High-yielding Cultivation Measures of Shallow Bran and Deep-water Bran
First, Shallow Boiler 1. Select good seedlings. Shallow swill should be selected as a suitable variety for shallow water cultivation, such as Hainan Island and Wulian No.2. It is best to have more than 3-4 or more pods. The seedlings are required to be thick and vigorous, no pests, and no damage. 2. 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. 3, rational close planting. The planting density of lotus root is closely related to ripening period and yield. It is suitable for dense planting and has the effect of early maturity and yield increase. The density of general early-maturing varieties is: row spacing is 2 meters and the distance between holes is 0.7 meters. Late-maturing varieties should be sparsely planted, with a density of 2-2.5 meters spacing and a 1-meter spacing. 4, 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 is used as base fertilizer per mu. Precocious pods generally cover 1500-2000 kg of manure per mu. The top dressing is divided into three parts, focusing on the early stage of scarring. 5. 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 growth phase should be shallow, preferably 4-7 cm, and the water layer in the vigorous growth period of stems and leaves should be deeper, preferably 12-15 cm. The water layer should be shallow during the crusting season, preferably 4-7 cm. 6, diligently turn shoots, timely weeding. In the vigorous growth period of lotus root stems and leaves, the whip grows rapidly. When the leaf leaves are about 1 meter away from the field side, in order to prevent the shoot tip from passing through the field ridge, the tip of the field plough is pulled to the field every 2-3 days. 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. 7, 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. Second, Sham Shui Po 1, select the fine varieties and species. Sham Shui Po should choose suitable varieties for deep-water cultivation. Such as the silk seedlings, the Beijing Tang pond silkworm and so on. Choose the excellent characteristics of this species, and then use the thicker or larger branches as seeds. The species must be fresh, stout, and intact, with at least 2 or more full-grown pods and complete budding. 2, choose the appropriate water surface. Sham Shui Po should select shallow lakes, rivers, flat waters, and stable fluctuations, and the thickness of the underwater silt layer should be 20 cm or more. The maximum water level in summer flood season does not exceed 120 cm. 3. Appropriate land preparation and reasonable 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 2500 kilograms of green manure, and base fertilizer should be ploughed into the soil. Deep-water fields are susceptible to phosphorus deficiency. It is advisable to apply 20-30 kg of calcium phosphate per mu to promote strong seedlings. 4, timely planting. Due to the deeper water level, the temperature of the soil has risen slowly and the planting period has been delayed by 10-15 days compared with the shallow water tank. 5, 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. 6, flood control 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, a few lines can be planted around Putian to prevent storms and reduce wind damage. 7, 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.