(1) Overview of water spinach, also known as water spinach and water spinach. Water spinach is native to tropical and rainy areas in China, and is produced in various provinces and regions south of the Yangtze River Basin in China. It is cultivated in southern provinces of China, Africa and Southeast Asia. Ipomoea, an annual or perennial chronic herb. Plant height is 30 ~ 60 cm. Stems oblate or long and lucky, with long stalks. Cymes, axillary, funnel-shaped corolla, white flowers. Seeds nearly round and dark brown. (2) Water spinach planting technology 1, sowing in the southern region, it is more suitable to plant water spinach in the open field from late April to early May. When sowing water spinach, you should choose the new species of the year, the seeds should be full and fresh in color, and the germination rate should be above 98%. The seed coat of water spinach is thin and not hard, and it absorbs water quickly. It is enough for dry seeds to germinate. Before sowing, you need to prepare the soil for the border. Weeds should be removed from the land in advance before soil preparation. In order to prevent weeds from competing with water spinach seeds for nutrients. In order to prevent the occurrence of water spinach diseases and insect pests, we need to disinfect the soil. The disinfection method is to spread the seeds according to the standard of lime 100kg per 667m2. Spread evenly. After sowing, dig deep into the soil, and the depth of digging should be about 15-20cm. After digging deep into the soil, dry the soil. Sowing can be carried out after airing 1-2 days. In order to make the water spinach grow better in the future, we should also apply base fertilizer to the water spinach. So what kind of base fertilizer is good? Let's introduce it to farmers now. We should choose organic fertilizer as base fertilizer for fertilization. Try not to use chemical fertilizer for fertilization. We should apply fertilizer according to the standard of 4000kg organic fertilizer per 667m2. When applying fertilizer, we should pay attention to sowing evenly, otherwise it will have a bad influence on the growth of water spinach. After applying organic fertilizer, we should dig deep into the soil. If conditions permit, it is best to use a rotary tiller for rotary tillage. The depth should be about 10- 15cm. After applying the base fertilizer, leveling the soil and making the border, it should be made into a north-south flat border. The width of the border should be1.5m.. The ridge is 0.2m in height and 0.3m in width, in order to facilitate watering and other production management in the future. We can partition the border every 4-5m. Leveling the border surface, pay attention to the uneven surface, otherwise it is not conducive to the germination of water spinach seeds in the future. When it is finished, we can sow. We usually use the method of drilling to sow water spinach. This can save seeds to a great extent. Ditching shall be carried out according to the distance of row spacing 10- 15cm. The depth of the ditch is generally 3-4cm, which is the most suitable. If it is too deep, it is not conducive to the germination and excavation of water spinach seeds. After ditching is completed, water the ditch. It is better to water the ditch with a large amount of water, so as to ensure that the seeds can have enough water for good growth after planting. According to the distance of 10- 15cm, sow in the ditch. Generally speaking, it is more appropriate to sow 3-4 seeds in one position. In this way, it can ensure that the young seedlings have enough nutritional area and sunshine conditions for healthy growth. Sow evenly and try to avoid the phenomenon of seeds getting together. After sowing, fill the ditch with soil. In order to improve the germination rate of seeds, we should spread a plastic film on the water spinach field after filling the soil. So as to keep the temperature and humidify. When laying the film, the film should be covered relatively evenly. The periphery of the film needs to be compacted with heavy objects. Each partition can also be compacted with heavy objects. In order to avoid blowing the film when it is windy. In this way, the sowing work is completed, and we can quietly wait for the seeds to germinate. 2. Field management After sowing 10- 15 days, when the seedlings grow to 4-6cm, we can open the plastic film. If the film is not opened in time, it will affect the development of water spinach seedlings. Even caused the death of the seedlings. With the growth of water spinach seedlings. Other grasses will grow with them, and they will compete with water spinach for nutrients. Is not conducive to the growth of water spinach. Therefore, we should carry out intertillage weeding. All weeds on the border should be pulled out. When intertillating the border surface. Everyone should pay attention to intertillage so as not to hurt plants. Otherwise, it is not conducive to the growth of plants. In the future field management, we should always pay attention to the situation of weeds in the field, and remove them in time when we see them, so as to ensure the good growth of water spinach. Watch the dryness of the soil. If the soil is dry, it should be watered. When watering, the amount of water must be sufficient, and it should be watered thoroughly. Let the soil fully absorb water. In the daily management in the future, generally speaking, farmers' friends can water the soil as long as they see that it is dry. Water spinach is a crop that has been harvested many times, so in addition to applying sufficient base fertilizer, topdressing must be carried out to achieve high yield. When the seedlings of water spinach grow to 5- 10cm, the first topdressing can be carried out. When topdressing, topdressing should be carried out according to the standard of 500-700kg organic fertilizer per 667m2. When topdressing, the fertilizer should be diluted first, and then fertilized with water. Apply fertilizer evenly. Otherwise, if there is too much fertilizer in a certain place, the plants will be burned to death. Before harvesting, it is generally enough to apply fertilizer once. 3. The main diseases of water spinach are less, and the pests are mainly whitefly. It can be controlled by spraying chlorfenapyr 1000- 1500 times. It should be sprayed once when the water spinach grows to about 8- 10cm. In the future, it needs to be sprayed according to the seedling situation. Generally speaking, spraying 2-3 times is enough. Farmers' friends should pay special attention to the fact that it is forbidden to use these pesticides within 7- 10 days before harvesting. 4. Harvesting in time is the key to high yield and high quality of water spinach. Generally, water spinach can be harvested when it grows to about 25 ~ 35 cm. If it is not harvested in time, it will not only affect the taste of water spinach, but also reduce the yield. Water spinach is a vegetable harvested many times. Generally speaking, water spinach cultivated in the open field can be harvested until the middle and late August. When harvesting, all the parts above 4-5 cm above the ground should be harvested.