Detailed Explanation of Key Techniques for Efficient Cultivation and Management of Water Spinach

Water spinach, also known as kangkong, water convolvulus, and so on, is one of the vegetables people like most in daily life. It gets the name “water spinach” because it bears white trumpet-shaped flowers and the center of its stem is hollow. Water spinach is grown in many parts of China. Let's take a look below at the key points for efficient cultivation and management techniques for water spinach.

1. When is water spinach generally planted?

Water spinach is usually planted from April to July each year. It likes ample sunlight, but it also adapts fairly well to dense planting. It is not strict about soil conditions, but because it likes fertilizer and water, soil that is relatively sticky and heavy and has strong water- and fertilizer-retention capacity is still best. Its leaf tips grow in large numbers and rapidly, so it needs a large amount of fertilizer and has strong fertilizer tolerance, with an especially large demand for nitrogen fertilizer.

2. Introduction to the key points of efficient cultivation and management techniques for water spinach

1. Variety selection

Generally speaking, there are two common varieties for everyone to choose from and refer to. One is the bamboo-leaf type. As the name suggests, its leaf shape is very similar to bamboo leaves. Its characteristic is heat and waterlogging tolerance, and it grows relatively fast in summer. The other variety is the willow-leaf type, with leaves shaped like willow leaves and a darker leaf color. When planted in the south in summer, it can generally be harvested in about twenty days.

2. Planting management

Water spinach has no particular requirements for soil and can be grown in ordinary soil. It is most suitable to choose soil with a somewhat higher terrain and a certain moisture content. In the early stage, loosen the soil in time to raise the surface temperature. But in summer, because the temperature is relatively high, water spinach grows very fast and its demand for water is also higher. Water it in time, and water it heavily. If the weather is relatively dry and the soil is relatively dry, the taste of the water spinach will be affected. After watering, fertilizer should also be applied. By autumn, weed in time, and also apply fertilizer, control pests, and so on.

3. Pest and disease control

The disease water spinach is most prone to when grown is white rust. To avoid the occurrence of this disease, the first method is to carry out crop rotation. Before planting, the seeds should be treated with pesticide seed dressing. When the disease occurs, the relevant pesticide should also be sprayed, generally once about every seven days.

Specific methods: To grow water spinach, you must choose healthy seeds and healthy land. Newly bought seeds generally need to be soaked in warm water at 50 degrees for 30 minutes, and only after the temperature drops can they be used for planting. There is also management: plant in a place with high terrain, good drainage, and good ventilation. The fertilizer supply should be sufficient, and some phosphorus and potassium fertilizer should also be applied appropriately. The water supply should also be sufficient. Once water spinach is found to have disease, pull it out in time. In the early stage of disease onset, spray pesticide in time, generally once every seven days, and three sprays can bring it under control.

4. Harvest and seed saving in time

When cultivating water spinach, everyone must remember to harvest it in time. Usually, when the water spinach grows to about twenty centimeters, it should be harvested. Generally, it can be harvested two to three times, leaving two nodes above the base of the stem.

After harvesting, the seeds can be saved. Generally in May, the seedlings kept for seed should be transplanted upside down in the field, generally at a spacing of about one meter, with two plants per hole. After transplanting upside down, there is no need to water or apply fertilizer anymore, but a trellis should be built. Guide the main stem onto the trellis, then guide the side branches onto the trellis. When saving seeds, pay attention to pests. It generally blooms in August, and the seeds mature in October.