Shallow water planting techniques
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Second, choose the right surface. Sham Shui Po should choose shallow lakes, rivers, flat water flow, stable fluctuations, and underwater silt layers up to 20 cm thick. The maximum water level in summer flood season does not exceed 120 cm.
Third, appropriate site preparation, Shizu base fertilizer. Before the planting of Sham Shui Po, if conditions permit, it should be ploughed with water. If the water level is deep, it is not convenient to cultivate, and a large shovel can be used to level the field properly. Apply 1500-2000 kilograms of manure per acre or 2,500 kilograms of green manure, base fertilizer should be ploughed into the soil. Deep-water fields are prone to phosphorus deficiency. It is best to apply 20-30 kg of calcium phosphate per mu to promote strong seedlings.
Fourth, timely planting. Due to the deeper water level, the soil temperature rose slowly and the planting period was delayed by 10-15 days compared to the shallow water sluice.
Fifth, solid top dressing. Deep-water fertilizers are easy to lose and liquid fertilizers are not suitable. When composting, the manure or grass should be buried in the mud. If fertilizer is used as top dressing, the chemical fertilizer and the river mud should be fully mixed to make a mud mass and put into the paddy field.
Sixth, flood prevention and wind waves. Sham Shui Po water level is not easy to adjust. In the flood season, if the vertical leaves are submerged, they should be drained within 8 hours to expose the lotus leaf to the surface to prevent drowning. Sham Shui Po is vulnerable to wind and waves, especially during typhoons at the end of the cropping season, which often causes serious production cuts. Therefore, it is possible to plant a few lines of white soil around Putian to prevent wind damage and reduce wind damage.
Seven, timely harvest. Sham Shui Po is mostly a late-maturing variety. It does not pick up tender pods. When all the yellow leaves are yellow, they can be dug up and listed.
Shallow water
First, choose good seedlings. Shallow swill should be selected as a suitable variety for shallow water cultivation, such as: Hainan Island, Wulian No. 2 and so on. It is best to have more than 3-4 sections of pods, with all the scorpions and crickets. The seedlings are required to be thick and vigorous, no pests, and no damage.
Second, choose a fertile clay loam field. The lotus root's product organs are formed in the subterranean soil. Therefore, paddy fields that grow shallow water can store moisture, are rich in organic matter, and have thick silt layers. The fertile clay loam is most suitable.
Third, rational dense planting. The planting density of lotus root is closely related to maturity and yield. It is suitable for dense planting and has the effect of early maturation and yield increase. The density of general early-maturing varieties is: row spacing is 2 meters and hole spacing is 07 meters. Late-maturing varieties should be sparsely planted, with a density of 2-25 meters and a distance of 1 meter.
Fourth, base fertilizer and top-dressing. The lotus root grows for a long period of time and requires more fertilizer. The general principle of applying shallow water to earthworms is equal weight between base fertilizer and top dressing. In general, 1500-2500 kg of livestock manure or manure per acre is used as a base fertilizer. Precocious pods usually cover 1500-2000 kg of manure per mu. The top dressing is divided into three parts, focusing on the early stage of scarring.
Fifth, scientifically regulate water levels. The general principle of the shallow water layer management is shallow, medium depth, and shallow. The water layer in the bud should be shallow, with a depth of 4-7 cm, and the water layer in the vigorous growth period of stems and leaves should be deeper, with 12-15 cm being better. During the scarring period, the water layer should be shallow, preferably 4-7 cm.
Sixth, diligently turning, timely weeding. In the vigorous growth period of lotus stems and leaves, the whip grows rapidly. When the leaves are about 1 meter away from the field side, in order to prevent the shoots from passing through the field, every two or three days, the tip of the field plough is pulled toward the field. The shoots are very tender, and the soil should be pulled out along with the shoots to prevent breakage and swaying. It is better to do it at noon when turning. In the early stage of shallow water bream growth, there are more weeds, which have a greater impact on the growth of lotus root. Weeding should be done in time, and weeding should be combined with manual weeding and chemical weeding.
Seven, timely harvest. After the end of the leaves of the lotus root, the leaves of the terminating leaves show a reddish color, and when the edges of the basal leaves begin to yellow, the pods have fully matured. At this point you can dig the market.
Article Source: China Rural Network
