Detailed Explanation of the Latest Field Management Methods for Water Shield
Water shield, also called lake vegetable, grows in aquatic environments. Water shield has no flavor, only a tender and smooth texture. It contains various minerals, vitamins and other nutrients, and also has medicinal value, so it is a precious vegetable. Because water shield lives in water, its later management is different from that of other vegetables. However, the main management aspects are largely the same, only the specific requirements differ. So now let's look at how to manage it specifically and what management techniques there are.
1. Fertilizer and Water Management
To improve the soil, you can use pond mud and humus soil to amend the soil, then apply 30 jin of urea per mu, mix in river sand and 100 jin of decomposed straw. After this, generally no additional fertilizer is needed. If you must apply additional fertilizer, just broadcast a few dozen jin of nitrogen fertilizer. It needs to be planted in water, and there must be no lack of moisture. It is best to maintain a 30 cm water layer, then gradually deepen it later, but it must not exceed one meter or be lower than 10 cm. In this way it can grow well; drought and loss of water will cause it to wither and die. Shallow water in spring, deep water in summer.
2. Temperature and Humidity
Water shield likes warmth and is not cold-tolerant. Below 15 degrees it will grow poorly, and it grows best within the range of 20 to 30 degrees. Above 354 degrees growth will be somewhat slower. It requires air humidity of about 80%. It must not be lower than 70%, or leaf growth will be poor. It requires cool air, and the water temperature should be above 14.
3. Light
It likes light. When there is sufficient light, it is beneficial to leaf growth, can accumulate nutrients and accelerate reproduction, but the high temperatures of midsummer will slow growth a little. Overall, it needs relatively strong light, and can also tolerate shade. It can also grow in a shaded environment, only it does not grow as well as under light.
4. Pest and Disease Control
The main pest is the root-eating leaf beetle, which mainly gnaws on leaves and petals. Use 90% crystalline trichlorfon at 800 times dilution for spraying, or 60% imidacloprid 500 solution for spraying control. There are also hazards from aquatic animals such as snails and slugs; use molluscicide mixed with soybean cake for poisoning. It is highly toxic but does not cause phytotoxicity. Or use niclosamide, 100 grams per mu is effective. The main disease is leaf rot. First, change the water frequently to keep the water clean and free of pathogens. Do not use farmyard manure for fertilizing, as it easily carries pathogens. After pruning diseased branches, spread lime for disinfection.
Water shield is mainly grown in aquatic environments, so water management is very important. You must maintain the right amount of water at the right time, and also make sure temperature and light meet the growth requirements of water shield. Then, during the growth process, just pay attention to pest and disease control. The above content is provided for understanding and reference. Thank you for reading and supporting.