1. Quickly reduce the accumulation of water in the fields, and keep the water level of shallow water lotus root at 10-20 cm, and the water level of deep water lotus root at 30-50 cm. 2. Apply topdressing fertilizer once in the whole field, the application rate is 20 kg each of urea and potassium sulfate, or 40 kg of 45% compound fertilizer per mu. When fertilizing, it should be noted that in the deep-water lotus field, the fertilizer is easy to lose, and the chemical fertilizer and the river mud are fully mixed to form a fertilizer mud mass, and then applied to the lotus field. Avoid fertilizing at noon in the scorching sun, and let the field water be released before fertilizing on conditional fields, so that the fertilizer can be absorbed into the water, and then irrigate to the original depth. 3. Do a good job in pest control. After the rain, lotus root rot and navel black rot were seriously damaged in many places, causing the lotus leaf to scorch and die. Foliar sprays are not effective in preventing spoilage. At present, the diseased plants with serious disease in the field should be rooted out, and the local soil should be sterilized by applying carbendazim or hymexazol; when there are many diseased plants, one by one Take root to remove, and apply medicine to the entire field. During the specific operation, use 500 g of 50% carbendazim or 100-150 g of 99% hymexazol per mu of lotus root field, mix 25-30 kg of moistened fine soil, pile it up for 3 to 4 hours, and then make a medicinal dough and stuff it in the lotus root. In the pocket. After 3 days, use 70% thiophanate-methyl 800 times solution, or 50% carbendazim 600 times solution or 99% hymexazol 2500 times solution, and spray the leaf surface and petiole again every 6 days. The prevention and treatment of navel black rot can be achieved by foliar spraying with 50% carbendazim wettable powder 1000 times, 80% mancozeb wettable powder 800 times, and 250 g/L propiconazole EC 1000 times liquid spray. Chemical pesticides are easy to cause phytotoxicity to lotus leaves, so you must specify the concentration when using it, and do not increase it randomly. 4. Do a good job in the prevention and control of pests in the field. The most serious pests in lotus roots after the rain are duckweed, spirogyra and snails. Lotus leaves are more sensitive to herbicides, so use them with caution. Nitrogen fertilizers such as urea or ammonium bicarbonate can be sprinkled on duckweed to inhibit the growth of duckweed; copper sulfate solution can be poured on sunny days to prevent Spirogyra. The amount of copper sulfate depends on the depth of water. The amount per mu is 0.5 per 10 cm of water depth. The dosage of kilogram of copper sulfate is calculated once every 7 days, a total of 2 to 3 times; for the prevention and control of rice-eating golden flower insects and snails, use 20 kg of tea seed cake per acre, mash, soak for 24 hours, and pour the residue with juice splash. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for handling. phone Gelatin Size 1 Empty Capsule,Hpmc Empty Gelatin Capsules,Empty Capsules Size 1,Mixed Empty Pill Capsules Ningbo Jiangnan Capsule Co., Ltd. , https://www.jncapsule.com
Management measures for loss of lotus field after flood
The continuous heavy rain has also had a serious impact on the growth of aquatic vegetables-lotus roots (blooming lotus and lotus roots). The main manifestations are the general yellowing of lotus leaves in the whole field, the rot of seed lotus buds, and the obstruction of lotus tubers in the field. Spoilage disease and black umbilical rot are serious. The main measures for disaster relief and loss reduction in Outian are: