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Red oak stem tip vegetables are extremely popular
Red clams are also called sweet potatoes, sweet potatoes, and red clams. The underground growing potato chips are highly nutritious and are favored as important food crops, industrial raw material crops and nutritious health foods. However, the parts of the leaves and stems on the ground are often neglected. They are used as forages and even wastes, but they are not valued and developed. In fact, the whole body of sweet potatoes is a treasure. "The sweet potato leaves, sweet potato soup, and sweet potatoes can not live," the ballad is a true portrayal of the importance of sweet potatoes in people's lives. Today, in the pursuit of nutritional and healthy dietary ideas, sweet potato stem tips as a nutritious, health-care high-end specialty vegetable varieties, the development prospect is broad. The habit of using sweet potato stem tips as vegetables has been common in southern China. Vegetables are also common in Japan, South Korea, and Southeast Asia. Hong Kong and Taiwan have regarded the sweet potato stem tips as “vegetable queens†and sell for around HK$100 per kilogram. In Guangdong, Shenzhen, Shanghai, Hangzhou and other major cities, the fresh sweet potato stem tip has become a special dish for high-end hotels and restaurants. It is extremely popular. We usually pick the young part of the top 10-15 cm (including the stem, parietal and petiole) of the potato vine and call it the sweet potato tip vegetable. It is very nutritious. According to analysis and research, compared with 14 kinds of vegetables such as spinach, celery, cabbage, rapeseed, leeks, leeks, cucumber, pumpkin, wax gourd, eggplant, leeks, carrots, etc., the sweet potato tips are found in proteins, fats, carbohydrates, calories, and fiber. Calcium, phosphorus, iron, carotene, vitamin C, vitamin B1, vitamin B2, nicotinic acid, ash and other indicators, in addition to ash is slightly lower than spinach ranked second, the rest of the sweet potato stems and leaves are in the first place. Sweet potato stems and leaves compared with spinach, iron, calcium, vitamin B, niacin, etc. are more than 2 times of spinach, and oxalic acid is only half of spinach, oxalic acid low is conducive to the body's absorption of calcium, not easy to form stones. The content of carotenoids in sweet potato stems and leaves was 3 times higher than that of ordinary carrots, and 600 times higher than that of potatoes, fresh corn and taro. At the same time, the sweet potato stem tip is rich in dietary fiber and various active substances, medicinal ingredients, with the ability to regulate the body's immune function, improve disease resistance, delay aging, increase platelets, stop bleeding, anti-cancer, blood sugar, prevent night blindness and other health rehabilitation Features. In addition, during the growth of sweet potato in our province, almost no pests and diseases occur, and the use of chemical fertilizers and pesticides is rare, and it is a natural pollution-free “green foodâ€. Sweet potato tips are not only nutritious, but also have excellent taste and are easy to process. The fresh sweet potato stem tip is green, and it is hot and cold, with a green, tender and delicious taste. The taste is better than that of similar water spinach and edible fungus, etc. It can also be used for cooking, burning soup, and stuffing. The fresh sweet potato stem tips can be processed into quick-freezing cans and convenience foods through processes such as washing, blanching, and quick freezing. Can also be extracted from the shoots of the young leaves of the clear juice, added to the noodles (20% of the weight of flour), processed into a light green, nutrient-rich health noodle. Blended with tea blend (59.6% of tea, 40% of sweet potato tips, and 0.6% of freeze-dried medicinal materials), it has been scientifically processed into sweet potato health tea, which has the complex fragrance of sweet potato leaves and tea, sweet taste, and nourishing health care functions. There are many varieties of sweet potatoes, and not any of the stem tips of sweet potatoes can be delicious vegetables. Suitable varieties for vegetable cultivation, usually require: high nutritional content of stem tips, eating tender and fresh, no bitter astringent taste, sweet, good palatability; shoot tip high yield, thick, soft and smooth, no hair, green color; Strong regeneration ability, short vine branching, strong plant growth, high economic output. In recent years, sweet potato breeding units in China have begun to pay attention to the selection and breeding of vegetable varieties, and have cultivated, introduced and selected a number of excellent food varieties. The well-behaved sweet potato 7-6, food 20, yam potato 53, and Lushu 7 have been performing well. Taiwan, Taiwan and other 71. In order to achieve good economic benefits for the development of sweet potato shoot-tip vegetables, growers should adopt appropriate cultivation methods according to their actual conditions. 1. The yams take care of large ridges and double lines for dense planting. The ridge width is 80-90 cm and the plant spacing is 20 cm. When the main vine reaches 20 cm long, the top is removed and the branches are increased. The picking begins when the branch length reaches 15 cm or more. , generally cut 10-15 cm tip of the stem, leaving 2-3 internodes in order to increase the branches. 20-30 days after planting began to cycle picking, fresh stem tips harvest every day, 400-500 kg per month can be picked. After picking, pay attention to timely watering and fertilization to maintain high soil fertility levels. At the same time, in the fall, 1000-2500 kilograms of potato can be harvested. 2. The method of planting the main stem-tip reference vegetable is to select a plot or a greenhouse with higher fertility and water conditions, and planting in a flat crop. The suitable density is 1.5-2.0 thousand plants per acre. The management and picking methods are the same as above. 3. High-efficiency greenhouses use direct production of tubers, similar to the early stage of nursery, high yield, short picking interval, and can be produced and marketed throughout the year. About 1 meter wide, apply enough base fertilizer to remove 10-15 kilograms of potatoes per square meter (reducing the amount of potatoes used for seedlings by 1/3). Cover the potatoes with nutritious soil and water. The temperature of shoot tip growth ranges from 15-40°C. When picking, the lower part needs to keep 2-3 axillary buds to promote the growth of the lower jaw. Sweet potato tip vegetable is a new type of vegetable in the north, with less investment, quick effect, simple service, free production season, and significant income increase. However, because many people do not have the cultivation experience, it is necessary to apply more N and P fertilizers to promote the growth of stems and leaves than to produce potato chips. Sweet potato shoot tips are not resistant to storage and must be sold immediately after picking. In the development of planting, farmers should first try a small amount, and then expand production after achieving results.