Where can I learn lotus root cultivation techniques? Detailed guidance requested
Can lotus root be propagated using the terminal bud as seed? How should it be done? Traditional lotus root cultivation habitually uses the lotus root body as seed, with the amount of lotus root used reaching as high as 400 kg per 667 sq m. If the terminal bud of the lotus root is cleverly used as seed, it not only saves a large amount of lotus root seed but is also simple and easy to do. 1. Seedling raising and land preparation. Choose fertile, deep dry land, and in early spring every 66...
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1. What are the differences in water level standards between deep-water lotus root and shallow-water lotus root, and how should they be adjusted in production?
According to the adaptability of lotus root to water level, it can be divided into two ecological types: shallow-water lotus root and deep-water lotus root. Shallow-water lotus root is suitable for a water level of 10-20 cm, with a maximum tolerable water depth of 30-50 cm. Deep-water lotus root is suitable for a water level of 30-50 cm, with a maximum tolerable water depth of 1-1.2 m.
The general principle of water layer management for shallow-water lotus root is: shallow at the front, deep in the middle, and shallow at the back. During the sprouting and growth period after planting lotus root until the standing leaves appear, shallow water should be maintained to increase soil temperature and promote germination. Generally, it is best to maintain a water layer of 4-7 cm deep. As the standing leaves appear, the stems and leaves of the lotus root gradually grow more vigorously, and the water layer should gradually rise to 12-15 cm. When the terminal leaf appears, it indicates that lotus root formation has begun, and the water layer should gradually be lowered to 4-7 cm to promote lotus root formation. The water level of deep-water lotus root is not easy to adjust, and the main thing is to prevent waterlogging during the flood season. In particular, after the standing leaves are submerged, emergency drainage should be carried out within 8 hours to bring the lotus leaves above the water surface to prevent them from drowning.
2. How can herbicides be reasonably used to remove weeds in lotus root ponds?
During the growth of lotus root, especially in the early growth stage of shallow-water lotus root, there are many weeds in the paddy field such as pondweed, needle spikerush, dwarf arrowhead, triangular bulrush, four-leaf clover fern, and black algae, and they grow quickly, affecting the growth of lotus root, so weeds should be removed in time. In the past, manual intertillage and weeding were often used, which required a large workload and easily trampled and damaged the underground stem buds of lotus root. If chemical weeding is used, it saves labor and effort and causes no harm to lotus root.
In recent years, through the research and experiments of scientific and technical personnel, some safe and effective methods for chemical weeding in lotus root fields have been explored and are being promoted in production.
(1) Choose 50% Weilosheng emulsifiable concentrate. When the standing leaves of lotus root grow 30 cm above the water surface, take 100 mL of the pesticide, first mix it with 5 kg of urea, then add 5 kg of fine soil, mix thoroughly, and broadcast it into the field when the dew has dried. When applying the pesticide, keep the water depth in the lotus root field at 7-10 cm. After application, maintain the water layer for more than one week. The effect is good, and the residual effect period can reach more than 1 month.
(2) Choose 12.5% gallant or 35% quizalofop-p-ethyl 40 mL, add 40-50 kg of water, mix thoroughly, and spray on the leaf surfaces of weeds when the dew is dry. After 4 days, the effect on killing grass-family weeds at the 3-4 leaf stage is significant.
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