potato (amount)

Spices: sweet potato flour (amount), powdered sugar (amount)

Kitchen utensils: cooker

Practice: sweet potato peeled and sliced steamed and put in a large bowl and crushed into sweet potato puree Add sweet potato starch and a small amount of powdered sugar on the hot side (the amount does not have to be too much to knead the potato puree can be a ball) with the hands of kneading knead! The longer you knead it, the chewier it will be. Finally, it will become a smooth mashed potato dough. Take part of the mashed potato dough and roll it into long strips, cut it into small sections, roll it with some cornstarch to prevent it from sticking, and then put it into a plastic bag or tupperware box to keep it in the freezer and enjoy it slowly. When you eat it, cook it as you do the dumplings, until it floats up and fish out. The delicious potato round, a bowl of eating is not enough! 15, garlic sweet potato stewed noodles

Main ingredients: machine rolled wet noodles (200 grams), sweet potato (150 grams)

Auxiliary ingredients: green pepper (moderate), garlic cloves (moderate)

Seasonings: cooking oil (1 teaspoon), Pixi County soybean paste (2 teaspoons), black bean sauce (moderate), salt (moderate)

practice:

1, green pepper, sweet potatoes, washed Cut small pieces, garlic pat broken standby.

2, the pot of oil hot, burst the garlic cloves; pour into the green pepper, sweet potato, stir fry evenly.

3, add PI County bean paste, stir fry.

4, pour in the appropriate amount of cold water, cook for 5 minutes.

5, the wet noodles evenly yards in the sweet potato, the use of boiling sweet potato steam stew noodles.

6: When the broth in the pot reduces, turn the noodles, drizzle in the steamed fish soy sauce, and stir-fry well.

7, stewed noodles, seasoned and served in a bowl.

Three, edible contraindications:

Experts point out that sweet potatoes are best eaten at lunchtime. This is because after we eat sweet potatoes, which contains calcium substances need to be absorbed in the body after 4 to 5 hours, and afternoon sunlight can promote the absorption of calcium. However, it is best to consume sweet potatoes before lunch so that the calcium can be fully absorbed before lunch and will not affect the absorption of calcium from other foods at dinner.

When we process the sweet potato, must be steamed and boiled thoroughly, this can destroy the cell membrane of starch, because it is difficult to digest the substance. There are also such as the sweet potato in the gasification enzyme is not destroyed by high temperature, we take the food will produce discomfort. [4]

Sweet potato sprouting after the taboo on raw food, this time the sweet potato is called phoenix potatoes, there is a very poisonous, once in the countryside there are farmers digging out the buds after the raw sweet potatoes fed to the pigs and cattle, there is a case of pig and cattle poisoning deaths.

1, should not eat sweet potatoes with black spots, sweet potatoes with black spots in the black spots in the virus is not easy to be destroyed by high temperature and kill, easy to cause poisoning, fever, nausea, vomiting, diarrhea and a series of symptoms of poisoning, and will even lead to death.

2, should not be eaten at the same time and persimmon sweet potato's main ingredient is starch, after eating will produce a lot of fruit acids, if eaten at the same time with persimmons, fruit acids can be cohesive with persimmon's tannins, pectin, the formation of gastric stones. If you eat a lot of food, you should eat at least five hours apart. If you feel sick to your stomach, be sure to go to the hospital for a gastroscopy to see if you have stomach bleeding or a stomach ulcer.

Must be cooked before eating

Sweet potatoes must be steamed and boiled before eating, because the starch granules in sweet potatoes are difficult to digest without destroying them at high temperatures. Sweet potatoes contain a kind of oxidase, this enzyme is easy to produce a large amount of carbon dioxide gas in the human gastrointestinal tract, such as sweet potatoes eat too much, will make people bloating, erosion, fart.

Eating sweet potatoes "heartburn" with a little pickle

Sweet potatoes have a high sugar content, eat more can stimulate a large amount of gastric acid secretion, making people feel "heartburn". Therefore, it is best to eat sweet potatoes with a little pickle, which can effectively inhibit stomach acid.

Dyspepsia caution eating sweet potatoes

Sweet potatoes have a lot of sugar, the body can not be absorbed for a while, the remaining part of the intestinal tract to stay easy to fermentation, so that the abdominal discomfort. Chinese medicine believes that dampness obstructs the spleen and stomach, stagnant food accumulation should be cautious of eating sweet potatoes.

Sweet potatoes and persimmons should not be eaten together

Sweet potatoes and persimmons should not be eaten at the same time in a short period of time, at least five hours apart. If eaten at the same time, the sugar in the sweet potato fermentation in the stomach, will increase the secretion of gastric acid, and persimmons in the tannin, pectin reaction occurs precipitation cohesion, resulting in hard lumps, the amount of serious gastrointestinal bleeding or cause gastric ulcers. Medicinal efficacy:

Sweet potato tuber with active ingredients, anti-cancer, heart protection, prevention of emphysema, diabetes, weight loss, beauty and other efficacy, "longevity food" reputation.

Sweet potato contains unique bioflavonoids, can promote smooth bowel movement, can effectively inhibit the occurrence of breast cancer and colon cancer; can improve the function of the digestive organs, nourish the liver and kidney, but also can be effective treatment of hepatitis and jaundice.

Sweet potato protein quality is high, can make up for rice, white flour in the nutritional deficiencies, regular consumption can improve the body's utilization of staple food in the nutrients, so that a person's health, prolong life.

Sweet potatoes are rich in dietary fiber, with a special function of preventing the conversion of sugar into fat; can promote gastrointestinal motility and prevent constipation, used to treat hemorrhoids and anal fissures, etc., on the prevention of rectal cancer and colon cancer also has a certain role.

Sweet potato has a special protective effect on the mucous membrane of human organs, which can inhibit the deposition of cholesterol, maintain the elasticity of blood vessels, prevent the connective tissue in the liver and kidney from atrophying, and prevent the occurrence of collagen disease.

External use:

Potato compresses for sores, leaf juice coated eczema, vine compresses for snake and dog bites; young potato seedling leaves, water spinach leaves, brown sugar compresses umbilical cord for nephritis edema and cirrhosis of the liver and ascites, etc. have a certain degree of efficacy. Brazilian sweet potato Simon 1 is the clinical application of the highest efficacy of varieties, there is the treatment of cancer, type one seven diabetes and other difficult cases.

Weight loss, beauty:

Eating sweet potato will not make people fat. According to scientific research, eating sweet potatoes will not make people fat, on the contrary, sweet potatoes are still an ideal diet food. It contains a very low calorie content, much lower than the average rice, so do not have to worry about getting fat after eating, but can play a role in weight loss.

Sweet potato also contains a kind of estrogen-like substances, on the protection of human skin, slow aging has a certain role. Therefore, many foreign women take sweet potato as a beauty food.

Anti-cancer:

Scientists have found that sweet potatoes contain a chemical called hydroepiandrosterone, which can be used to prevent colon cancer and breast cancer. [3]The most cancer-fighting nutrients in the diet are beta-carotene (a precursor to vitamin A), vitamin C, and folate, and all three are found in abundance in sweet potatoes.

One small sweet potato (about two taels) can provide two times the amount of vitamin A, one-third the amount of vitamin C, and about 50 micrograms of folic acid; the content of dietary fiber is higher than that in a bowl of oatmeal. Regular consumption of sweet potatoes helps to maintain normal levels of folic acid in the body, and low levels of folic acid in the body can increase the risk of cancer. The high content of dietary fiber in sweet potatoes has the effect of promoting gastrointestinal motility, preventing constipation and colorectal cancer.

Heart-healthy

Sweet potatoes are rich in potassium, beta-carotene, folic acid, vitamin C and vitamin B6, all five components help prevent cardiovascular disease. Potassium helps the body's cellular fluid and electrolyte balance and maintains normal blood pressure and heart function.

Beta-carotene and vitamin C have anti-lipid oxidation and prevent atherosclerosis. Supplementation of folic acid and vitamin B6 helps to reduce blood levels of homocysteine, which can damage arterial blood vessels and is an independent risk factor for cardiovascular disease.

Preventing emphysema

The reason why some long-term smokers live to be more than 90 years old without developing emphysema may be related to the abundance of vitamin A in their daily diet. Researchers suggest that those smokers or passive smokers would do well to eat foods rich in vitamin A, such as sweet potatoes, every day to prevent emphysema.

Antidiabetic effect

Japanese researchers found that diabetic obese rats eating white-skinned sweet potatoes for 4 weeks, 6 weeks after the blood insulin levels were reduced by 26%, 60%; and found that sweet potatoes can effectively inhibit the increase of blood glucose levels in diabetic obese rats after oral administration of glucose; eating sweet potatoes can also reduce the levels of triglycerides and free fatty acids in diabetic rats.

Research suggests that white-skinned sweet potatoes have a certain anti-diabetic effect. A clinical study at the University of Vienna in Austria found that insulin sensitivity in type 2 diabetes patients improved after taking white-skinned sweet potato extract, which helped control blood sugar.

Sweet potato soup can lose weight and slim down:

Crude grains are rich in dietary fiber, and when they enter the intestines, they can clean up the waste in the intestinal tubes and collect the toxins and wastes, so they can be smoothly discharged out of the body. Sweet potatoes are also rich in food fiber, and the vitamin content is particularly high, can create new cells in the intestines to promote metabolism.

Weight loss sweet potato soup practice

Sweet potato 1, peeled and shredded, onion 1/4, cut into small pieces, kelp moderate, shredded, portobello mushroom shredded. Boil water in the pot, the sweet potato shredded, onion shredded, portobello mushroom shredded, kelp shredded pour into the soup to boil, and then cook over low heat for 10 minutes, add salt, chicken essence, sesame oil seasoning can be eaten. This soup can make the blood flow smoothly and deliver energy to the blood; and the kelp can not only bring out the fresh flavor of the soup, but also replenish minerals to the body.

Can prevent the flu

The U.S. media recently published an article pointing out that sweet potatoes can help fight the flu and prevent colds. Sweet potatoes are the best food source of beta carotene, which helps the body make enough white blood cells to fight infections caused by the invasion of cold and flu viruses. Sweet potatoes can be eaten in a variety of ways, including steamed, baked, or pureed.